BS ISO 13693-2:2015
Current
The latest, up-to-date edition.
Irrigation equipment. Safety devices for chemigation Chemigation valve assemblies from DN 75 (3”) to DN 350 (14”)
Hardcopy , PDF
English
28-02-2015
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Design considerations
5 Performance requirements
6 Conformity assessment
7 Marking, technical documents, and packaging
Bibliography
Defines the construction and performance requirement and test methods for metal-bodied chemigation valves with water at temperatures not exceeding 50 degrees C, which might contain fertilizers and chemicals of the types and concentration used in agriculture.
| Committee |
W/-
|
| DevelopmentNote |
Supersedes 13/30271153 DC. (02/2015)
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| DocumentType |
Standard
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| Pages |
20
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| PublisherName |
British Standards Institution
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| Status |
Current
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| Supersedes |
This part of ISO13693 specifies the construction and performance requirement and test methods for metal-bodied chemigation valves with water at temperatures not exceeding 50°C, which might contain fertilizers and chemicals of the types and concentration used in agriculture.
The valve is designed to prohibit backflow caused by either back pressure or back siphonage. It is not designed for use in potable water systems. It is not to be confused with other forms of backflow prevention devices including pressure vacuum breakers, double check valves, reduced pressure zone valves, or goose neck loops. This part of ISO13693 specifies the minimum design, construction, and performance testing requirements for the chemigation valve assembly. The assembly consists of the following components:
a valve body into which a spring-loaded check valve is mounted with a resilient disk cover on the sealing surface;
a combination air release/vacuum relief valve located upstream of the check valve;
a low pressure drain valve located upstream of the check valve;
an inspection port located so as to permit visual and manual inspection of the valve working components.
| Standards | Relationship |
| ISO 13693-2:2015 | Identical |
| ISO 9635-1:2014 | Agricultural irrigation equipment Irrigation valves Part 1: General requirements |
| ISO 7-1:1994 | Pipe threads where pressure-tight joints are made on the threads Part 1: Dimensions, tolerances and designation |
| ISO 7005-1:2011 | Pipe flanges — Part 1: Steel flanges for industrial and general service piping systems |
| EN 1267:2012 | Industrial valves - Test of flow resistance using water as test fluid |
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