SIST EN 806-2:2005

Specification for installations inside buildings conveying water for human consumption - Part 2: Design

This document gives recommendations, and specifies requirements, on the design of potable water installations within buildings and for pipework outside buildings but within the premises (see EN 806-1) and applies to new installations, alterations and repairs.

Technische Regeln für Trinkwasser-Installationen - Teil 2: Planung

Dieses Dokument gibt Empfehlungen und beschreibt die Anforderungen an die Planung von Trinkwasser-Installationen innerhalb von Gebäuden und für Leitungsteile außerhalb von Gebäuden, aber innerhalb von Grundstücken (siehe EN 806-1) und ist anwendbar für Neuinstallationen, Umbau und Reparaturen.

Spécifications techniques relatives aux installations d'eau destinée a la consommation humaine a l'intérieur des bâtiments - Partie 2: Conception

La présente partie de la Norme européenne donne des recommandations et énonce les exigences concernant la conception des installations d'eau potable a l'intérieur des bâtiments, et dans certains cas, les canalisations a l'extérieur des bâtiments mais dans les limites de propriété (voir EN 806-1) ; et s'applique aux nouvelles installations, modifications et réparations.

Specifikacije za napeljave za pitno vodo v stavbah - 2. del: Načrtovanje

General Information

• Status: Published
• Publication Date: 30-Jun-2005
• ICS: 13.060.20 - Drinking water
• ICS: 91.140.60 - Water supply systems
• Technical Committee: IOVO - Water supply and waste water engineering
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Jul-2005
• Due Date: 01-Jul-2005
• Completion Date: 01-Jul-2005
• Directive: 89/106/EEC - Construction products
• Directive: 93/38/EEC - Procurement procedures of entities operating in the water, energy, transport and telecommunications sectors
• Mandate: M/BC/CEN/88/15 - Standardization request to CEN/CENELEC in the field of Water supply, drainage and sewerage
• Ref Project: EN 806-2:2005 - Specification for installations inside buildings conveying water for human consumption - Part 2: Design

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 806-2:2005
01-julij-2005
6SHFLILNDFLMH]DQDSHOMDYH]DSLWQRYRGRYVWDYEDKGHO1DþUWRYDQMH
Specification for installations inside buildings conveying water for human consumption -
Part 2: Design
Technische Regeln für Trinkwasser-Installationen - Teil 2: Planung
Spécifications techniques relatives aux installations d'eau destinée a la consommation
humaine a l'intérieur des bâtiments - Partie 2: Conception
Ta slovenski standard je istoveten z: EN 806-2:2005
ICS:
13.060.20 Pitna voda Drinking water
91.140.60 Sistemi za oskrbo z vodo Water supply systems
SIST EN 806-2:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 806-2:2005

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SIST EN 806-2:2005
EUROPEAN STANDARD
EN 806-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2005
ICS 91.140.60
English version
Specification for installations inside buildings conveying water
for human consumption - Part 2: Design
Spécifications techniques relatives aux installations pour Technische Regeln für Trinkwasser-Installationen - Teil 2:
l'eau destinée à la consommation humaine à l'intérieur des Planung
bâtiments - Partie 2: Conception
This European Standard was approved by CEN on 3 February 2005.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 806-2:2005: E
worldwide for CEN national Members.

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SIST EN 806-2:2005
EN 806-2:2005 (E)
Contents
Foreword.3
1 Scope .4
2 Normative references .4
3 General requirements.7
4 Private water supplies.9
5 Acceptable materials.10
6 Components.14
7 Pipework inside buildings .14
8 Cold potable water services .15
9 Hot water systems .17
10 Prevention of bursting .18
11 Guidelines for water meter installations .21
12 Water conditioning .22
13 Acoustics.23
14 Protection of systems against temperatures external to pipes, fittings and appliances.23
15 Boosting .25
16 Pressure reducing valves .30
17 Combined drinking water and fire fighting services.31
18 Prevention of corrosion damage.32
19 Additional requirements for vented cold and hot water systems .33
Annex A (informative)  List of acceptable materials (non-exhaustive).39
Annex B (informative)  Aspects for water conditioning .42
Bibliography .49


