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  • 35 / 35XL

    35 / 35XL

    Ideal for use where Lead-Free* valves are required. Designed for installation on potable water lines to protect against backsiphonage of contaminated water into the potable water supply. Assembly shall provide protection where a potential health hazard exists.
  • 420 / 420XL

    420 / 420XL

    The Wilkins 420 PVB is a pressure vacuum breaker assembly. Production of the Wilkins 420 pressure vacuum breaker began in 1998. The body of the Wilkins 420 PVB is bronze. The test cocks are mounted on the ball valves. The air inlet float utilizes a rubber fold not a spring to generate the air inlet loading. The float of the Wilkins 420 pressure vacuum breaker also has a relief valve to protect against damage from freezing. The check of the Wilkins 420 pvb is a modular design with a contained spring and replaceable check seat.
  • 460 / 460XL

    460 / 460XL

    Ideal for use where Lead-Free* valves are required. Designed for installation on indoor and outdoor point of use applications to protect against backsiphonage of contaminated water into the water supply. During start-up and operation a separate diaphragm seals the air inlet from the water supply preventing spillage. The assembly is designed for use under constant pressure and provides protection where a potential health hazard exists.
  • 720A

    720A

    The Wilkins 720A is a pressure vacuum breaker assembly. Production of the 720A pressure vacuum breaker assembly began approximately in 1975 by SMR . Around 1978 it was sold to the Neptune Meter Co. In 1984 Wilkins regulator bought the rights to produce this assembly. The Wilkins 720A assembly is bronze. The check spring is contained when the bonnet is removed. The check seat is cast in the body and is not replaceable. The A designation in the model number refers to a design change in the air inlet parts. The air inlet utilizes a rubber fold to exert the pressure for the air inlet loading. There is no spring on the air inlet. Before 1994 the test cocks used were a specially designed needle valves that required rotation of the test cock to operate. In 1994 a standard ball valve type test cock was utilized.