SIST ISO 6182-3:2018
Fire protection -- Automatic sprinkler systems -- Part 3: Requirements and test methods for dry pipe valves
Fire protection -- Automatic sprinkler systems -- Part 3: Requirements and test methods for dry pipe valves
This part of ISO 6182 specifies performance, requirements, methods of test and marking requirements,
for dry pipe valves and manufacturer’s specified relevant trim used in dry pipe automatic fire
protection systems.
Performance and test requirements for other auxiliary components or attachments to dry pipe valves
are not covered by this part of ISO 6182. Quick opening devices, including accelerators, used with dry
pipe valves are covered in 6182-4.
Protection contre l'incendie -- Systèmes d'extinction automatiques du type sprinkler -- Partie 3: Exigences et méthodes d'essai des postes de contrôle sous air
Požarna zaščita - Avtomatski sprinklerski sistemi - 3. del: Zahteve in preskusne metode za suhe alarmne ventile
Ta del standarda ISO 6182 opredeljuje zahteve glede delovanja, preskusne metode in zahteve glede označevanja za suhe alarmne ventile ter s strani proizvajalca določeno relevantno dodatno opremo ventila (»trim«), ki se uporablja v suhih avtomatskih sistemih za požarno zaščito.
Ta del standarda ISO 6182 ne zajema zahtev glede delovanja in preskušanja za druge dodatne komponente ali priključke na suhe ventile. Naprave za hitro odpiranje, vključno s pospeševalniki, ki se uporabljajo s suhimi ventili, so obravnavane v standardu 6182-4.
General Information
Relations
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 6182-3
Third edition
2012-12-01
Fire protection — Automatic
sprinkler systems —
Part 3:
Requirements and test methods for
dry pipe valves
Protection contre l’incendie — Systèmes d’extinction automatiques du
type sprinkler —
Partie 3: Exigences et méthodes d’essai des postes de contrôle sous air
Reference number
ISO 6182-3:2012(E)
©
ISO 2012
---------------------- Page: 1 ----------------------
ISO 6182-3:2012(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2012
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any
means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the
address below or ISO’s member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 6182-3:2012(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 3
4.1 Nominal sizes . 3
4.2 Connections . 3
4.3 Rated working pressure . 4
4.4 Bodies and covers . 4
4.5 Strength (see 6.9) . 4
4.6 Access for maintenance . 5
4.7 Components . 5
4.8 Leakage (see 6.8) . 5
4.9 Non-metallic components (excluding gaskets, seals and other elastomeric parts) (see 6.4
& 6.5) . 6
4.10 Sealing assembly elements (see 6.3). 6
4.11 Clearances . 6
4.12 Hydraulic friction loss (see 6.7) . 8
4.13 Endurance (see 6.6) . 9
4.14 Operational performance (see 6.11) . 9
4.15 Drains . 9
4.16 Alarms (see 6.11) .10
4.17 Valve impairment .10
5 Production testing and quality control .10
6 Tests .10
6.1 Samples .10
6.2 Spring and diaphragm test (see 4.7) .10
6.3 Sealing element tests (see 4.10) .11
6.4 Warm water ageing test for non-metallic components (excluding gaskets and seals) (see
4.9) .11
6.5 Air ageing test for non-metallic components (excluding gaskets and seals)(see 4.9) .12
6.6 Endurance test (see 4.13) .12
6.7 Hydraulic friction loss test (see 4.12) .12
6.8 Valve leakage and deformation test (see 4.8) .12
6.9 Body strength test (see 4.5) .13
6.10 Operational test (see 4.14) .13
6.11 Anti-reseating test (see 4.7.7) .15
6.12 Quick release (see 4.7.8) .15
6.13 Salt mist corrosion test .16
7 Marking .16
8 Manufacturer’s installation instructions .17
Annex A (normative) Tolerances .18
Bibliography .19
© ISO 2012 – All rights reserved iii
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ISO 6182-3:2012(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International
Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies
casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 6182-3 was prepared by Technical Committee ISO/TC 21, Equipment for fire protection and fire
fighting, Subcommittee SC 5, Fixed firefighting systems using water.
This third edition cancels and replaces the second edition (ISO 6182-3:2005), which has been
technically revised.