2

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SIST EN 806-2:2005
EN 806-2:2005 (E)
Foreword
This document (EN 806-2:2005) has been prepared by Technical Committee CEN/TC 164 “Water supply”, the
secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an identical text or
by endorsement, at the latest by September 2005, and conflicting national standards shall be withdrawn at the
latest by September 2005.
This document has been prepared under the direction of CEN/TC 164 and is intended for the use of engineers,
architects, surveyors, contractors, installers, water suppliers, consumers and regulatory inspections.
This standard has been written in the form of a practice specification. It is the second part of a European Standard
consisting of five parts as follows:
 Part 1: General
 Part 2: Design
 Part 3: Pipe sizing
 Part 4: Installation
 Part 5: Operation and maintenance
NOTE : Products intended for use in water supply systems must comply, when existing, with national regulations and testing
arrangements that ensure fitness for contact with drinking water. The Member states relevant regulators and the EC
Commission agreed on the principle of a future unique European Acceptance Scheme (EAS), which would provide a common
testing and approval arrangement at European level. If and when the EAS is adopted, European Product Standards will be
amended by the addition of an Annex Z/EAS under Mandate M136 which will contain formal references to the testing,
certification and product marking requirements of the EAS. Until EAS comes into force, the current national regulations remain
applicable.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark,
Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
3

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SIST EN 806-2:2005
EN 806-2:2005 (E)
1 Scope
This document gives recommendations, and specifies requirements, on the design of potable water installations
within buildings and for pipework outside buildings but within the premises (see EN 806-1) and applies to new
installations, alterations and repairs.
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.
EN 26, Gas-fired instantaneous water heaters for sanitary uses production, fitted with atmospheric burners
(Including Corrigendum 1998).
EN 89, Gas-fired storage water heaters for the production of domestic hot water.
EN 545, Ductile iron, pipes, fittings, accessories and their joints for water pipelines — Requirements and test
methods.
EN 625, Gas-fired central heating boilers — Specific requirements for the domestic hot water operation of
combination boilers of nominal heat input not exceeding 70 kW .
EN 805, Water supply — Requirements for external systems and components outside buildings.
EN 806-1:2000, Specifications for installations inside buildings conveying water for human consumption —
Part 1: General.
prEN 806-3, Specifications for installations inside buildings conveying water for human consumption — Part 3: Pipe
sizing.
EN 973, Chemicals used for treatment of water intended for human consumption – Sodium chloride for
regeneration of ion exchangers.
EN 1057, Copper and copper alloys – Seamless, round copper tubes for water and gas in sanitary and heating
applications.
EN 1254-1, Copper and copper alloys – Plumbing fittings – Part 1: Fittings with ends for capillary soldering or
capillary brazing to copper tubes.
EN 1254-2, Copper and copper alloys – Plumbing fittings – Part 2: Fittings with compression ends for use with
copper tubes.
EN 1254-3, Copper and copper alloys – Plumbing fittings – Part 3: Fittings with compression ends for use with
plastics pipes.
EN 1254-4, Copper and copper alloys - Plumbing fittings - Part 4: Fittings combining other end connections with
capillary or compression ends
EN 1254-5, Copper and copper alloys – Plumbing fittings – Part 5: Fittings with short ends for capillary brazing to
copper tubes.
prEN 1254-7, Copper and copper alloys - Plumbing fittings - Part 7: Fittings with press ends for metallic tubes
EN 1452-1, Plastics piping systems for water supply — Unplasticized poly(vinyl chloride) (PVC-U) —
Part 1: General.
EN 1452-2, Plastics piping systems for water supply — Unplasticized poly(vinyl chloride) (PVC-U) — Part 2: Pipes.
4

