This appraisal is for BETTA resilient seated PN 16 Hydrant and Air Valve Isolator Valves. The function of the isolator valves is to provide screw down isolation for outlet devices including a spring hydrant valve, air valve, threaded outlet or a yoke. Squat and tall versions are available.

This Issue 5 is to close out a Future Work Item that required a current AS/NZS 4020:2018 test to be completed.

The isolator valves are manufactured from polymeric coated ductile iron with a flanged inlet incorporating slotted holes to accommodate both DN 80 and DN 100 PN16 flange connections to AS/NZS 4087 Figure B5. The outlet is supplied with stud bolts compatible with either a DN 80 or DN 100 PN 16 Figure B5 flange connection to accommodate a spring hydrant valve, air valve or screwed outlet. There is also a version with a yoke cast in to the body.

 

Product categoryHydrant Isolator Valves
PA NumberPA 1817 Issue 5
Report holderBetta Fluid Control Co. Ltd
BrandBETTA
StandardNZS 4522:2010 Underground fire hydrants.
Publication date
Expiry date


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PA 1817 Issue 5-Betta- Hydrant and Air Valve Isolator Valves-Final.pdf PDF