Lennox 51M87 Pressure Switch 320734-701 the MP843D001 integrates seamlessly into

the MP843D001 integrates seamlessly into existing pneumatic loops

Is an upstream regulator required

the Raypak 006713F O-ring Gasket Kit is engineered to withstand the thermal cycling and chemical exposure typical of modern digital atmospheric gas heaters and Low NOx pool heaters

The Danfoss 032U7120 is a high-performance EV220B 20B G 34 E EPDM servo-operated 2/2-way solenoid valve designed for rigorous industrial and HVACR applications

Key Benefits for Contractors Direct OEM Compatibility: Specifically engineered for York HVAC systems to ensure the correct microamp signal to the ignition control board

Lennox 51M87 Pressure Switch 320734-701 the MP843D001 integrates seamlessly intoThe Lennox 51M87 is a precision engineered furnace pressure switch designed for critical venting safety within Lennox HVAC systems. This 1. 6" WC SPDT N. O. pressure switch functions as a fail safe, ensuring the inducer motor is generating adequate static pressure before allowing the ignition sequence to proceed. The 51M8701 is the identical direct replacement, maintaining the exact factory set point of 1. 60 inches of water column. As a Single Pole