ISO 6182 consists of the following parts, under the general title Fire protection — Automatic sprinkler systems:
— Part 1: Requirements and test methods for sprinklers
— Part 2: Requirements and test methods for wet alarm valves, retard chambers and water motor alarms
— Part 3: Requirements and test methods for dry pipe valves
— Part 4: Requirements and test methods for quick-opening devices
— Part 5: Requirements and test methods for deluge valves
— Part 6: Requirements and test methods for check valves
— Part 7: Requirements and test methods for early suppression fast response (ESFR) sprinklers
— Part 8: Requirements and test methods for pre-action dry alarm valves
— Part 9: Requirements and test methods for water mist nozzles
— Part 10: Requirements and test methods for domestic sprinklers
— Part 11: Requirements and test methods for pipe hangers
— Part 12: Requirements and test methods for grooved-end components for steel pipe systems
iv © ISO 2012 – All rights reserved
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ISO 6182-3:2012(E)
Introduction
This part of ISO 6182 is one of a number of International Standards prepared by ISO/TC 21 covering
components for automatic sprinkler systems, including the following:
a) Carbon dioxide systems (ISO 6183);
b) Explosion suppression systems (ISO 6184).
An International Standard covering foam systems is planned.
© ISO 2012 – All rights reserved v
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INTERNATIONAL STANDARD ISO 6182-3:2012(E)
Fire protection — Automatic sprinkler systems —
Part 3:
Requirements and test methods for dry pipe valves
1 Scope
This part of ISO 6182 specifies performance, requirements, methods of test and marking requirements,
for dry pipe valves and manufacturer’s specified relevant trim used in dry pipe automatic fire
protection systems.
Performance and test requirements for other auxiliary components or attachments to dry pipe valves
are not covered by this part of ISO 6182. Quick opening devices, including accelerators, used with dry
pipe valves are covered in 6182-4.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel — Part 1: Bolts, screws
and studs with specified property classes — Coarse thread and fine pitch thread
ISO 898-2, Mechanical properties of fasteners made of carbon steel and alloy steel — Part 2: Nuts with
specified property classes — Coarse thread and fine pitch thread
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
alarm device
mechanical or electrical device to sound an alarm upon operation of the valve
3.2
automatic drain
normally open device that automatically drains water from and vents the intermediate chamber of a
valve to the atmosphere when the valve is in the ready position, and limits water flow from the chamber
after the valve has tripped
3.3
clapper
type of sealing element
NOTE See also 3.18.
3.4
corrosion-resistant material
1)
metallic material of bronze, brass, Monel metal, austenitic stainless steel, or equivalent, or plastic
material conforming with the requirements of this part of ISO 6182
1) Monel is an example of a suitable product available commercially. This information is given for the convenience
of users of this part of ISO 6182 and does not constitute an endorsement by ISO of this product.
© ISO 2012 – All rights reserved 1
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ISO 6182-3:2012(E)
3.5
differential
ratio of service pressure to system air pressure (expressed as gauge pressures) at the trip point
NOTE See also 3.24.
3.6
differential-type valve
type of valve in which air pressure in the system acts directly and/or indirectly on the sealing assembly
to maintain it in the closed position
NOTE The air seat of the sealing assembly is of equal or larger diameter than the diameter of the water seat
of the sealing assembly, with the two separated by an intermediate chamber maintained at atmospheric pressure.
3.7
dry pipe system
automatic fire protection system in which the piping contains air or nitrogen under pressure, the release
of which allows water from a water supply to discharge through the system
3.8
dry pipe valve
valve that controls the flow of water into a dry pipe sprinkler system and incorporates provision for
actuation of an alarm under specified conditions
3.9
flow velocity
speed of water flow through a valve expressed as the equivalent water velocity through a pipe of the
same nominal size as the valve
3.10
intermediate chamber
that part of a valve which separates the air and/or water sealing assembly seating surfaces and is at
atmospheric pressure when the valve is in the ready condition
3.11
leak point
system air pressure for a specific service pressure at which water begins to flow from the intermediate
chamber, automatic drain valve or alarm connection
3.12
mechanical-type valve
type of valve in which the air pressure in the system acts on the sealing assembly and linking mechanism
to maintain it in the closed position
3.13
minimum opening pressure
minimum pressure when water begins to pass through the valve
3.14
priming water
water used to seal a sealing assembly and prevent cementation of working parts
3.15
rated working pressure
maximum service pressure at which a valve is intended to operate
3.16
ready (set) condition
state of a valve with the sealing assembly in the closed or set position with service and system
pressure applied
2 © ISO 2012 – All rights reserved
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ISO 6182-3:2012(E)
3.17
reinforced elastomeric element
element of clapper, clapper assembly or seat seals in a composite of an elastomeric compound with one
or more other components
3.18
sealing assembly
main movable sealing element (such as a clapper or diaphragm) of the valve which prevents the reverse
flow of water and which maintains air pressure in the system piping
3.19
sealing assembly seat ring
main fixed sealing element of a valve which prevents the reverse flow of water and which maintains air
pressure in the system piping
3.20
service pressure
static water pressure at the inlet to a valve when the valve is in the ready condition
3.21
system air pressure
static air pressure in the system piping when the valve is in the ready condition
3.22
system pressure
static water pressure at the main outlet of a valve when the valve is in the ready condition
3.23
trim
external equipment and pipework, excluding the main installation pipework, fitted to valve
installation assembly
3.24
trip point
point at which a valve operates, admitting water into the system, measured in terms of the system air
pressure at a given service pressure
3.25
water motor alarm
hydraulically driven device which provides a local audible alarm as a result of a flow through a valve
4 Requirements
4.1 Nominal sizes
The nominal size of a valve shall be the nominal diameter of the inlet and outlet connections, i.e. the
pipe size for which the connections are intended. Sizes shall be 40 mm, 50 mm, 65 mm, 80 mm, 100 mm,
125 mm, 150 mm, 200 mm, 250 mm or 300 mm. The diameter of the waterway through the sealing
assembly seat ring may be less than the nominal size.
