The P-002 Vacuum Breaker is designed to protect the potable water system by not allowing potentially contaminated water to siphon or backflow into the potable water system. The device is to be installed on to the end of a hose-threaded valve and secured with the set screw. The P-002 Vacuum Breaker is recommended for use on a sill faucet, boiler drain or self-draining freezeless hydrant. This device is not recommended for use on a standard freezeless hydrant as it will prevent the hydrant from draining after shutoff, and thus can cause damage at freezing temperatures.
Prier® Hose End Vacuum Breaker, Anti-Siphon, Series: P-002, For Use With: Sill Faucet, Boiler Drain or Self-Draining Freezeless Hydrant, P-164 Diamond Series Quarter-Turn Freezeless Wall Hydrant, C-158/258 Series Anti-Siphon Hose Bibbs and C-144 Series Anti-Siphon Wall Hydrant, Specifications: 1-3/8 x 1-3/4 in, Brass, Satin Nickel Plated, Domestic