The Zurn Wilkins 12-760 is a dual check valve backflow preventer with an intermediate atmospheric vent designed for boiler fill water lines This assembly protects the potable water supply from backsiphonage and backpressure where a non-health hazard exists It is constructed with a forged brass body stainless steel springs and FDA-approved elastomers for durability Rated for 175 PSI and 210F this CSA and ASSE listed device ensures reliable performance in residential and light commercial hydronic systems.

Attribute	Details
Brand	Zurn Wilkins
Model Number	12-760 (Model 760)
Type	Dual Check Valve Backflow Preventer
Size	1/2 Inch
Connection	1/2" FNPT Threaded Union (Standard)
Maximum Pressure	175 PSI
Maximum Temperature	210°F
Body Material	Forged Brass
Spring Material	Stainless Steel 300 Series
Seal Material	FDA-Approved EPDM and Buna Nitrile
Vent Type	Intermediate Atmospheric Vent
Standards	CSA B64.3, ASSE 1012
Application	Boiler Fill Water Lines
Flow Direction	Unidirectional as Marked
Installation	Requires Air Gap at Vent Port
Package Contents	Preventer with Union Tailpieces
Compliance	Uniform Plumbing Code