ZurnWilkins 1UFX1F-700XL 700XL Dual Check Valve with 1" Female Union Inlet x 1" Female Outlet

great

Product details sheet show 3 orings. There were only 2 orings installed. The last oring according to the illustrated parts catalogue were not included in certain models. So since it was missing, assumed it was not required for this model. Installed the check valve. It leaked profusely at the union joint. Shutoff the breaker, drained the tank, removed the check valve and went out a purchased an oring that was close but not exact. Installed the oring and the check valve again. The valve now functions as expected except it has an external leak. The leak is small but has to be resolved. Now I will have to drain the tank again, remove the valve, disassemble the valve and some how come up with a better size oring. Would be nice if those replacement orings and flat washer per the IPC that were missing could be provided.CheersBarry