4.2 Connections
4.2.1 All connections shall have been designed for use at the rated working pressure of the valve.
4.2.2 The dimensions of all connections shall conform with the applicable requirements of International
Standards. If International Standards are not applicable, national standards shall be permitted to be used.
4.2.3 An opening not smaller than 15 mm nominal diameter shall be provided for an alarm line connection.
© ISO 2012 – All rights reserved 3
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ISO 6182-3:2012(E)
4.2.4 If priming water is required to seal the downstream side of the sealing assembly, an external
means shall be provided to introduce the priming water.
4.2.5 Means shall be provided to prevent or drain water columning and to check the level of priming
water (if required).
4.2.6 Suitable means shall be provided to facilitate testing of alarms without tripping the valve.
4.2.7 For differential-type valves, suitable means shall be provided to vent water from the intermediate
chamber and to prevent a partial vacuum between the upstream and downstream sealing elements of the
sealing assembly.
4.3 Rated working pressure
4.3.1 The rated working pressure shall be not less than 1,2 MPa (12 bar).
4.3.2 Inlet and outlet connections shall be permitted to be machined for lower working pressures to
match installation equipment provided the valve is marked with the lower working pressure. See 7.3 f).
4.4 Bodies and covers
4.4.1 The body and cover shall be made of a material having corrosion resistance at least equivalent
to cast iron.
4.4.2 Cover fasteners shall be made of steel, stainless steel, titanium, or other materials with equivalent
physical and mechanical properties.
4.4.3 Non-metallic materials other than gaskets, diaphragms and seals or metals with a melting point
less than 800 °C shall not form part of the valve body or cover.
4.4.4 It shall not be possible to assemble the valve with the cover plate in a position which either
improperly indicates flow direction or prevents proper operation of the valve.
4.5 Strength (see 6.9)
4.5.1 An assembled valve, with the sealing assembly blocked open, shall withstand, without rupture, an
internal hydrostatic pressure of four times the rated working pressure for a period of 5 min, when tested
as specified in 6.9.
4.5.2 If the test in accordance with 6.9 is not done with standard production fasteners, the supplier
shall provide documentation showing that the calculated design load of any standard production fastener,
neglecting the force required to compress the gasket, does not exceed the minimum tensile strength
specified in ISO 898-1 and ISO 898-2, when the valve is pressurized to four times the rated working
pressure. The area of the application of pressure shall be calculated as follows.
a) If a full-face gasket is used, the area of application of pressure is that extending out to a line defined
by the inner edge of the bolts.
b) If an “O”-ring seal or ring gasket is used, the area of application of force is that extending out to the
center line of the “O”-ring or gasket.
4 © ISO 2012 – All rights reserved
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ISO 6182-3:2012(E)
4.6 Access for maintenance
Means shall be provided to permit access to working parts and removal of the sealing assembly. Any
method adopted shall permit ready maintenance by one person with a minimum of down time.
4.7 Components
4.7.1 Any component which may normally be disassembled during servicing shall be designed so that
it can not be reassembled improperly without providing an external visual indication, when the valve is
returned to service.
4.7.2 With the exception of valve seats, all parts intended for field replacement shall be capable of being
disassembled and reassembled using tools normally employed by the trade.
4.7.3 All components shall be non-detachable during normal operation of the valve.
4.7.4 Failure of the sealing assembly diaphragms or seals shall not prevent the valve from opening.
4.7.5 Sealing surfaces of sealing assemblies, including the sealing assembly seat ring, shall have
corrosion resistance equivalent to brass or bronze and have sufficient width of surface contact to
withstand ordinary wear and tear, rough usage, compression stresses and damage due to pipe scale or
foreign matter carried by the water.
4.7.6 Springs and diaphragms shall not fracture or rupture during 5 000 cycles of normal operation,
when tested in accordance with 6.2.
4.7.7 There shall be no sign, on visual examination, of damage to the sealing assembly after testing for
the operational requirements of 4.14 in accordance with 6.11 and 6.12.
4.7.8 When wide open, the sealing assembly shall bear against a definite stop. The opening of the valve
or the reaction of the water shall not permanently twist, bend or fracture valve parts.
