SNZ NZS 4522
Underground fire hydrants
|Publication Date:||14 December 2010|
This Standard specifies the dimensional, material, installation, and performance requirements for screw-down and gate valve underground fire hydrants used in New Zealand.
Screw-down hydrants shall be:
(a) In size DN 80;
(b) Suitable for an allowable operating pressure (AOP) of 1.6 MPa/1,600 kPa (16 bar); and
(c) Fitted with one threaded outlet. Gate valve hydrants shall be purpose designed to suit the duty they are required to perform.
This Standard excludes the specifications for road hydrant markings and operation of fire hydrants.
NOTE - Information on road hydrant markings is given in the NZTA Manual of traffic signs and markings.