Compatible With: The 905-051 765 check valve assembly repair kit fits perfectly for Model 1/2inch & 3/4inch Backflow PVB Repair. The Maximum working pressure is 150 psi. Replace Model 765 / 905051 / 765CBV / 765DBV. Strong & Long-Lasting: With precise CNC process manufacturing, ensuring easy installation and removal. The check valve assembly is made of high-quality brass and premium plastic with a layered technical structure for extra durability and sturdiness, which is impact-resistant, and corrosion-resistant for professional-level reliability and durability. Easy Installation: When it comes to installing this check valve assembly, no special tools are required. Simply close the valve and open the test valve to release the residual pressure then replace the defective valve, clean, and grease before you install all the components. Then you can turn on the outlet valve, completing the repair. Colour:Photo Color Material:copper Package Contents: 1 x Holder 1 x Screw 1 x Disc Only the