ATIE Upgraded Pool Check Valve Rebuild Kit Compatible with 263042Z Check Valve Rebuild Kit for Pentair 2" Check Valve 263042 ONLY (Not Compatible with FullFLOXF Check Valves 263060 & 263077) (1 Pack)

I am giving 5 starts for initial ease of installation and fit. Time will tell whether or not these hold up compared to the major brand but I am hopeful. Process was straight forward and I made sure to use silicone grease on the gasket. Perhaps I should have taken away a star for lack of included screws but my original ones were in good condition so I didn't care.

These work very well, complete shut off, no internal leakage

Product fit correctly but started leaking within 4 months of install. Now I have to buy another. DO NOT BUY THIS PRODUCT!!!

Just what I needed! The quality of this valve is fine and it was an easy install. It's been 4 months and no problems. If you need one this is a good value.

The rubber part of the flapper on the check valve between our pump and the cartridge filter in our pool system was falling apart; chlorine is very hard on rubber and plastic components. I was not sure which model replacement valve I needed, because the label was missing from the in-place check valve. I counted the number of screws and took a chance that this was the correct one. I didn't not want to pay $65 for a Pentair version, so I opted for this cheaper version. I had a bit of problem installing it - as mentioned in another review, the o-ring does not seat firmly in the cover; if the screws aren't perfectly snug, it will leak. I did not want to chance breaking the plastic by torquing down the screws, so I slowly tightened each screw, alternating between the 6 screws, until no water leaked out. For this I deducted one star. It fits well, and no water leaks from the cartridge filter when the pump shuts off. Maybe my system is different from others that left bad reviews that the flapper let water leak through, but I've had no problems. It has been installed about 6 weeks and is still working well.

My original check valve started leaking. when I opened it up I found a rubber seal badly distorted. This new one fit in and worked fine. Mine was a pentair unit.

Valve may not fit your pool check valve

The part was not like the original but covered the space fine and bolt up was easy. Use a traditional old school Phillips head and hand tighten. Make sure the sealing surfaces inside the body of the check valve are smooth and uniform. After installing check the seal by removing the lid from the chlorine canister and opening the small feed valve on the bottom of the canister. Turn the mainline valves to spa mode and see if you have water entering the canister from the check valve not sealing. If you did a good job and there’s no water you have a good seal. Have a good time and thanks for reading this instructional review. I myself was not sure that this part would work but it turns out it has more sealing coverage than the original flap.

Great value