WYNNsky Switch Female Thread Fitting Review

I bought three of these - one two years ago and one recently. One is on the pressure gauge used to measure 60 psi and two on the propane gauge which only measures 15 inches of water, but in either case they shouldn't leak. All valves work perfectly. All valves I received were in good condition. Sealant pre-applied to male threads but not shown in photos. This pre-applied sealant worked very well. The ones I received interacted properly with pipe thread fittings - not so with another brand…

Bought these 2 check valves for my new compressor. At first everything worked as described, there were no leaks. Today I cleaned the interior of the car with the compressor and noticed that the compressor fills the tank more than usual. You can hear the air leak coming from somewhere. This valve (1 of 2) has developed a "crack" behind the hinge as shown in the photo. In terms of quality, it's not very good. UPDATE: I received a reply from WYNNSKY regarding a faulty valve. They were kind enough…

Application: shutting down a small air compressor, replacing an old, worn (leaking) full bore DeVilbiss. The Wynnsky valve is compact and worked in a space I needed the valve to work in, otherwise I would have bought the bulkier Milton valve. The valve does not leak and the red goo on the male end seals the valve without additional teflon tape. The downside to this valve is that "full port" is a stretch. The connector side is an industrial type quick connect lumen size. So this valve is like…