American made brass valve with removable clip for easy maintenance of inner valve. Machined C360 brass body. 302 stainless steel spring. 15% glass-filled teflon poppet. 1 PSI cracking pressure, maximum pressure: 500 PSI, maximum temperature: 450°F Thread seal applied or supplied for valves with NPT threads. 100% tested for backflow leakage 6 month no hassle warranty Sellerocity Compressor Check Valve Compatible with Sanborn Coleman Powermate 031-0036