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SIST EN 806-2:2005
EN 806-2:2005 (E)
EN 1452-3, Plastics piping systems for water supply — Unplasticized poly(vinyl chloride) (PVC-U) —
Part 3 : Fittings.
EN 1452-5, Plastics piping systems for water supply — Unplasticized poly(vinyl chloride) (PVC-U) — Part 5:
Fitness for purpose of the system.
ENV 1452-7, Plastics piping systems for water supply — Unplasticized poly(vinyl chloride) (PVC-U) –
Part 7: Guidance for the assessment of conformity.
EN 1487, Building valves – Hydraulic safety groups –Tests and requirements.
EN 1488, Building valves – Expansion group – Tests and requirements.
EN 1489, Building valves – Pressure safety valves – Tests and requirements.
EN 1490, Building valves - Combined temperature and pressure relief valves - Tests and requirements.
EN 1491, Building valves – Expansion valve – Tests and requirements.
EN 1717, Protection against pollution of potable water in water installations and general requirements of devices to
prevent pollution by backflow.
EN 10226-1, Pipe threads where pressure tight joints are made on the threads - Part 1: Taper external threads and
parallel internal threads - Dimensions, tolerances and designation.
EN 10240, Internal and/or external protective coatings for steel tubes – Specification for hot dip galvanized
coatings applied in automatic plants.
EN 10242, Threaded pipe fitting in malleable cast iron.
EN 10255, Non-Alloy steel tubes suitable for welding and threading – Technical delivery conditions.
EN 10284, Malleable cast iron fittings with compression ends for polyethylene (PE) piping systems.
EN 12201-1, Plastics piping systems for water supply – Polyethylene (PE) – Part 1: General
EN 12201-2, Plastics piping systems for water supply – Polyethylene (PE) – Part 2: Pipes
EN 12201-3, Plastics piping systems for water supply – Polyethylene (PE) – Part 3: Fittings.
EN 12201-5, Plastics piping systems for water supply – Polyethylene (PE) – Part 5: Fitness for purpose of the
system.
CEN/TS 12201-7, Plastics piping systems for water supply – Polyethylene (PE) – Part 7: Guidance for the
assessment of conformity.
EN 12502-1, Protection of metallic materials against corrosion – Guidance on the assessment of corrosion
likelihood in water distribution and storage systems – Part 1: General.
EN 12502-2, Protection of metallic materials against corrosion – Guidance on the assessment of corrosion
likelihood in water distribution and storage systems – Part 2: Influencing factors for copper and copper alloys.
EN 12502-3, Protection of metallic materials against corrosion – Guidance on the assessment of corrosion
likelihood in water distribution and storage systems – Part 3: Influencing factors for hot dip galvanised ferrous
materials.
prEN 12502-4, Protection of metallic materials against corrosion – Guidance on the assessment of corrosion
likelihood in water distribution and storage conveying systems – Part 4: Influencing factors for stainless steels.
EN 12502-5, Protection of metallic materials against corrosion – Guidance on the assessment of corrosion
likelihood in water distribution and storage systems – Part 5: Influencing factors for cast iron, unalloyed and low
alloyed steels.
5