4.7.9 Where rotation or sliding motion is required, the part or its bearing shall be made of a corrosion-
resistant material. Materials lacking corrosion resistance shall be fitted with bushings, inserts or other
parts made of corrosion-resistant materials at those points where freedom of movement is required.
4.7.10 A valve having a differential of the sealing assembly exceeding 1,16 to 1 for a service pressure
range of 0,14 MPa (1,4 bar) to rated working pressure shall be provided with an anti-seat latch that
prevents the valve from resetting automatically. The valve shall require manual means to return the valve
to the ready (set) condition. It shall not be possible to return the valve to the ready (set) condition before
draining the pipe work.
4.7.11 A valve having a differential of 1,16 to 1 or less over a service pressure range of 0,14 MPa (1,4 bar)
to rated working pressure shall be provided with means to prevent the valve from automatically returning
to the ready (set) condition and to permit draining of the pipework after the valve has tripped. Manual or
external means shall be provided to return the valve to the ready (set) condition.
4.8 Leakage (see 6.8)
4.8.1 There shall be no leakage, permanent distortion or rupture of a valve, when an internal pressure of
twice the rated working pressure is applied for 5 min with the sealing assembly open in accordance with 6.8.1.
4.8.2 No leakage shall be permitted across the sealing assembly into the intermediate chamber or into
the alarm port, when tested in accordance with 6.8.2. There shall be no leakage, permanent distortion or
© ISO 2012 – All rights reserved 5
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ISO 6182-3:2012(E)
rupture of a valve at an internal pressure of twice the rated working pressure applied to the upstream
side of the sealing assembly for 2 h with the downstream end pressurized in accordance with 6.8.2
4.8.3 Mechanical type valves shall show no signs of leakage, permanent distortion or structural failure
when subjected to an internal hydrostatic pressure of twice the rated working pressure applied for a
period of 2 h to the upstream end of the valve with the sealing assembly closed and the downstream end
vented in accordance with 6.8.3. Following this test, the valve shall operate in accordance with 4.14, when
tested once in accordance with 6.11.2 at a service pressure of 0,2 MPa (2 bar).
4.8.4 Valves fitted with a latch shall withstand, without leakage, permanent distortion or structural
failure, an internal hydrostatic pressure of twice the maximum air pressure specified by the manufacturer
for a period of 5 minutes applied to the downstream side of the valve with the sealing assembly closed
and the upstream end vented in accordance with 6.8.4. Following this test, the valve shall operate in
accordance with 4.14, when tested once in accordance with 6.11.2 at a service pressure of 0,2 MPa (2 bar).
4.8.5 Valves not fitted with a latch shall withstand, without leakage, permanent distortion or structural
failure, an internal hydrostatic pressure of twice the rated working pressure for a period of 5 min applied
to the downstream side of the valve with the sealing assembly closed and the upstream end vented in
accordance with 6.8.4. Following this test, the valve shall operate in accordance with 4.14 when tested
once in accordance with 6.11.2 at a service pressure of 0,2 MPa (2 bar).
4.9 Non-metallic components (excluding gaskets, seals and other elastomeric parts)
(see 6.4 & 6.5)
Non-metallic valve parts that may affect proper valve function as defined in this International Standard
shall be subjected to the applicable ageing of its non-metallic parts as described in 6.4 and 6.5 using
separate sets of samples, as applicable. After ageing, a valve shall meet the requirements of 4.8, 4.13 and
4.14, when tested in accordance with the applicable tests described in 6.6, 6.8 and 6.11.
4.10 Sealing assembly elements (see 6.3)
4.10.1 A seal made of elastomeric or other resilient materials shall not adhere to the mating surface
when tested in accordance with 6.3.1. Where the same design of seat is used for more than one size of
valve, it shall be permitted to only test the size with the highest stress on the seating surface.
4.10.2 Sealing surfaces shall prevent leakage of water into the alarm port, when the valve is tested in the
ready position in accordance with 6.11.
4.11 Clearances
The requirements in 4.11 are applicable to hinged, clapper-type valves only.
4.11.1 The radial clearance between a hinged sealing assembly and the inside walls in every position
except wide open shall not be less than 12 mm for cast iron bodies and shall not be less than 6 mm if the
body and sealing assembly are of cast iron or steel with corrosion protective coatings tested in accordance
with 6.14, non-ferrous material, stainless steel or materials having equivalent physical, mechanical and
corrosion-resistant properties. See Figure 1 a).
4.11.2 There shall be a diametrical clearance [see Figure 1b)] between the inner edges of the seat
ring and the metal parts of the sealing assembly when in the closed position (excluding any latching
mechanisms) as follows:
a) for compression snap-type sealing assemblies of corrosion-resistant materials, the diametrical
clearance shall be not less than 0,7 mm;
b) for other types of sealing assemblies, the diametrical clearance shall be not less than 3 mm.
