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Differential Pressure Switches

These highly versatile differential pressure switches are ideal for pump control, pumping systems, waste water, HVAC/R and process applications. Find a wide selection of switches with different types of cases and even explosion proof models when working in volatile environments.


Dwyer 1900 Series Compact Low Differential Pressure Switches-

Dwyer 1900 Series Compact Low Differential Pressure Switches

For air and non-combustible compatible gases, Series 1900 switches have set points from 0.07 to 20" w.c. (1.8 to 508 mm). Set point adjustment is easy with range screw located inside conduit enclosure and prevents tampering. UL, CE and CSA listed, and FM approved.


Dwyer 1950 Series Explosion-proof Differential Pressure Switches-

Dwyer 1950 Series Explosion-proof Differential Pressure Switches

CE, UL and CSA listed, FM approved for use in Class I, Div 1, Groups C and D, Class II Groups E, F, and G and Class III hazardous atmospheres NEMA 7 & 9. Raintight NEMA 3 (IP54). Weatherproof features include a drain plug and O-ring seal in cover. Series offers set points from 0.03 to 20" w.c. (7.5 to 5 kPa) and from 0.5 to 60 psi (0.035 to 3.5 bar).


Dwyer 1630 Series Large Diaphragm Pressure Switches-

Dwyer 1630 Series Large Diaphragm Pressure Switches

This high precision large diaphragm pressure switch incorporates a visible set point indicator for maximum convenience. UL and CSA listed, FM approved for general service, these switches are suitable for most applications in air conditioning and industrial service. Electrical capability of 15 amps handles most small electrical loads.


Dwyer 1800 Series Low Differential Pressure Switches for General Industrial Service-

Dwyer 1800 Series Low Differential Pressure Switches for General Industrial Service

Featuring a compact switch with 2% repeatability for enough accuracy for all but the most demanding applications. Set point adjustment inside the mounting stud permits mounting switch on one side of a wall or panel with adjustment easily accessible on the opposite side. UL and CSA listed, and FM approved.


Dwyer 1950G Series Explosion-proof Differential Pressure Switches-

Dwyer 1950G Series Explosion-proof Differential Pressure Switches

UL listed for use in Class I, Groups A, B, C, & D; Class II, Groups E, F, & G and Class III atmospheres, Directive 94/9/EC (ATEX) Compliant for CE ATEX II 2G Exd IIB+H2 T6, CSA & FM approved for Class I, Div. 1, Groups B, C, D; Class II, Div. 1, Groups E, F, G and Class III atmospheres IECEx Ex d IIB+H2 T6 (-40°C < Ta < 60°C).


Dwyer ADPS Series Differential Pressure Switches-

Dwyer ADPS Series Differential Pressure Switches

Designed for pressure, vacuum, and differential pressures. The dual scaled adjustment knob in inches water column and pascals allows changes to the switching pressure to be made without a pressure gauge. The ADPS/EDPS is available with settings from 0.08 in w.c. (20 Pa) up to 20 in w.c. (5000 Pa).


Dwyer DH3-011 Digihelic Differential Pressure Controller (0-100"w.c.)-

Dwyer DH3-011 Digihelic Differential Pressure Controller (0-100"w.c.)
Model: DH3-011

Sale Price $287.05 USD
Regular Price $307.00 USD
Availability 1 Week

Qty:

Sale Price $287.05 USD
Regular Price $307.00 USD
Availability 1 Week
Quantity

Dwyer MDA Series Miniature Adjustable Pressure Switches-

Dwyer MDA Series Miniature Adjustable Pressure Switches

Features field adjustable set point and gold inlay contacts. Air or other compatible fluids can be used on the "high side". The lightweight and compact size make the MDA ideal for any application with space constraints. Applications include industrial, HVAC/R, pump and motor control, medical, automotive, pools and spas.


Dwyer 1620 Series Single and Dual Pressure Switches-

Dwyer 1620 Series Single and Dual Pressure Switches

Model 1626 and 1627 differential pressure switches are identical in design and construction except that Model 1626 has a single electric switch and Model 1627 has dual electric switches, which can be set to open or close two independent electrical circuits.


Dwyer 1640 Series Floating Contact Null Switches for High and Low Actuation-

Dwyer 1640 Series Floating Contact Null Switches for High and Low Actuation

The 1640 is equipped with a single pole, double throw floating contact switch (not snap acting) so it functions as a null switch. As the diaphragm moves in response to pressure changes, it moves the floating contact to cause switching action at two preset points with no switching action between these points.


Dwyer 3002 Photohelic Pressure Switch Gauge-

Dwyer 3002 Photohelic Pressure Switch Gauge
Model: 3002 | Order No: 3002/B

Sale Price $762.03 USD
Regular Price $815.00 USD
Availability 2 to 3 Weeks

Qty:

Sale Price $762.03 USD
Regular Price $815.00 USD
Availability 2 to 3 Weeks
Quantity

Dwyer 43000 Series Capsu-Photohelic Pressure Switch/Gauges-

Dwyer 43000 Series Capsu-Photohelic Pressure Switch/Gauges

Employs an encapsulated sensing element for use with both liquids and gases at pressures to 500 psig (34 bar). Optional cast brass case is available for water or water based liquids. Two phototransistor actuated, DPDT relays are included for low/high limit control.


Dwyer MDS Series Miniature Pressure Switches-

Dwyer MDS Series Miniature Pressure Switches

The Series MDS Pressure Switch is designed with a double diaphragm to protect false actuation due to shock and vibration. This low cost pressure switch has a minimum 20 million cycle life expectancy, and an extremely fast response time, making this an ideal device for OEM orders.


Dwyer PG Series Gas Pressure/Differential Pressure Switches-

Dwyer PG Series Gas Pressure/Differential Pressure Switches

Large sensitive diaphragm and reliable, time proven mechanical design are combined in Series PG pressure/differential pressure switches. For use with air and other compatible gases, they feature excellent ±1% of full scale repeatability, clear easy-to-read scale and convenient external setpoint adjustment.


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