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SIST EN 806-2:2005
EN 806-2:2005 (E)
EN 12842, Ductile iron fittings for PVC-U or PE piping systems – Requirements and test methods.
EN 13443-1, Water conditioning equipment inside buildings - Mechanical filters - Part 1: Particle rating 80 µm to
150 µm - Requirements for performances, safety and testing.
EN 14095, Water conditioning equipment inside buildings - Electrolytic treatment systems with aluminium anodes -
Requirements for performance, safety and testing.
EN 14525, Ductile iron wide tolerance couplings and flange adaptors for use with pipes of different materials: dutile
iron, Grey iron, Steel, PVC-U PE, Fibre – cement.
prEN 14743, Water equipment inside buildings - Softeners - Requirements for performance, safety and testing.
EN 29453, Soft solder alloys; chemical compositions and forms (ISO 9453:1990).
EN 60335-2-21, Household and similar electrical appliances - Safety - Part 2-21: Particular requirements for
storage water heaters (IEC 60335-2-21:2002, modified).
EN 60335-2-35, Household and similar electrical appliances -Safety - Part 2-35: Particular requirements for
instantaneous water heaters (IEC 60335-2-35:2002).
EN 60534-8-4, Industrial-process control valves — Part 8 : Noise considerations — Section 4: Prediction of noise
generated by hydrodynamic flow (IEC 60534-8-4/1994).
EN 60730-1, Automatic electrical controls for household and similar use — Part 1: General requirements (IEC
60730-1:1999, modified).
EN 60730-2-8, Automatic electrical controls for household and similar use — Part 2-8: Particular requirements for
electrically operated water valves, including mechanical requirements (IEC 60730-2-8:2000, modified).
EN ISO 3822-1, Acoustics - Laboratory tests on noise emission from appliances and equipment used in water
supply installations - Part 1: Method of measurement (ISO 3822-1:1999).
EN ISO 3822-2, Acoustics - Laboratory tests on noise emission from appliances and equipment used in water
supply installations - Part 2: Mounting and operating conditions for draw-off taps and mixing valves (ISO 3822-
2:1995).
EN ISO 3822-3, Acoustics - Laboratory tests on noise emission from appliances and equipment used in water
supply installations - Part 3: Mounting and operating conditions for in-line valves and appliances (ISO 3822-
3:1997).
EN ISO 3822-4, Acoustics - Laboratory tests on noise emission from appliances and equipment used in water
supply installations - Part 4: Mounting and operating conditions for special appliances (ISO 3822-4:1997).
EN ISO 6509, Corrosion of metals and alloys - Determination of dezincification resistance of brass (ISO
6509:1981).
EN ISO 15874-1, Plastics piping systems for hot and cold water installations – Polypropylene (PP) – Part 1:
General (ISO 15874-1:2003).
EN ISO 15874-2, Plastics piping systems for hot and cold water installations – Polypropylene (PP) – Part 2: Pipes
(ISO 15874-2:2003).
EN ISO 15874-3, Plastics piping systems for hot and cold water installations – Polypropylene (PP) – Part 3:
Fittings (ISO 15874-3:2003).
EN ISO 15874-5, Plastics piping systems for hot and cold water installations – Polypropylene (PP) – Part 5:
Fitness for purpose of the system (ISO 15874-5:2003).
EN ISO/TS 15874-7, Plastics piping systems for hot and cold water installations– Polypropylene (PP) – Part 7:
Guidance for the assessment of conformity (ISO/TS 15874-7:2003).
6

