ISO 9911:2006

Agricultural irrigation equipment — Manually operated small plastics valves

ISO 9911:2006 specifies the general requirements and test methods for manually operated small plastics valves intended for operation in agricultural irrigation systems. It is applicable to manually operated plastics valves of nominal sizes DN 8 (1/4") to DN 100 (4"). The valves are intended for installation in irrigation piping networks, using water at temperatures up to 60 °C. Nominal pressures of the valves are as designated by the manufacturer.

Matériel agricole d'irrigation — Petites vannes en matière plastique commandées manuellement

General Information

• Status: Withdrawn
• Publication Date: 07-Nov-2006
• ICS: 65.060.35 - Irrigation and drainage equipment
• Technical Committee: ISO/TC 23/SC 18 - Irrigation and drainage equipment and systems
• Drafting Committee: ISO/TC 23/SC 18 - Irrigation and drainage equipment and systems
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 11-Feb-2022

Relations

• Revised: ISO 24649:2022 - Agricultural irrigation equipment — Manually and hydraulically operated plastics valves
• Effective Date: 26-Nov-2021
• Revises: ISO 9911:1993 - Agricultural irrigation equipment — Manually operated small plastics valves
• Effective Date: 15-Apr-2008

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 9911
Second edition
2006-11-15
Agricultural irrigation equipment —
Manually operated small plastics valves
Matériel agricole d'irrigation — Petites vannes en matière plastique
commandées manuellement

