Differential Pressure Mechanical Pressure Switch

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

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

Wet/Wet Differential Pressure Switch for use with most gases and water based solutions. Externally adjustable set point, integral mounting flange and a removable electrical terminal block for quick and easy installation.

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.

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

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.

Gas Pressure Switch used with natural, manufactured, or LP gas. Applications in gas furnaces and natural, manufactured or LP gas applications. Compact and low cost. Ideal for high or low gas pressure interlock.

Double Bellows Differential Pressure Switch applies to accurate switch triggers in high pressure applications. Optional weatherproof construction is for outdoor use and explosion-proof enclosure.

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.

Compact Low Differential Pressure Switches

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

Miniature Pressure Switch applies to air proving, ventilation flow, and pressure monitoring. Low Cost. Lightweight, but shock and vibration resistant.

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

Gas Pressure/Differential Pressure Switch is used with air and other compatible gases. Clear easy-to-read, and convenient external setpoint adjustment. Applications include natural, manufactured or LP gas.

Wireless Communications Adjustable Differential Pressure Switch used to monitor pressure, vacuum, and differential pressures.

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

Differential Pressure Switch which is capable of carrying moderate shock and vibratory loads. Piston design allows mounting in any orientation. Offers field adjustments and can handle system pressures up to 6000 psig.