I have a nearly 20 year old pool system and have had to do some repairs recently. I have never opened my check valves but I have been having the water drain back into the pool for some time but never thought about the check valves being the issue. Once I determined it was the culprit, I started looking for replacements and came across these. Reviews were mostly good but some had issues. Not me.I can tell you that I installed 3 of these in about 15-20 minutes, used Pool grade O-ring lube on the new valve flapper and o-ring seals, and tightened by hand in a star-crossed pattern (like lug nuts on a car tire), and I have had no issues whatsoever. I did inspect the inside of the check valve housings and found some contaminants that needed to be scraped away prior to installing the new flapper. The contaminants were built up and could have prevented a tight seal. I also put some o-ring lubricant inside the valve where the flapper will be seated to ensure a nice seal.Anyone can do this change, I just recommend you wear some latex gloves, bring some paper towels to wipe off excess o-ring lube, and only hand tighten the screws when reinstalling. Old plastic can be brittle and over tightening can easily crack the housing where the screws are inserted.
Rating: [5 of 5 Stars!]