6 © ISO 2012 – All rights reserved
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ISO 6182-3:2012(E)
4.11.3 Any space in which the sealing assembly can trap debris beyond the seat shall be not less than
3 mm deep.
4.11.4 The diametrical clearance between hinge pins and their bearings shall be not less than 0,125 mm.
4.11.5 The total axial clearance between the clapper hinge and adjacent valve body bearing surfaces
shall be not less than 0,25 mm. See Figure 1 c) or Figure 1 d).
4.11.6 Any reciprocating guide components, which are essential to allow a valve to open, shall have a
minimum diametrical clearance of not less than 0,7 mm in that portion over which the moving component
enters the fixed co
...
SLOVENSKI STANDARD
SIST ISO 6182-3:2018
01-september-2018
1DGRPHãþD
SIST ISO 6182-3:1995
3RåDUQD]DãþLWD$YWRPDWVNLVSULQNOHUVNLVLVWHPLGHO =DKWHYHLQSUHVNXVQH
PHWRGH]DVXKHDODUPQHYHQWLOH
Fire protection -- Automatic sprinkler systems -- Part 3: Requirements and test methods
for dry pipe valves
Protection contre l'incendie -- Systèmes d'extinction automatiques du type sprinkler --
Partie 3: Exigences et méthodes d'essai des postes de contrôle sous air
Ta slovenski standard je istoveten z: ISO 6182-3:2012
ICS:
13.220.20 3RåDUQD]DãþLWD Fire protection
SIST ISO 6182-3:2018 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST ISO 6182-3:2018
---------------------- Page: 2 ----------------------
SIST ISO 6182-3:2018
INTERNATIONAL ISO
STANDARD 6182-3
Third edition
2012-12-01
Fire protection — Automatic
sprinkler systems —
Part 3:
Requirements and test methods for
dry pipe valves
Protection contre l’incendie — Systèmes d’extinction automatiques du
type sprinkler —
Partie 3: Exigences et méthodes d’essai des postes de contrôle sous air
Reference number
ISO 6182-3:2012(E)
©
ISO 2012
---------------------- Page: 3 ----------------------
SIST ISO 6182-3:2018
ISO 6182-3:2012(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2012
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any
means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the
address below or ISO’s member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved
---------------------- Page: 4 ----------------------
SIST ISO 6182-3:2018
ISO 6182-3:2012(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 3
4.1 Nominal sizes . 3
4.2 Connections . 3
4.3 Rated working pressure . 4
4.4 Bodies and covers . 4
4.5 Strength (see 6.9) . 4
4.6 Access for maintenance . 5
4.7 Components . 5
4.8 Leakage (see 6.8) . 5
4.9 Non-metallic components (excluding gaskets, seals and other elastomeric parts) (see 6.4
& 6.5) . 6
4.10 Sealing assembly elements (see 6.3). 6
4.11 Clearances . 6
4.12 Hydraulic friction loss (see 6.7) . 8
4.13 Endurance (see 6.6) . 9
4.14 Operational performance (see 6.11) . 9
4.15 Drains . 9
4.16 Alarms (see 6.11) .10
4.17 Valve impairment .10
5 Production testing and quality control .10
6 Tests .10
6.1 Samples .10
6.2 Spring and diaphragm test (see 4.7) .10
6.3 Sealing element tests (see 4.10) .11
6.4 Warm water ageing test for non-metallic components (excluding gaskets and seals) (see
4.9) .11
6.5 Air ageing test for non-metallic components (excluding gaskets and seals)(see 4.9) .12
6.6 Endurance test (see 4.13) .12
6.7 Hydraulic friction loss test (see 4.12) .12
6.8 Valve leakage and deformation test (see 4.8) .12
6.9 Body strength test (see 4.5) .13
6.10 Operational test (see 4.14) .13
6.11 Anti-reseating test (see 4.7.7) .15
6.12 Quick release (see 4.7.8) .15
6.13 Salt mist corrosion test .16
7 Marking .16
8 Manufacturer’s installation instructions .17
Annex A (normative) Tolerances .18
Bibliography .19
© ISO 2012 – All rights reserved iii
---------------------- Page: 5 ----------------------
SIST ISO 6182-3:2018
ISO 6182-3:2012(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International
Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies
casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 6182-3 was prepared by Technical Committee ISO/TC 21, Equipment for fire protection and fire
fighting, Subcommittee SC 5, Fixed firefighting systems using water.
This third edition cancels and replaces the second edition (ISO 6182-3:2005), which has been
technically revised.
