Stenner Pump Company MCCVDB0 Check Valve Duckbill Only (Pack of 5)

Great product and exactly what I needed

Thanks for providing these on Amazon at a reasonable price, so many of the special water treatment products are over priced and hard to find!

good quality and saves me future trips to local supplier.

Great valuse when you buy them in bulk but they will dry out over a few yearsso when you go to use the 3rd or 4th one there usually no good and will leak.I'm trying a food grade silicone paste to coat my spares to see if it will perserve them..I tried the black version of these and they were worse. Barely got a yr out of one, didn't even botherusing the spare I had and there used on a well, no chlorine.

These little check valve may be the reason your tank in not siphoning. Replaced and done.

Works

Tried a aftermarket duckbill but had to have the opening cut. Get the OEM.

All five came as ordered and time will tell how well they perform. Usually they last a long time but I had one duckbill that came with my initial injection valve that did not perform well and water from my pool back filled and overflowed my acid reservoir causing a BIG mess. The price of these is exorbitant but cheaper than buying a whole new injection assembly that contains a new duckbill (which in most cases is all that is really needed).