Robertshaw 2374-500 Pressure Switch 318518-761 then backing off the screw

then backing off the screw to a level determined by the machine's normal operating vibration plus an overhead margin

Corrosion Resistance: Heavy-duty aluminized steel construction resists oxidation and scaling during high-demand heating cycles

Top Guided Design: Provides precise alignment of the disc and seat to ensure consistent popping pressure and reseating

5-inch body and is compatible with standard 120V or 240V solenoid coils depending on the specific system configuration

Robertshaw 2374-500 Pressure Switch 318518-761 then backing off the screwThe Robertshaw 2374 500 Pressure Switch is a high performance, field adjustable air sensing switch designed for critical monitoring in residential and light commercial HVAC systems. This SPDT (Single Pole Double Throw) control is engineered to sense positive, negative, or differential air pressure, making it a versatile replacement for a broad range of furnace pressure switches, electronic air cleaners, and humidifiers. Operating reliably in extreme