Reference number
ISO 9911:2006(E)
©
ISO 2006

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ISO 9911:2006(E)
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ISO 9911:2006(E)
Contents Page
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Marking . 3
5 Sampling and acceptance requirements . 4
6 Technical characteristics . 4
7 Mechanical and functional tests . 6
Annex A (normative) Resistance of valve and valve material to hydrostatic pressure . 10
Bibliography . 12
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ISO 9911:2006(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 9911 was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and
forestry, Subcommittee SC 18, Irrigation and drainage equipment and systems.
This second edition cancels and replaces the first edition (ISO 9911:1993), which has been technically revised.
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INTERNATIONAL STANDARD ISO 9911:2006(E)
Agricultural irrigation equipment — Manually operated small
plastics valves
1Scope
This International Standard specifies the general requirements and test methods for manually operated small
plastics valves intended for operation in agricultural irrigation systems. It is applicable to manually operated
plastics valves of nominal sizes DN 8 (1/4") to DN 100 (4").
◦
60 C
The valves are intended for installation in irrigation piping networks, using water at temperatures up to .
Nominal pressures of the valves are as designated by the manufacturer.
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 7-1, Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions, tolerances
and designation
ISO 48:1994, Rubber, vulcanized or thermoplastic — Determination of hardness (hardness between 10 IRHD
and 100 IRHD)
ISO 188:1998, Rubber, vulcanized or thermoplastic — Accelerated ageing and heat resistance tests
ISO 815, Rubber, vulcanized or thermoplastic — Determination of compression set at ambient, elevated or low
temperatures
ISO1167(all parts), Thermoplastics pipes, fittings and assemblies for the conveyance of fluids—
Determination of the resistance to internal pressure
ISO 2859-1:1999, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by
acceptance quality limit (AQL) for lot-by-lot inspection
ISO 5752, Metal valves for use in flanged pipe systems — Face-to-face and centre-to-face dimensions
ISO 7349, Thermoplastics valves — Connection references
ISO 7508, Unplasticized polyvinyl chloride (PVC-U) valves for pipes under pressure — Basic dimensions —
Metric series
ISO 8233, Thermoplastics valves — Torque — Test method
ISO 8242, Polypropylene (PP) valves for pipes under pressure — Basic dimensions — Metric series
ISO 8659, Thermoplastics valves — Fatigue strength — Test method
ISO 9393-1, Thermoplastics valves for industrial applications — Pressure test methods and requirements —
Part 1: General
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ISO 9911:2006(E)
ISO 9625, Mechanical joint fittings for use with polyethylene pressure pipes for irrigation purposes
ISO 9644, Agricultural irrigation equipment — Pressure losses in irrigation valves — Test method
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
body
main component of the valve which provides the fluid flow passageways and the body ends
3.2
seat
part of the valve which provides the obturator seating surface
NOTE It can be either integral or a separate component.
3.3
dividing wall
integral part of the valve body which separates the inlet and outlet ports of a valve, and on which the valve seat
is formed
3.4
nominal pressure
PN
alphanumeric designation for reference purposes related to the mechanical strength of a valve
◦
NOTE It usually corresponds to the service pressure in bar, with water at 20 C, for which the valve is designed
5 2
(;1 bar = 0,1 MPa = 10 Pa )1MPa = 1 N/mm.
3.5
nominal size
numerical designation used to refer to the size of a valve which is identical to the diameter of the pipe or pipes
to which the valve is intended to be connected directly
NOTE A single number designation is adequate if the inlet and outlet ports are the same size.
3.6
angle valve
valve with a generally cylindrical body in which the body ends are in planes perpendicular to each other and
having a stem the axis of which is co-linear with the axis of one body end
3.7
ball valve
valve in which a ball can be turned to move its port, or ports, relative to the ports in the valve body, to control the
flow of water
3.8
diaphragm valve
valve in which a flexible diaphragm constitutes the closing and regulating mechanism to control the flow of fluid
through the valve
3.9
globe valve
valve with a generally cylindrical body in which the axes of the body ends are co-linear and in which the axis of
the stem is perpendicular to the axes of the body ends
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ISO 9911:2006(E)
3.10
oblique valve
Y-globe valve
valve in which the axes of the body ends are co-linear and in which the axis of the stem is oblique to the axes of
the body ends
3.11
closing disc
part of an obturator of any shape on which the disc face is formed and to which the disc facing ring, if used, is
secured
3.12
obturator
moving member in a valve that operates to close the valve and, where applicable, contains a washer or similar
sealing device
3.13
disc face
smooth face of the obturator in a valve which makes contact with the valve seat when the valve is closed
3.14
disc facing ring
ring, of material different from the closing disc, secured to the disc and used to ensure water-tightness when a
valve is closed
3.15
stem
shaft
component of an obturator by which the actuating thread is formed and by which control of the closing
component is effected
3.16
closing torque
torque exerted over the closing operation to achieve full tightness of the valve at nominal pressure
3.17
opening torque
torque exerted initially to open the valve from fully closed or over the full opening operation at nominal pressure
3.18
shell test
test intended to check the design strength of a valve body, under internal hydrostatic pressure
4Marking
Each manually operated plastics valve that meets the requirements of this International Standard shall bear a
readily visible, clear and durable marking, which shall give the particulars listed under a), b) and e) below.
Particulars listed under c) and d) may be given on an attached label or on the packaging.
a) Name of manufacturer or registered trademark.
b) Nominal size of inlet and outlet ports: for direct slip-on type connections to plastics pipe, the outside nominal
diameter of the connecting pipe shall be given in millimetres; for threaded connections, the nominal thread
size shall be given in accordance with ISO 7-1.
c) Nominal pressure, in hundreds of kilopascals.
d) Type of valve material: PE, PVC, PP, NP, etc.
e) Direction of flow, if required, which should be shown on the valve body.
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ISO 9911:2006(E)
5 Sampling and acceptance requirements
5.1 Type-tests
Ensure that the test laboratory representative takes the sample of test specimens at random from a total of at
least 100 valves. Ensure that the number of test specimens used for each test is in accordance with Table 1.
Table 1 — Required number of test specimens and acceptance number
Number of test
Clause Test Acceptance number
specimens
6 Technical characteristics 2 0
7.2.1 Closing torque 3 1
7.2.2 Resistance to increased torque 3 0
7.3 Pressure loss 2 0
Resistance of valve and valve material to internal hydrostatic
7.4 40
pressure
7.5 Seat and stem sealing test 5 1
7.6 Valve performance at increased hydraulic pressure 2 0
7.7 Endurance testing 2 0
A.1 Moulded plastics material of valve body — Pressure test 2 0
A.2 Shell test 3 0
If the number of defective specimens in the sample is equal to or less than the acceptance number given in
Table 1, the lot shall be considered acceptable. If the number of defective specimens found in the test is greater
than the acceptance number, the lot shall be rejected.
All parts of the valve shall be of good workmanship, whole and smooth, and shall contain no holes.
5.2 Acceptance tests
When acceptance of manufacturing lots or of shipments of valves is required, conduct the sampling in
accordance with ISO 2859-1:1999, based on AQL 2,5 and special inspection level S-4.
Test all specimens in the sample, selected at random in accordance with ISO 2859-1:1999, Table II-A, for 1h,
as specified in 7.5.
The shipment or the lot complies with this International Standard if the number of defective specimens found in
the test does not exceed the acceptance number according to ISO 2859-1.
For the other tests, the number of test specimens shall be selected at random from the sample in acc
...