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SIST EN 806-2:2005
EN 806-2:2005 (E)
EN ISO 15875-1, Plastics piping systems for hot and cold water installations – Crosslinked polyethylene (PE-X) –
Part 1: General (ISO 15875-1:2003).
EN ISO 15875-3, Plastics piping systems for hot and cold water installations – Crosslinked polyethylene (PE-X) –
Part 3: Fittings (ISO 15875-3:2003).
EN ISO 15875-5, Plastics piping systems for hot and cold water installations – Crosslinked polyethylene (PE-X) –
Part 5: Fitness for purpose of the system (ISO 15875-5:2003).
EN ISO/TS 15875-7, Plastics piping systems for hot and cold water installations– Crosslinked polyethylene (PE-X)
– Part 7: Guidance for the assessment of conformity (ISO/TS 15875-7:2003)
EN ISO 15876-1, Plastics piping systems for hot and cold water – Polybutylene (PB) – Part 1: General (ISO 15876-
1:2003).
EN ISO 15876-2, Plastics piping systems for hot and cold water installations – Polybutylene (PB) – Part 2: Pipes
(ISO 15876-2:2003).
EN ISO 15876-3, Plastics piping systems for hot and cold water installations – Polybutylene (PB) – Part 3: Fittings
(ISO 15876-3:2003).
EN ISO 15876-5, Plastics piping systems for hot and cold water installations – Polybutylene (PB) – Part 5: Fitness
for purpose of the system (ISO 15876-5:2003).
EN ISO/TS 15876-7, Plastics piping systems for hot and cold water installations – Polybutylene (PB) – Part 7:
Guidance for the assessment of conformity (ISO/TS 15876-7:2003).
EN ISO 15877-1, Plastics piping systems for hot and cold water installations – Chlorinated poly(vinyl chloride)
(PVC-C) – Part 1: General (ISO 15877-1:2003).
EN ISO 15877-2, Plastics piping systems for hot and cold water installations – Chlorinated poly(vinyl chloride)
(PVC-C) – Part 2: Pipes (ISO 15877-2:2003).
EN ISO 15877-3, Plastics piping systems for hot and cold water installations – Chlorinated poly(vinyl chloride)
(PVC-C) – Part 3: Fittings (ISO 15877-3:2003).
EN ISO 15877-5, Plastics piping systems for hot and cold water installations – Chlorinated poly(vinyl chloride)
(PVC-C) – Part 5: Fitness for purpose of the system (ISO 15877-5:2003).
EN ISO/TS 15877-7, Plastics piping systems for hot and cold water installations – Chlorinated poly(vinyl chloride)
(PVC-C) – Part 7: Guidance for the assessment of conformity (ISO/TS 15877-7:2003).
ISO 15875-2, Plastics piping systems for hot and cold water installations – Crosslinked polyethylene (PE-X) – Part
2: Pipes.
IEC 60064-5-54, Electrical installations of buildings - Part 5-54: Selection and erection of electrical equipment;
Earthing arrangements, protective conductors and protective bonding conductors
3 General requirements
3.1 Water supply
This document applies irrespective of the water being supplied by a statutory water supplier or from a private
supply. Attention is drawn to national or local regulations and requirements.
3.2 Basic concepts
3.2.1 General
For design and construction of a potable water installation two types of installation are considered:
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SIST EN 806-2:2005
EN 806-2:2005 (E)
 installation type A: Closed potable water installations, see EN 806-1:2000, 5. and Annex A, Figure 2.
 installation type B: Vented potable water installations, see EN 806-1:2000, 5.11 and Annex A, Figure 3.
Installation types A and B may be combined.
The potable water installation shall be designed to:
a) avoid waste, undue consumption, misuse and water contamination;
b) avoid excessive velocity, low flow rates and stagnant areas;
c) enable water supply to all individual water outlets, taking into consideration pressure, flow rate, water
temperature and use of building;
d) avoid the trapping of air during filling and the formation of air locks during operation of the installation;
e) not cause danger or inconvenience to persons and domestic animals nor endanger buildings or their contents;
f) avoid damage (e.g. scaling, corrosion and degradation ) and to prevent the water quality being affected by local
environment;
g) facilitate access and maintenance operations of appliances;
h) avoid cross-connections and
i) minimise the generation of noise.
3.2.2 Water and energy conservation
The designer shall consider the water usage and energy demands of an installation and seek to minimise these.
3.3 Underground pipework
All underground pipework covered by this standard shall conform with the requirements given in EN 805.
3.4 Materials, components and appliances
3.4.1 General
All materials, components and appliances used in the construction of potable water systems shall comply with
appropriate CEN product standards or European Technical Approval guidelines if applicable. Where these are not
available national standards or local regulations should be used.
The design and selection of materials shall take into consideration the service conditions and water quality.
Information and criteria about the reasonable choice of metal pipe material taking into account corrosion likelihood is
given in EN 12502-1 to –5.
3.4.2 Pressure and temperature
To ensure adequate strength, all components of the system shall be designed to meet the test pressure requirements
of the local and national laws and regulations. The test pressure shall be at least 1,5 times the allowable maximum
operating pressure (PMA).
All pipes and joints of a potable water installation shall be designed for a service life of 50 years taking into account
appropriate maintenance and specific operating conditions.
Unless otherwise specified in European Standards, the materials, components and appliances for hot drinking water
installations shall be capable of resisting water temperatures up to 95° under fault conditions.
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SIST EN 806-2:2005
EN 806-2:2005 (E)
The minimum operating conditions for calculation purposes for pipes and pipe fittings shall be as given in Table 1 and
Table 2.
Table 1 — Allowable maximum operating pressure classes
Allowable maximum operating pressure Pressure
(PMA) class
kPa
PMA  1,0 1000
PMA  0,6 600
PMA  0,25 250

Table 2 — Classification of service conditions for plastic pipe systems
Application Design Time T Time T Time at T Typical field of
max mal mal


class temperature, at T at T for fault for fault application
D max
T  condition condition
D

°C years °C years °C h
1 60 49 80 1 95 100 Hot water supply
(60 °C)
2 70 49 80 1 95 100 Hot water supply
(70 °C)

