The P74 Series of differential pressure switches measure the difference in pressure exerted upon its two sensing elements and operate a SPDT switch at the differential pressure setpoint. The setpoint may be adjusted without removing the cover and is visible on a calibrated scale.

• Brass bellows
• Completely enclosed contact mechanism
• Externally adjustable with visual setpoint scale
• Universal mounting bracket supplied
• Heavy duty elements withstand high overrun pressure
• For air, oil, or other liquids
• Differential adjustable range 2 - 30 psi  (14-207 kpa)