https://www.acehardware.com/departments/plumbing/pumps-and-pump-parts/check-valves/4538567
Campbell 1 in. D X 1 in. D Yellow Brass Spring Loaded Check Valve Mfr# FV-4TYBLF - Ace Hardware
For years, Campbell Manufacturing has been North America's most comprehensive supplier of parts and products for residential and light-duty commercial well...