A.Y. McDonald dual check valve
A.Y. McDonald’s slimmer Inline Dual Check Valve protects the public water supply by preventing the reverse flow of water from the building back into the water main. This valve is able to hold 1 psi in the direction of the flow and can endure a temperature rating of 34° F to 180°. The valve can be installed in either a horizontal or vertical position. In addition, this part provides easy access to check for inspection, maintenance or replacement. It is ASSE 1024-certified.