PVC True Union Check Valve, 3/4’’ Slip Swing Full Port Utility Check Valve, Sch80 Socket Pool Ball Check Valve for Backflow Prevention

Works great as long as this valve is installed vertical and with upward direction of water flow. No internal metal parts to corrode, double union allows easy maintenance access. Check has a simple design that relies on positive flow to lift plug and gravity to re-seat plug when off.Old check failed due to internal metal parts that corroded and was not repairable.

This valve works really well for my sprinkler system pump. My previous check valve cracked in a freeze, this one will allow me to remove the valve and fully drain it for the winter season (Texas). My only complaint is that the item description says that it is spring loaded, but it is not. It has a half-ball that is gravity closed. This made me change my plan from installing horizontally, to vertically. Maybe it would have still worked horizontally, but I didn’t want to experiment. Not a terrible plan change, just an inconvenience.

Perfect fitting. Solved my pool trough problem

I've used the 1" inch units without an issue and they work great, BUT the 1-1/4" unit has a diameter SMALLER than standard USA 1-1/4" PVC pipe. BE WARNED.

Big thing to know is this will only work in a vertical or sloping setup. That said it's simple, comes with spare o-ring and gasket, built very solid and worked perfectly in my application.

One way valve prevents water from flowing back down. Easy to use and clean

The Boltigen PVC True Union Check Valve was requested to be utilized in a system of stored H20 & hydroponic farming. The valve body is solid, being Sched 80 rated, and manufacturer provides an additional O-ring & seat rubber. Excellent fitment of all parts makes the valve a winner!

I used this as a check valve on my return from my sump to display tank and it's silent and works well