Dwyer Instruments 1638-10 Pressure Switch R-22 When you're servicing high-efficiency units

When you're servicing high-efficiency units like the Lochinvar Knight XL or A

Efficient Air Handling: Continuous venting prevents air binding and ensures rapid heat-up of steam-using equipment

Optimized Heat Dissipation: Specifically wound to provide 60 watts of power for efficient condenser cooling

Verify there is no moisture buildup in the conduit or probe head

75-inch cast iron sheave be used with both 3L and A section belts

Dwyer Instruments 1638-10 Pressure Switch R-22 When you're servicing high-efficiency unitsThe Dwyer Instruments 1638 10 Pressure Switch is the commercial standard for high precision monitoring of air and non combustible gases. Engineered with a large diaphragm, this Series 1630 switch provides the low range accuracy required for critical HVAC duct air control and damper positioning applications. It operates within a 3" w. c. to 12" w. c. range with a 0. 11 0. 30 approximate deadband, ensuring a reliable differential pressure response