Johnson Controls A-4000-144 Relief Valve Els PW 17895 Broad Compatibility: Direct replacement for

Broad Compatibility: Direct replacement for several retired models

and VCP-34 series pneumatic damper actuators

Its compatibility with air and non-corrosive combustion byproducts makes it a versatile solution for verifying blower operation and airflow safety across diverse ventilation control platforms

Common Questions What is the purpose of an SPDT changeover switch in hydronic systems

Johnson Controls A-4000-144 Relief Valve Els PW 17895 Broad Compatibility: Direct replacement forThe 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