All systems which satisfy the conditions specified in Table 2 shall also be suitable for the conveyance of cold water
for a period of 50 years at a temperature of 20 °C and a design pressure of 10 bar.
If not required in national or local regulations the sum of operation pressure and surge pressure should not exceed
test pressure of the installation.
Surge pressures resulting from the operation of valves in fire extinguishing and fire protection systems which are
operated no more than once a month for test purposes and otherwise only in the event of a fire are excluded from this
requirement.
3.5 Water flow rates
Design flow rates from outlets are given in prEN 806-3.
3.6 Operating Temperature
30 s after fully opening a draw-off fitting, the water temperature should not exceed 25 °C for cold water draw off points
and should not be less than 60 °C for central hot water systems unless otherwise specified by local or national
regulations.
Hot water systems should have the facility to enable the temperature at the extremities of the system to be raised to
70 °C for disinfection purposes (see 9.1).
4 Private water supplies
Where a private water supply is to be used in addition to water supplied by a statutory water supplier, the supplier's
approval to the proposals shall be obtained before work commences. There shall be no cross connection of systems
carrying water from different water suppliers or of different sources from one supplier. See EN 1717.
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SIST EN 806-2:2005
EN 806-2:2005 (E)
5 Acceptable materials
5.1 Choice of material
The following factors shall be taken into account in selecting materials used in a water system:
a) effect on water quality;
b) vibrations, stresses or settlement;
c) internal water pressure;
d) internal and external temperatures;
e) internal and external corrosion;
f) compatibility of different materials;
g) ageing, fatigue, durability and other mechanical factors;
h) permeation.
Lead pipes and -fittings shall not be used.
A non-exhaustive list of acceptable materials is given in Annex A.
NOTE In the framework of the EU-Mandate M136 under the Construction Products Directive (CPD) and the Drinking Water
Directive (DWD) a system of European Standards (EN) and other regulation is in preparation to establish a European
Acceptance Scheme (EAS) for testing and certification of products in contact with water intended for human consumption.
5.2 Pipe joints
All joints used for potable water shall conform to the relevant standards.
Pipe joints shall be permanently water-tight under the alternating stresses occurring in operation.
Basically two different designs will be distinguished: pipe joints which can take up axial forces and such which need
a fixation to prevent disconnection. For the latter, suitable fixing points shall be provided to absorb hydraulic forces
acting on the joints.
5.3 Materials used in pipe joint assemblies
Only solders free from lead, antimony and cadmium shall be specified, unless permitted by national or local
regulations.
Other materials and systems can be used if they comply with the general requirements given in 3.4.1.
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SIST EN 806-2:2005
EN 806-2:2005 (E)
Table 3 — Material for pipes and fittings, metals
Material for pipes
Available jointing methods for Ductile iron Stainless steel Hot dip galvanized steel (HDGS) Copper
metallic piping systems
Material for fittings
Ductile iron Stainless steel and brass Hot dip galvanized malleable cast iron Copper and copper alloys
Capilliary solder fitting - - - X
soldering
d d c
Brazing -
X X X
Welding - d - c
X X

a - b X c
Threaded joint X X
Compression fittings - X X X
Crimped fittings - X - X
Sockets with elastomeric X - - -
sealing ring and spigot ends
Push fit fittings X X X X
Flanges X X X X
Demountable unions X X X X
Further commentaries
Pipes and fittings according to EN Pipes and fittings. Small copper Pipes in HDGS according to EN 10255 only medium or he- Pipes, fittings, pre-fabricated assemblies. Solders shall
545. Protective coatings and linings connections to large stainless steel avy series with hot dip galvanized coating according to EN be tin copper alloy (No 23,24) or tin silver (No 28,29) in
may be required. Sockets with spigot tanks should be avoided. Fluxes 10240 only coating quality A.1. Hot dip galvanized accordance with EN 29453. Pipes see EN 1057.
ends according to EN 545. containing chlorides, borides and malleable cast iron fittings according to EN 10242. Copper and copper alloy capillary fittings for soldering
other substances that can cause Galvanized malleable cast iron fittings are normally used and brazing, see EN 1254-1 and EN 1254-5. Copper
pitting of stainless steel shall not be for jointing. Site formed bends shall not be used to avoid alloy compression fittings, see EN 1254-2. For push fit
used - phosphoric acid based fluxes damage to galvanizing, hot dip galvanized bends according fittings see prEN 1254-7. For threaded ends see EN
shall be used. to EN 10242 shall be used instead 1254-4.
a
Thread according to EN 10226-1
b
Thread on transition fittings
c
See national regulations and standards

d
Corrosion risks have to be considered, see also
...