Wilkins 1" Pressure Vacuum Breaker (PVB)Assembly 720A.

APPLICATION
Designed for installation on potable water lines to protect against back siphonage of contaminated water into the potable
water supply. Assembly shall provide protection where a potential health hazard exists.

MATERIALS
-Main valve body Cast Bronze ASTM B584
-Fasteners Stainless Steel, 300 Series
-Elastomers Silicone (FDA approved)
-Buna Nitrile (FDA approved)
-Polymers Polypropylene (FDA approved)
-Delrin (FDA approved)
-Springs Stainless steel, 300 series

FEATURES
Maximum working water pressure 150 PSI
Maximum working water temperature 110°F
Hydrostatic test pressure 300 PSI
End connections threaded ANSI B1.20.1

STANDARDS COMPLIANCE
ASSE Listed 1020
IAPMO Listed
CSA Certified
Approved by the Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California

TYPICAL INSTALLATION
Local codes shall govern installation requirements. Unless otherwise specified, the assembly shall be mounted at a
minimum of 12" (305mm) above the highest piping or outlet downstream of the device. Install with adequate drain and sufficient side clearance for testing and maintenance. The installation shall be made so that no part of the unit can be submerged. A pressure vacuum breaker cannot be installed where back-pressure could occur or where spillage
of water from vent could cause damage.

SPECIFICATIONS
The Pressure Vacuum Breaker shall be ASSE 1020 approved, and supplied with full port ball valves. The main body and bonnet shall be bronze (ASTM B584), the loaded-air inlet shall use an silicone elastomer spring and seat disc. The entire assembly shall be accessible for maintenance and testing without removing the device from the line. The Pressure Vacuum Breaker shall be a WILKINS Model 720A.