I.S. EN 13785:2005
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
REGULATORS WITH A CAPACITY OF UP TO AND INCLUDING 100 KG/H, HAVING A MAXIMUM NOMINAL OUTLET PRESSURE OF UP TO AND INCLUDING 4 BAR, OTHER THAN THOSE COVERED BY EN 12864 AND THEIR ASSOCIATED SAFETY DEVICES FOR BUTANE, PROPANE OR THEIR MIXTURES
Hardcopy , PDF
27-06-2013
English
01-01-2005
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Foreword
1 Scope
2 Normative references
3 Terms and definitions
3.1 General terms and definitions
3.2 Terms and definitions concerning gas
3.3 Terms and definitions concerning pressures
3.4 Terms and definitions concerning rates
4 Types of regulators
4.1 Introduction
4.2 Regulators for installations where the final regulator
supplies a pressure specified in EN 437
4.3 Other regulators
5 Constructional characteristics
5.1 General
5.2 Materials
5.3 Special requirements
5.4 Mechanical strength
5.5 Soundness
5.6 Mechanical endurance
5.7 Resistance to humidity changes
5.8 Resistance to corrosion
6 Performance characteristics
6.1 General
6.2 Supply pressure and regulated pressure according to 4.2
6.3 Variable regulators
6.4 Regulators out of the pressures of EN 437
7 Test methods
7.1 General conditions
7.2 Verification of constructional characteristics
7.3 Verification of performance characteristics
8 Marking, packaging, instructions
8.1 General
8.2 Marking of the regulator
8.3 Packaging
8.4 Instructions for installation, use and maintenance
Annex A (normative) Special requirements for regulators
fitted with pressure or rate operated safety devices
A.1 Regulators fitted with an over-pressure relief
A.2 Regulators fitted with an over-pressure shut off safety
valve
A.3 Regulators fitted with an under-pressure shut off
safety device
A.4 Regulators fitted with an excess flow valve
A.5 Regulators fitted with a regulated pressure limiter
Annex B (normative) Special requirements for regulators
fitted with a thermal cut out
B.1 Definition
B.2 Constructional characteristics
B.3 Performance characteristics
B.4 Test methods
Annex C (normative) Special requirements for low pressure
regulators under extreme temperature conditions
(temperatures below -20 degrees C)
Annex D (normative) Method for measuring leaks at test
pressures less than or equal to 16 bar
D.1 Scope
D.2 Diagram of the test bench
D.3 Coefficient K
D.4 Measurement of the leak
D.5 Checks
Annex E (normative) Complementary test requirements for
non metallic thermoplastic or thermal setting
materials used in the construction of regulators
E.1 Scope
E.2 Materials
E.3 Special conditions for carrying out the tests mentioned
in the body of the document
E.4 Special requirements
E.5 Sampling and order of tests
Annex F (normative) Requirements for elastomeric reinforced
diaphragms
Annex G (normative) Inlet connections
Annex H (normative) Outlet connections
Annex I (informative) Test method for resistance to corrosion
I.1 Principle
I.2 Reagents
I.3 Apparatus
I.4 Test method
I.5 Results
Annex ZA (informative) Relationship between this European
Standard and the Essential Requirements of EU
Directive 90/396/EEC
Bibliography
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