Hromee 5 Piece 1/4 Inch Compressor Air Tank Port Fittings Drain Valve Kit with Solid Brass Hex Head Plugs Winged Style and Twist Style Petcock 140 PSI Safety Valve - Amazon.com
Kobalt 165 Psi Tank Safety Valve in the Air Compressor Fittings department at Lowes.com
Amazon.com: FTVOGUE Thread 3-Way Air Compressor Valve Male Threaded Non-Return Check Valve Spare Parts Tube Connector Tool 3 Port Brass : Industrial & Scientific
1312100497 OEM Air Compressor PIlot Unloader Valve, 145-175psi, For Gas Driven Compressors