ISO 6182 consists of the following parts, under the general title Fire protection — Automatic sprinkler systems:
— Part 1: Requirements and test methods for sprinklers
— Part 2: Requirements and test methods for wet alarm valves, retard chambers and water motor alarms
— Part 3: Requirements and test methods for dry pipe valves
— Part 4: Requirements and test methods for quick-opening devices
— Part 5: Requirements and test methods for deluge valves
— Part 6: Requirements and test methods for check valves
— Part 7: Requirements and test methods for early suppression fast response (ESFR) sprinklers
— Part 8: Requirements and test methods for pre-action dry alarm valves
— Part 9: Requirements and test methods for water mist nozzles
— Part 10: Requirements and test methods for domestic sprinklers
— Part 11: Requirements and test methods for pipe hangers
— Part 12: Requirements and test methods for grooved-end components for steel pipe systems
iv © ISO 2012 – All rights reserved
---------------------- Page: 6 ----------------------
SIST ISO 6182-3:2018
ISO 6182-3:2012(E)
Introduction
This part of ISO 6182 is one of a number of International Standards prepared by ISO/TC 21 covering
components for automatic sprinkler systems, including the following:
a) Carbon dioxide systems (ISO 6183);
b) Explosion suppression systems (ISO 6184).
An International Standard covering foam systems is planned.
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SIST ISO 6182-3:2018
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SIST ISO 6182-3:2018
INTERNATIONAL STANDARD ISO 6182-3:2012(E)
Fire protection — Automatic sprinkler systems —
Part 3:
Requirements and test methods for dry pipe valves
1 Scope
This part of ISO 6182 specifies performance, requirements, methods of test and marking requirements,
for dry pipe valves and manufacturer’s specified relevant trim used in dry pipe automatic fire
protection systems.
Performance and test requirements for other auxiliary components or attachments to dry pipe valves
are not covered by this part of ISO 6182. Quick opening devices, including accelerators, used with dry
pipe valves are covered in 6182-4.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel — Part 1: Bolts, screws
and studs with specified property classes — Coarse thread and fine pitch thread
ISO 898-2, Mechanical properties of fasteners made of carbon steel and alloy steel — Part 2: Nuts with
specified property classes — Coarse thread and fine pitch thread
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
alarm device
mechanical or electrical device to sound an alarm upon operation of the valve
3.2
automatic drain
normally open device that automatically drains water from and vents the intermediate chamber of a
valve to the atmosphere when the valve is in the ready position, and limits water flow from the chamber
after the valve has tripped
3.3
clapper
type of sealing element
NOTE See also 3.18.
3.4
corrosion-resistant material
1)
metallic material of bronze, brass, Monel metal, austenitic stainless steel, or equivalent, or plastic
material conforming with the requirements of this part of ISO 6182
1) Monel is an example of a suitable product available commercially. This information is given for the convenience
of users of this part of ISO 6182 and does not constitute an endorsement by ISO of this product.
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3.5
differential
ratio of service pressure to system air pressure (expressed as gauge pressures) at the trip point
NOTE See also 3.24.
3.6
differential-type valve
type of valve in which air pressure in the system acts directly and/or indirectly on the sealing assembly
to maintain it in the closed position
NOTE The air seat of the sealing assembly is of equal or larger diameter than the diameter of the water seat
of the sealing assembly, with the two separated by an intermediate chamber maintained at atmospheric pressure.
3.7
dry pipe system
automatic fire protection system in which the piping contains air or nitrogen under pressure, the release
of which allows water from a water supply to discharge through the system
3.8
dry pipe valve
valve that controls the flow of water into a dry pipe sprinkler system and incorporates provision for
actuation of an alarm under specified conditions
3.9
flow velocity
speed of water flow through a valve expressed as the equivalent water velocity through a pipe of the
same nominal size as the valve
3.10
intermediate chamber
that part of a valve which separates the air and/or water sealing assembly seating surfaces and is at
atmospheric pressure when the valve is in the ready condition
3.11
leak point
system air pressure for a specific service pressure at which water begins to flow from the intermediate
chamber, automatic drain valve or alarm connection
3.12
mechanical-type valve
type of valve in which the air pressure in the system acts on the sealing assembly and linking mechanism
to maintain it in the closed position
3.13
minimum opening pressure
minimum pressure when water begins to pass through the valve
3.14
priming water
water used to seal a sealing assembly and prevent cementation of working parts
3.15
rated working pressure
maximum service pressure at which a valve is intended to operate
3.16
ready (set) condition
state of a valve with the sealing assembly in the closed or set position with service and system
pressure applied
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ISO 6182-3:2012(E)
3.17
reinforced elastomeric element
element of clapper, clapper assembly or seat seals in a composite of an elastomeric compound with one
or more other components
3.18
sealing assembly
main movable sealing element (such as a clapper or diaphragm) of the valve which prevents the reverse
flow of water and which maintains air pressure in the system piping
3.19
sealing assembly seat ring
main fixed sealing element of a valve which prevents the reverse flow of water and which maintains air
pressure in the system piping
3.20
service pressure
static water pressure at the inlet to a valve when the valve is in the ready condition
3.21
system air pressure
static air pressure in the system piping when the valve is in the ready condition
3.22
system pressure
static water pressure at the main outlet of a valve when the valve is in the ready condition
3.23
trim
external equipment and pipework, excluding the main installation pipework, fitted to valve
installation assembly
3.24
trip point
point at which a valve operates, admitting water into the system, measured in terms of the system air
pressure at a given service pressure
3.25
water motor alarm
hydraulically driven device which provides a local audible alarm as a result of a flow through a valve
4 Requirements
4.1 Nominal sizes
The nominal size of a valve shall be the nominal diameter of the inlet and outlet connections, i.e. the
pipe size for which the connections are intended. Sizes shall be 40 mm, 50 mm, 65 mm, 80 mm, 100 mm,
125 mm, 150 mm, 200 mm, 250 mm or 300 mm. The diameter of the waterway through the sealing
assembly seat ring may be less than the nominal size.
