A true-union spring check valve helps control one-way flow in a compatible plumbing system and also makes service access easier when removal is needed, and this Flo Control valve is designed with 2 inch slip connections and a 1/2 pound spring rating using the 1700C20 reference. When a check valve becomes unreliable or difficult to service, overall plumbing maintenance can become more complicated than it should be.The 2 inch size, lighter spring configuration, and true-union design give this valve practical value because a properly matched replacement should fit the system size while also supporting easier maintenance. A correctly selected valve helps restore intended backflow control and contributes to cleaner circulation-system performance.This type of part is especially useful when future valve access matters in the plumbing layout. That makes the union construction a practical long-term benefit.Installed in the proper setup, this true-union spring check valve helps restore dependable one-way flow control and contributes to better overall plumbing reliability. True-union spring check valve with 2 inch slip connections 1/2 pound spring configuration supports intended flow control Helps restore dependable one-way valve performance Union design supports easier service and removal Improves plumbing reliability and maintenance efficiency