Direct water flow one-way through pipe with the PVC Spring Check Valve, 1-1/2 in. IPS FPT X FPT. Water is allowed through the valve when the water pressure is greater than the weight of the 1/2 lb spring. This leak-resistant valve connects two 1-1/2 in. MPT pipes in an irrigation or other pressurized system and prevents the backflow of water. Prevents costly property damage, pipe corrosion, and system issues. Durable check valve is made of PVC plastic. Pressurized Spring is made of stainless steel. Washer is made of EPDM. Use fittings and other valves to set up a new irrigation system, expand an existing system, or make repairs.

Check valves are used to prevent backflow in pipelines. Check valves are one-way valves installed in pipe systems to allow water to flow through freely but will automatically close off if the water flow reverses, in order to protect the pipe and other system components. NDS check valves are engineered for ease of installation, durability, and performance.

NDS offers a range of engineered specialty fittings and valves for residential, commercial, and industrial applications. Access specifications and project design support on the NDS website. NDS is a leader in flow management solutions and the preferred choice of professionals.

• Use with other compatible check valves or ball valves

• Use with unions

• Use appropriate sized fittings to connect pipe together and to other components

• Assembled in Mexico from parts made in the USA