About This Removable Pressure Vessel: The 3/4“ backflow preventer features a removable pressure vessel design, supporting offline maintenance and significantly reducing maintenance time and costs. Backflow and Back Siphon Prevention: The back flow preventer valve can effectively prevent back-siphonage, back pressure-induced pollution, equipment damage and system failure, ensuring system safety and stability. A perfect solution for irrigation and industrial pipeline systems. Durable Materials: The 350 double check backflow preventer is made of stainless steel and UV-resistant reinforced nylon, making it corrosion-resistant. Its detachable design can withstand harsh outdoor conditions, ensuring good performance even in extreme environments. Easy to install: The 34-350 3/4” 350 double check backflow preventer allows for quick and direct installation, supporting both indoor and outdoor use as well as vertical installation, meeting different installation needs and environments. Notice: Please read the instructions carefully and complete the test as required. The 3/4" backflow valve undergoes strict testing before leaving the factory. Please contact us if you encounter any problems. We are always here. Overview Material : Bronze Brand : Atdsetr Item dimensions L x W x H : 17 x 4 x 5 inches Inlet Connection Size : 0.75 Inches Inlet Connection Type : Flange Outlet Connection Type : Flange Number of Ports : 2 Outlet Connection Size : 0.75 Inches Manufacturer : Atdsetr