Americas debt | Feedback | Sitemap
Wilkins 720a pressure vacuum breaker
PVB backflow preventer A - 1" is used in high hazard applications and is used primarily in non-potable residential and commercial irrigation systems. The A designation in the model number refers to a design change in the air inlet parts. This pressure vacuum breaker has corrosion-resistant internal parts and all bronze bonnet and body construction provides added strength and protection against light freezes, while the test cocks on center line of valve allow for installation versatility. There is no spring on the air inlet. Before the test cocks used were a specially designed needle valve that required turning of the test cock to operate. The vacuum breaker includes an approved check valve, vacuum relief, two test cocks, and inlet and outlet full port resilient seated shut-off valves.