Dwyer Instruments 1910-20 Pressure Switch, R-407A Standardized Integration: Features 1/2" NPT

Standardized Integration: Features 1/2" NPT ports and a 120V/60Hz coil for seamless replacement in most North American HVACR setups

This condensate drain kit is used in over 300 furnaces

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the 21441U is a versatile and essential part for maintaining system integrity and performance

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Dwyer Instruments 1910-20 Pressure Switch, R-407A Standardized Integration: Features 1/2" NPTDesigned for precision and field reliability, the Dwyer Instruments 1910 20 is a essential differential pressure switch for monitoring air and non combustible gases in HVAC systems. This Series 1900 pressure switch features a wide set point range of 4. 0" w. c. to 20. 0" w. c., making it ideal for high demand applications such as clogged filter detection, fan proving, and frost prevention on refrigeration coils. The unit utilizes a single pole double