and ICP units

its universal 120V/24V 40VA specs make it highly compatible with most HVAC equipment requiring a standard foot-mount Class 2 transformer

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

This enclosed relay features two SPDT (Single Pole Double Throw) contacts

effectively breaking the circuit to prevent overheating

Johnson Controls A-4000-144 Relief Valve Els PW 17895 and ICP unitsThe 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