Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Safety requirements
  4.1 General requirements
       4.1.1 Materials
       4.1.2 Construction requirements
       4.1.3 Pressure strength
       4.1.4 Temperature range
       4.1.5 Pipeline connections
       4.1.6 Flow resistance
       4.1.7 Function
       4.1.8 Fitness for use
       4.1.9 External leak-tightness
       4.1.10 Internal leak-tightness
       4.1.11 Corrosion resistance
       4.1.12 Fireproof part
       4.1.13 Flood proof part
       4.1.14 Vacuum test
  4.2 Part related requirements
       4.2.1 Isolating valve
       4.2.2 Quick-acting valve
       4.2.3 Switch-over valve
       4.2.4 Forced switch-over valve
       4.2.5 Check valve
       4.2.6 Pressure compensating device
       4.2.7 Discharge valve
       4.2.8 Pressure reducer
       4.2.9 Filter
       4.2.10 Meter
       4.2.11 De-aerator
       4.2.12 Anti-siphon safety device
       4.2.13 Insulating device
       4.2.14 Pressure gauge
       4.2.15 Vapour/air separator
       4.2.16 Pressure control path
       4.2.17 Pressure retaining valve
       4.2.18 Combined part
       4.2.19 Other part
5 Test
  5.1 Testing the fitness for use of the parts
       5.1.1 General
       5.1.2 Testing the fitness for use of manually operated
              parts
       5.1.3 Testing the fitness for use of check valves
       5.1.4 Testing the fitness for use of pressure compensating
              devices
       5.1.5 Testing the fitness for use of discharge valves
       5.1.6 Testing the fitness for use of pressure reducers
       5.1.7 Testing the fitness for use of de-aerators
       5.1.8 Testing the fitness for use of mechanical anti-siphon
              safety devices
       5.1.9 Testing the fitness for use of pressure retaining valve
  5.2 Testing of the pressure compensating device
  5.3 Testing of the discharge valve
       5.3.1 Type testing
       5.3.2 Factory production control
  5.4 Testing of the pressure reducer
       5.4.1 Pressure strength test
       5.4.2 External leak-tightness test
       5.4.3 Internal leak-tightness test
       5.4.4 Functional test of the pressure reducer
  5.5 Type testing of the filter
       5.5.1 Testing of the differential pressure
       5.5.2 Testing on the side of the return pipeline of a
              filter for two-pipe systems
       5.5.3 Testing of the manual venting of the return pipeline
       5.5.4 Testing of the flow resistance
  5.6 Type testing of the de-aerator
  5.7 Testing of the mechanical anti-siphon safety device
       5.7.1 Testing of the anti-siphon function
       5.7.2 Pressure strength test
       5.7.3 External leak-tightness test
       5.7.4 Flow resistance test
       5.7.5 Testing of the pressure relief of mechanical
              anti-siphon safety devices
       5.7.6 Internal leak-tightness test
  5.8 Testing of the pressure relief of electro-mechanical
       anti-siphon safety devices
  5.9 Testing of insulating devices
  5.10 Testing of pressure retaining valve
       5.10.1 Type testing
       5.10.2 Factory production control
  5.11 Evaluation of conformity
6 Marking, packaging, and instructions
  6.1 General
  6.2 Marking
  6.3 Instruction for installation, maintenance, and operation
Bibliography