Designed for installation on potable
water lines such as service
sinks and hose bibs to protect
against backsiphonage of polluted
water into the potable water
supply. A break-away set screw is
included to prevent unauthorized
removal. The manual drain features
allows the vacuum breaker
to be opened to drain the supply
line to prevent freezing.
Brass body with brass and stainless steel internals is rated for
125 psi. Elastomers are Buna-N, FDA21, 177.2600 and polymer
is Acetal (Delrin®, NSF Listed).