Differential Pressure Switches

The Series 1950 Explosion-Proof Differential Pressure Switch features a durable weatherproof housing, external set point adjustment, and is ideal for HVAC and process applications.

The Mini-Photohelic Differential Pressure Switch/Gage measures non-corrosive gas pressures with dual switch points and LED indicators, perfect for fume hoods and clean rooms.

Single and Dual Pressure Switch which applies to damper positioning and duct air control. Provides leak-proof construction.

The Dwyer® Series 1950G Explosion-Proof Differential Pressure Switch is weatherproof and UL listed, designed for natural gas and outdoor use, ensuring safety and reliability.

Large Diaphragm Differential Pressure Switches are used with air or compatible gases. Applications include damper positioning and industrial service.

Compact Low Differential Pressure Switches

The Photohelic® Switch/Gages offer precise differential pressure monitoring with easy-to-read analog displays. Compact and durable, they are suitable for various applications.

Compact Low Differential Pressure Switches

The Digihelic® Differential Pressure Controller combines a digital gauge, control relay, and transmitter in one device, offering versatile measurements with 1.5% accuracy.

The Adjustable Differential Pressure Switch monitors pressure and vacuum with an easy-to-use knob. Ideal for HVAC applications, it features a compact design and durable materials.

Wet/Wet Differential Pressure Switch for most gases and water based solutions. External adjustable set point, integral mounting flange and a removable electrical terminal block

Miniature Adjustable Pressure Switch applies to industrial, HVAC, medical and automotive applications. Gold inlay contacts. Small and lightweight.

The PSW-845 series are economical, compact 250 mA SPDT differential pressure switches with a fixed deadband and excellent bypass characteristics.

The Series DH Digihelic® Differential Pressure Controller combines a digital display, control relays, and transmitter for precise pressure, velocity, and flow measurement.

The Series BDPA Adjustable Differential Pressure Alarm features audible/visual alerts and an easy-to-use adjustment knob, ideal for HVAC and ventilation applications.

Explore our Industrial Control series featuring reliable pressure gauges, flow meters, and temperature controllers for precise monitoring and control in various applications.

The PSW-180 series are compact, differential 5 A SPDT switches with the option of a relay or alarm output. They have NEMA-4X housings to withstand harsh environments.

The Dwyer® Differential Pressure Switch features a floating contact design for high/low actuation, perfect for damper positioning and duct air control.

The PSW-150 series are differential 15 A DPDT switches with a fixed deadband and UL listing for general purpose applications.

Differential Pressure Switch for moderate shock and vibration, with a piston for any mounting orientation. It includes field adjustments and supports pressures up to 6000 psig.