Johnson Controls A-4000-144 Relief Valve Els PW 17895 including various configurations of YK

including various configurations of YK and YT series compressors where specific 0-ring and gasket profiles are required for internal oil systems and housing seals

What is the difference between the 20-850 and the older 10-82

Key Benefits for Technicians:

Durable Construction: Built with a heavy-duty brass body and stainless steel springs to withstand high-temperature cycling

The assembly is typically mounted through an insulator

Johnson Controls A-4000-144 Relief Valve Els PW 17895 including various configurations of YKThe Johnson Controls A 4000 144 is a professional grade safety relief valve designed specifically for pneumatic control systems and air compressor accessories. Featuring a 1 4" NPT male connection, this pop type valve is factory set to activate at 25 PSIG, providing a critical mechanical failsafe against overpressurization in the supply line. The robust brass body construction ensures durability and corrosion resistance, essential for maintaining the