The Johnson Controls MP822D001A is a 25-square-inch pneumatic valve actuator designed for precise proportional control in HVAC systems

Durable Solder Connections: Features 7/8" x 1 1/8" ODF openings for high-strength

Precise Safety Calibration: Fixed L290F trip point ensures the system shuts down accurately before thermal stress damages the heat exchanger

As the direct updated replacement for the HUHAAB20

including durable silver-cadmium oxide contacts

Trane HTR4907 Crankcase Heater R-407C The Johnson Controls MP822D001A isThe Trane HTR4907 Crankcase Heater is a critical component for maintaining compressor reliability in commercial and residential HVAC systems. Designed as an insertion type heating element, this 230 volt, 40 watt unit effectively migrates refrigerant out of the compressor oil during the off cycle. This prevents flooded starts and ensures proper lubrication of the scroll or reciprocating internal components upon startup. With a precise 1 4" diameter and