WSC - Water Specialties Company

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The 1 1/4" Wilkins model 720 & 720A pressure vacuum breaker began production in 1975 under the SMR name. It was sold to Neptune Meter Company in 1978. Wilkins bought the rights to the device in 1984. It is a bronze bodied, fully testable device. The "A" suffix is for the reworked air inlet design. Both models will accept the modified air inlet parts. In 2010, the test cocks were moved from the body to the ball valves. No special tools are required for servicing.