The Daikin-McQuay 049121701 Fan Blade is a precision-engineered OEM replacement condenser fan designed for high-performance heat rejection in commercial and residential HVAC units

this is a mechanical temperature control that utilizes a capillary system for switching

Field Serviceable: The adjustable differential pressure switch mechanism allows for fine-tuning the operating range between 5 and 65 PSI

Utilizing a high-performance regulator spring is critical for technicians performing gas valve pressure adjustments or converting appliances for different fuel profiles

and most standard pneumatic systems using 1/4" tubing

Ranco O12-1550 Pressure Control Els PW 17895 The Daikin-McQuay 049121701 Fan BladeThe Ranco O12 1550 dual pressure control is a precision engineered HVACR safety switch designed for commercial refrigeration systems utilizing non corrosive refrigerants. This Dual Pressure Controller features a low pressure side ranging from 10" WC to 100 PSI and a high pressure manual reset side factory set at 325 PSI. Engineered for reliability, the SPST switch action ensures precise compressor cycling and high end protection against head pressure