4.2 Connections
4.2.1 All connections shall have been designed for use at the rated working pressure of the valve.
4.2.2 The dimensions of all connections shall conform with the applicable requirements of International
Standards. If International Standards are not applicable, national standards shall be permitted to be used.
4.2.3 An opening not smaller than 15 mm nominal diameter shall be provided for an alarm line connection.
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4.2.4 If priming water is required to seal the downstream side of the sealing assembly, an external
means shall be provided to introduce the priming water.
4.2.5 Means shall be provided to prevent or drain water columning and to check the level of priming
water (if required).
4.2.6 Suitable means shall be provided to facilitate testing of alarms without tripping the valve.
4.2.7 For differential-type valves, suitable means shall be provided to vent water from the intermediate
chamber and to prevent a partial vacuum between the upstream and downstream sealing elements of the
sealing assembly.
4.3 Rated working pressure
4.3.1 The rated working pressure shall be not less than 1,2 MPa (12 bar).
4.3.2 Inlet and outlet connections shall be permitted to be machined for lower working pressures to
match installation equipment provided the valve is marked with the lower working pressure. See 7.3 f).
4.4 Bodies and covers
4.4.1 The body and cover shall be made of a material having corrosion resistance at least equivalent
to cast iron.
4.4.2 Cover fasteners shall be made of steel, stainless steel, titanium, or other materials with equivalent
physical and mechanical properties.
4.4.3 Non-metallic materials other than gaskets, diaphragms and seals or metals with a melting point
less than 800 °C shall not form part of the valve body or cover.
4.4.4 It shall not be possible to assemble the valve with the cover plate in a position which either
improperly indicates flow direction or prevents proper operation of the valve.
4.5 Strength (see 6.9)
4.5.1 An assembled valve, with the sealing assembly blocked open, shall withstand, without rupture, an
internal hydrostatic pressure of four times the rated working pressure for a period of 5 min, when tested
as specified in 6.9.
4.5.2 If the test in accordance with 6.9 is not done with standard production fasteners, the supplier
shall provide documentation showing that the calculated design load of any standard production fastener,
neglecting the force required to compress the gasket, does not exceed the minimum tensile strength
specified in ISO 898-1 and ISO 898-2, when the valve is pressurized to four times the rated working
pressure. The area of the application of pressure shall be calculated as follows.
a) If a full-face gasket is used, the area of application of pressure is that extending out to a line defined
by the inner edge of the bolts.
b) If an “O”-ring seal or ring gasket is used, the area of application of force is that extending out to the
center line of the “O”-ring or gasket.
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ISO 6182-3:2012(E)
4.6 Access for maintenance
Means shall be provided to permit access to working parts and removal of the sealing assembly. Any
method adopted shall permit ready maintenance by one person with a minimum of down time.
4.7 Components
4.7.1 Any component which may normally be disassembled during servicing shall be designed so that
it can not be reassembled improperly without providing an external visual indication, when the valve is
returned to service.
4.7.2 With the exception of valve seats, all parts intended for field replacement shall be capable of being
disassembled and reassembled using tools normally employed by the trade.
4.7.3 All components shall be non-detachable during normal operation of the valve.
4.7.4 Failure of the sealing assembly diaphragms or seals shall not prevent the valve from opening.
4.7.5 Sealing surfaces of sealing assemblies, including the sealing assembly seat ring, shall have
corrosion resistance equivalent to brass or bronze and have sufficient width of surface contact to
withstand ordinary wear and tear, rough usage, compression stresses and damage due to pipe scale or
foreign matter carried by the water.
