Kingston 125SS Series Brass Safety Valve, 10 psi Set Pressure, 1/8" NPT Male

Performs great

once had a RUD (rapid unscheduled disassembly) on my boiler, very scary and never want to repeat

Well made

Functioned without a problem

Leaks too much even at 4psi for my application.

Triggered at 10 psi

I used this as an air pump overpressure valve for my septic pump. Set it at 3 psi (by loosening locknut and turning cap ccw), since my normal operating pressure is 1-2 psi. Will protect pump diaphram if aerator gets clogged. Found that valve would oscillate when releasing pressure, so I added some hysteresis friction by putting some thick silicone grease on the spring and calibrating it horizontally. This slowed down the actuator enough to stop it's rapid oscillating response.

I built a camping shower tube out of pvc! I connect a compressor via schrader valve to pressurise the tube so i can use the spray hose! This little guy prevent the seals from exploding by keeping it at the right pressure! Works great! I set my compressor to 15! that way it keeps running while this little says no and bleeds at 9 -10 lbs