My Pressure Vacuum Breaker Leaking

If water is flowing into the sprinkler system the o ring of the pressure vacuum breaker will prevent the water from leaking out.

My pressure vacuum breaker leaking. A vacuum breaker is one of several devices designed to prevent water that leaves the faucet from flowing back into the plumbing system. My guess is the owners did no upkeep on it since it wasn t even mentioned when we bought also lots of other things not kept up with so i m not surprised this isn t working. And an air relief valve that opens to break a siphon when pressure drops below 1 psi. Pressure vacuum breakers might leak because sealing tape or plumber s putty is worn or absent in required connections on either side of the breakers.

Over a certain period of time things just wear out. The hose bib is leaking from the top the vacuum breaker is a simple device that basically consists of a diaphragm and a watertight chamber. The culprit is often a leaking pressure vacuum breaker pvb. Louie mcpherson from ewing irrigation landscape supply demonstrates how to repair the febco 765 pressure vacuum breaker.

Anyways we have a wilkins 720a pressure vacuum breaker that goes to our control boxes for our sprinkler zones. A pvb pressure vacuum breaker or sprinkler vacuum breaker is designed to protect against back siphonage of contaminated water from entering your drinking water. Check that the o ring is in good condition and then also look for things like spider webs or wasp nests that are preventing a good seal. Repair kits are available from the manufacturer that are specific to each pvb model.

Any place where water is supplied for any use other than drinking water needs a vacuum breaker installed. Causes of a leaking pvb 1 wear and tear. It may be in need of repair. The little outlet drains on either side of the.

Right before spring your customers will turn on the water at the main valve only to find water gushing out of the breaker valve. When the water is on water pressure forces the diaphragm. A clear sign that something is not working properly is leaking from under the bell or bonnet assembly of the valve.