4.7.6 Springs and diaphragms shall not fracture or rupture during 5 000 cycles of normal operation,
when tested in accordance with 6.2.
4.7.7 There shall be no sign, on visual examination, of damage to the sealing assembly after testing for
the operational requirements of 4.14 in accordance with 6.11 and 6.12.
4.7.8 When wide open, the sealing assembly shall bear against a definite stop. The opening of the valve
or the reaction of the water shall not permanently twist, bend or fracture valve parts.
4.7.9 Where rotation or sliding motion is required, the part or its bearing shall be made of a corrosion-
resistant material. Materials lacking corrosion resistance shall be fitted with bushings, inserts or other
parts made of corrosion-resistant materials at those points where freedom of movement is required.
4.7.10 A valve having a differential of the sealing assembly exceeding 1,16 to 1 for a service pressure
range of 0,14 MPa (1,4 bar) to rated working pressure shall be provided with an anti-seat latch that
prevents the valve from resetting automatically. The valve shall require manual means to return the valve
to the ready (set) condition. It shall not be possible to return the valve to the ready (set) condition before
draining the pipe work.
4.7.11 A valve having a differential of 1,16 to 1 or less over a service pressure range of 0,14 MPa (1,4 bar)
to rated working pressure shall be provided with means to prevent the valve from automatically returning
to the ready (set) condition and to permit draining of the pipework after the valve has tripped. Manual or
external means shall be provided to return the valve to the ready (set) condition.
4.8 Leakage (see 6.8)
4.8.1 There shall be no leakage, permanent distortion or rupture of a valve, when an internal pressure of
twice the rated working pressure is applied for 5 min with the sealing assembly open in accordance with 6.8.1.
4.8.2 No leakage shall be permitted across the sealing assembly into the intermediate chamber or into
the alarm port, when tested in accordance with 6.8.2. There shall be no leakage, permanent distortion or
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rupture of a valve at an internal pressure of twice the rated working pressure applied to the upstream
side of the sealing assembly for 2 h with the downstream end pressurized in accordance with 6.8.2
4.8.3 Mechanical type valves shall show no signs of leakage, permanent distortion or structural failure
when subjected to an internal hydrostatic pressure of twice the rated working pressure applied for a
period of 2 h to the upstream end of the valve with the sealing assembly closed and the downstream end
vented in accordance with 6.8.3. Following this test, the valve shall operate in accordance with 4.14, when
tested once in accordance with 6.11.2 at a service pressure of 0,2 MPa (2 bar).
4.8.4 Valves fitted with a latch shall withstand, without leakage, permanent distortion or structural
failure, an internal hydrostatic pressure of twice the maximum air pressure specified by the manufacturer
for a period of 5 minutes applied to the downstream side of the valve with the sealing assembly closed
and the upstream end vented in accordance with 6.8.4. Following this test, the valve shall operate in
accordance with 4.14, when tested once in accordance with 6.11.2 at a service pressure of 0,2 MPa (2 bar).
4.8.5 Valves not fitted with a latch shall withstand, without leakage, permanent distortion or structural
failure, an internal hydrostatic pressure of twice the rated working pressure for a period of 5 min applied
to the downstream side of the valve with the sealing assembly closed and the upstream end vented in
accordance with 6.8.4. Following this test, the valve shall operate in accordance with 4.14 when tested
once in accordance with 6.11.2 at a service pressure of 0,2 MPa (2 bar).
4.9 Non-metallic components (excluding gaskets, seals and other elastomeric parts)
(see 6.4 & 6.5)
Non-metallic valve parts that may affect proper valve function as defined in this International Standard
shall be subjected to the applicable ageing of its non-metallic parts as described in 6.4 and 6.5 using
separate sets of samples, as applicable. After ageing, a valve shall meet the requirements of 4.8, 4.13 and
4.14, when tested in accordance with the applicable tests described in 6.6, 6.8 and 6.11.
4.10 Sealing assembly elements (see 6.3)
4.10.1 A seal made of elastomeric or other resilient materials shall not adhere to the mating surface
when tested in accordance with 6.3.1. Where the same design of seat is used for more than one size of
valve, it shall be permitted to only test the size with the highest stress on the seating surface.
4.10.2 Sealing surfaces shall prevent leakage of water into the alarm port, when the valve is tested in the
ready position in accordance with 6.11.
4.11 Clearances
The requirements in 4.11 are applicable to hinged, clapper-type valves only.
4.11.1 The radial clearance between a hinged sealing assembly and the inside walls in every position
except wide open shall not be less than 12 mm for cast iron bodies and shall not be less than 6 mm if the
body and sealing assembly are of cast iron or steel with corrosion protective coatings tested in accordance
with 6.14, non-ferrous material, stainless steel or materials having equivalent physical, mechanical and
corrosion-resistant properties. See Figure 1 a).
4.11.2
...
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