Pressure Switches

Pressure switches are critical control components used to monitor system pressure and activate or deactivate equipment when preset pressure levels are reached. Commonly used in hydraulic, pneumatic, air, gas, and compressor systems, these devices provide dependable on/off control for pumps, motors, alarms, and safety interlocks. Their role is essential in protecting equipment, maintaining system stability, and ensuring safe operation in industrial and commercial environments.

Industrial pressure switches are available in both mechanical and electronic designs. Mechanical pressure switches are well-suited for straightforward pressure control applications where simple, reliable switching is required. Electronic pressure switches offer greater precision, digital outputs, and enhanced configurability, making them ideal for more complex systems that require tighter control or integration with automation equipment.

A wide range of pressure switch configurations is available to support varying application requirements. Options include low-pressure and high-pressure switches, adjustable setpoint models, differential pressure switches, and designs intended for hazardous or demanding environments. 

Found 827 items
Normally In Stock
Dwyer 1920-0 Compact Low Differential Pressure Switch
Free U.S Ground shipping
$133.21
$111.01
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Dwyer MVS-4 Miniature Vacuum Switch
Free U.S Ground shipping
$41.23
$34.36
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Dwyer CXA-R1 Water Pump Pressure Switch
Free U.S Ground shipping
$24.43
$20.36
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Dwyer DA-7041-153-22E Bourdon Tube Pressure Switch
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$2070.04
$1725.03
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Dwyer 1950-00-2F Compact Low Differential Pressure Switch
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$426.79
$355.66
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Dwyer 1006W-A1-D Weatherproof Diaphragm Operated Pressure Switch
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$900.36
$750.30
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Dwyer A9-6 Snap-Action Pressure Switch
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$54.37
$45.31
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Dwyer A3010 Photohelic® Pressure Switch/Gauge
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$840.46
$700.38
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Dwyer A3301 Photohelic® Pressure Switch/Gauge
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$864.00
$720.00
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Dwyer A1PS-34 Economical Pressure Switch
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$110.22
$91.85
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Dwyer A1F-O-SS-1-1 OEM Pressure Switch
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$233.51
$194.59
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Dwyer EDPS-04-1-N Differential Pressure Switch
Free U.S Ground shipping
$43.92
$36.60
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Dwyer 1950-0-2F Compact Low Differential Pressure Switch
Free U.S Ground shipping
$426.79
$355.66
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Dwyer 1824-2 Low Differential Pressure Switch For General Industrial Service
Free U.S Ground shipping
$137.05
$114.21
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Dwyer 1920-5 Compact Low Differential Pressure Switch
Free U.S Ground shipping
$133.21
$111.01
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Dwyer ADPS-04-1-N Differential Pressure Switch
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$33.70
$28.08
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Dwyer MHS-1 Miniature High Sensitivity Pressure Switch
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$34.28
$28.57
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Dwyer MHS-2 Miniature High Sensitivity Pressure Switch
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$34.28
$28.57
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Dwyer 1911-1 Compact Low Differential Pressure Switch
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$99.83
$83.19
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Dwyer A2-7803 Subminiature Pressure Switch
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$68.82
$57.35
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Dwyer ADPS-04-2-N Differential Pressure Switch
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$33.70
$28.08
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Dwyer ADPS-06-1-N Differential Pressure Switch
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$33.70
$28.08
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Dwyer MHS-4 Miniature High Sensitivity Pressure Switch
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$34.28
$28.57
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Dwyer CXA-S1 Water Pump Pressure Switch
Free U.S Ground shipping
$24.43
$20.36
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Dwyer DAW-7033-153-3A Bourdon Tube Pressure Switch
Free U.S Ground shipping
$1598.35
$1331.96
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Dwyer 1824-0 Low Differential Pressure Switch For General Industrial Service
Free U.S Ground shipping
$137.05
$114.21
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Dwyer MDA-011-T Miniature Adjustable Pressure Switch
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$44.48
$37.07
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Dwyer MVS-1 Miniature Vacuum Switch
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$39.07
$32.56
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Dwyer MVS-2 Miniature Vacuum Switch
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$39.71
$33.09
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Dwyer DA-7035-153-5N Bourdon Tube Pressure Switch
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$3085.45
$2571.21
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Dwyer MDA-311 Miniature Adjustable Pressure Switch
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$42.07
$35.06
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Dwyer MDA-411 Miniature Adjustable Pressure Switch
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$42.07
$35.06
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Dwyer 1996-5 Gas pressure switch
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$211.28
$176.07
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Omega PSW-582 PRESSURE SWITCH, 40PSIG, 15AMP
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$148.00
$123.33
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Omega PSW12T-GS VIBRATION RESISTANT SWITCHES
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$1030.19
$858.49
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Dwyer A6-651221 Pressure Switch
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$37.54
$31.28
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Dwyer A6-251221 Pressure Switch
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$37.54
$31.28
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Dwyer A6-253221 Pressure Switch
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$41.23
$34.36
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Dwyer A6-353221 Pressure Switch
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$41.23
$34.36
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Dwyer A6-451221 Pressure Switch
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$37.54
$31.28
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Dwyer A6-453221 Pressure Switch
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$41.23
$34.36
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Dwyer A6-551221 Pressure Switch
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$38.23
$31.86
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Dwyer A6-553221 Pressure Switch
Free U.S Ground shipping
$41.23
$34.36
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Dwyer A6-653221 Pressure Switch
Free U.S Ground shipping
$41.23
$34.36
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Dwyer A6-751221 Pressure Switch
Free U.S Ground shipping
$37.54
$31.28
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Dwyer A6-753221 Pressure Switch
Free U.S Ground shipping
$41.23
$34.36

FAQs

Q: What is a pressure switch and how does it work?
A pressure switch monitors system pressure and opens or closes an electrical contact when a preset pressure level is reached. It is designed for on/off control rather than continuous measurement, making it suitable for equipment protection, alarms, and system control functions.

Q: What are pressure switches commonly used for?
Pressure switches are used to control pumps and compressors, protect equipment from overpressure or loss of pressure, and trigger alarms or shutdowns. They are widely applied in hydraulic systems, pneumatic systems, HVAC equipment, industrial machinery, and process systems.

Q: What types of pressure switches are available?
Pressure switches are available in mechanical and electronic designs with fixed or adjustable setpoints. Common types include differential pressure switches, vacuum pressure switches, low-pressure switches, and high-pressure switches, each suited to specific operating conditions.

Q: How do I choose the right pressure switch for my application?
Selection depends on operating pressure range, media compatibility, temperature, electrical load, environmental exposure, and required accuracy. Additional factors include hysteresis, enclosure rating, and any certifications required for safety or hazardous locations.

Q: Do pressure switches require calibration or maintenance?
Yes, pressure switches should be periodically inspected and tested to confirm proper activation at the intended setpoints. Maintenance schedules vary by application, but regular checks help ensure reliable switching and long-term system protection.

Why Buy Pressure Switches from RSP Supply

RSP Supply provides a comprehensive selection of industrial pressure switches designed for reliable control in demanding applications. Our offerings support a wide range of pressure ranges, media types, and environmental conditions, helping ensure accurate switching and dependable system protection. Customers rely on RSP Supply for consistent product quality, technical expertise, and solutions that support safe and efficient pressure control across industrial operations.