the P145NCB-12 is factory-set to the compressor manufacturer's specifications

Engineered for high-demand contractor applications

maintaining system pneumatic control accuracy and operational efficiency

Standardized Mounting: The universal spade terminal configuration allows for rapid field installation and secure wiring

OEM Precision: Ensures exact hole alignment for primary and secondary condensate line connections

Dwyer Instruments 1638-0 Pressure Switch R-22 the P145NCB-12 is factory-set toThe Dwyer Instruments 1638 0 Pressure Switch is a high precision, large diaphragm differential pressure switch engineered for critical HVAC and industrial process monitoring. Designed for use with air and non combustible gases, this low pressure switch features an adjustable range of 0. 05" w. c. to 0. 25" w. c., making it ideal for duct air control and sensitive differential pressure sensing. The unit utilizes a single pole double throw (SPDT)