1 Field of application
2 Concepts
2.1 Set pressure
2.2 Intake pressure
2.3 Opening pressure
2.4 Closing pressure
2.5 Air entry clearance
3 Types, mating dimensions, designation
3.1 Pipe interrupters
3.2 Pipe disconnectors (Type A3)
3.3 Anti-vacuum valves
3.4 Special designs (Type F)
3.5 Designation
3.6 Screwed end connections
4 Nominal size
5 Materials
5.1 Physiological safety
5.2 Pressure-bearing components
5.3 Seals
6 General requirements
7 Set pressure, opening pressure, closing pressure,
intake pressure
7.1 Set pressure
7.2 Opening and closing pressures
7.3 Intake pressure
7.4 Limit values for dripping water
8 Tightness and strength
9 Noise
10 Marking
11 Test marks
Standards and other documents referred to
Other relevant standards
Previous editions
Amendments