Wilkins 720a Pressure Vacuum Breaker Manual

The pressure vacuum breaker shall be asse 1020 approved and supplied with full port ball valves.

Wilkins 720a pressure vacuum breaker manual. After the installation of a model 720a pressure vacuum breaker has been completed place the unit in service as follows. Applications are primarily non potable residential and commercial irrigation systems. 1 to provide proper operation of the air inlet valve. Zurn rk1 720ab wilkins pressure vacuum breaker pvb bonnet repair kit for 1 2 to 1 model 720a and for 0 5 to 1 4 7 out of 5 stars 171 20 40 20.

The model 720 and 720a are pressure vacuum breaker assemblies. Pvb backflow preventer 1 720a 1 is used in high hazard applications and is used primarily in non potable residential and commercial irrigation systems. 720a pressure vacuum breaker assembly protects against backsiphonage in high health hazard non potable residential and commercial irrigation applications. The 720a includes an approved check valve vacuum relief two test cocks and inlet and outlet full port resilient seated shut off valves.

Before installing the wilkins model 720a pressure vacuum breaker flush the lines thoroughly to remove all debris chips and other foreign matter. The model 720a must be installed in a vertical position see fig. Outdoor installation indoor installation capacity thru schedule 40. A brief discharge from the air vent may occur while the device is.

Open the inlet shut off valve until the pressure vacuum breaker is completely pressurized. Zurn wilkins 720a pressure vacuum breaker. Start with both shut off valves and test cocks closed. Provide adequate space around the installed unit so that the test cocks.

Production began approximately 1975 under the smr name. The vacuum breaker includes an approved check valve vacuum relief two test cocks and inlet and outlet full port resilient seated shut off valves. The main body and bonnet shall be bronze astm b584 the loaded air inlet shall use an silicone elastomer spring and seat disc. Shop for the wilkins 720a 3 4 pressure vacuum breaker at http www sprinklerdaddy ca catalog item 6209379 7090376 htm in this video sean stefan of sprinkl.

Around 1978 it was sold to the neptune meter co. Zurn wilkins 720a pressure vacuum breaker.