DIN 3266-1:1986-07

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

Applies to the design of pipe interrupters, pipe disconnectors, and anti-vacuum valves for fittings mounted in drinking water installations as specified in DIN 1988 Parts 1 to 6 (at present at the stage of draft) for use in both cold and hot water systems. Anti-vacuum valves in composite fittings are also subject to the specification of the present standard.