Lochinvar Pressure Switch WC SPDT

This Lochinvar pressure switch line covers OEM SPDT (single-pole, double-throw) air pressure switches calibrated in inches of water column (WC). They are also called low air pressure switches, differential pressure switches or boiler pressure switches. They are used as control components in Lochinvar and A. O. Smith commercial heating equipment, such as boilers and water heaters.

Key Features:

• SPDT contact configuration: one common terminal switches between normally open and normally closed contacts, so the switch can work in safety and proving circuits.
• Water column (WC) pressure setting: each variant in the line is set to a different WC pressure point to suit the application.
• Pressure monitoring: senses pressure changes and signals the control system, which helps the appliance run as designed.
• OEM replacement: built for Lochinvar equipment, so it works as a direct replacement control part.

Pick the variant that matches your original part number and WC setting. Each one has its own manufacturer part number.