Key Benefits for Technicians: Direct OEM Compatibility: Serves as the official replacement for part number 626520R

ensuring the static pressure is correctly maintained for the pressure switch to close during the pre-purge cycle

effectively breaking the circuit to prevent overheating

For any technician dealing with high-efficiency boiler installs or retrofitting older tanks

this OEM-spec hardware ensures a flush

Johnson Controls A-4000-144 Relief Valve Els PW 17895 Key Benefits for Technicians: DirectThe 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