Pressure Switches

Pressure switches monitor system pressure and trigger actions like activating or deactivating equipment when preset thresholds are met, and they maintain safety by preventing overpressure or underpressure in hydraulic, pneumatic, and process systems to protect equipment and ensure reliable operation.

1 - 48 of 100 Products
PDX6901 Snubber 0.01μF/470Ω Flexible Leads
Precision Digital
PDX6901_1.png
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OEM Compact Pressure Switch - PSM03
WIKA
Model PSM03.png
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OEM Compact Pressure Switch - PSM02
WIKA
Model PSM02.png
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OEM Compact Pressure Switch - PSM01
WIKA
Model PSM01.png
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Model DPGT43HP.100, DPGT43HP.160 Differential Pressure Gauge with Output Signal
WIKA
PIC_PR_DPGT43HP_100_DPGT43HP_160_de_de_4168.jpg.png
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Model DPGT43.100, DPGT43.160 Differential Pressure Gauge with Output Signal
WIKA
Model DPGT43.100, DPGT43.160.png
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Model DPGS43HP.100, DPGS43HP.160 Differential Pressure Gauge with Switch Contact
WIKA
PIC_PR_DPGS43HP_100_DPGS43HP_160_de_de_48145.jpg.png
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Model DPGS43.100, DPGS43.160 Differential Pressure Gauge with Switch Contact
WIKA
PIC_PR_DPGS43_100_DPGS43_160_de_de_48144.jpg.png
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Model DPGS40TA Differential Pressure Gauge with Micro Switch
WIKA
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Model DPGS40 Differential Pressure Gauge with Micro Switch
WIKA
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Model A2G-90 Differential Pressure Gauge with Pressure Switch
WIKA
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Mini Pressure Switch - PXS
WIKA
Wika Mini pressure switch, Model PXS
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Mini Pressure Switch - PXA
WIKA
Wika Mini pressure switch, Model PXA
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Mechanical Pressure Switch - Model PCA
WIKA
Wika Mechanical pressure switch, Model PCA
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Gas-Actuated Thermometer with Switch Contacts - 74-8xx
WIKA
Wika Gas-actuated thermometer, Model 74-8xx
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Gas-Actuated Thermometer with Switch Contacts - 73-8xx
WIKA
Wika Gas-actuated thermometer, Model 73-8xx
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Electronic Pressure Switch with Display - PSA-31
WIKA
Wika Electronic pressure switch, Model PSA-31
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Electronic Pressure Switch - PSD-30, PSD-31
WIKA
Wika Electronic pressure switch, Models PSD-30, PSD-31
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Differential Pressure Switch - DW03UN
WIKA
Wika Differential pressure switch, Model DW03UN
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Differential Pressure Switch - DW, DW10
WIKA
Wika Differential pressure switch, Models DW, DW10
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Differential Pressure Switch - DA, DA10
WIKA
Wika Differential pressure switch, Models DA, DA10
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Differential Pressure Sensor - DPGT40
WIKA
Wika Differential pressure sensor, Model DPGT40
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Differential Pressure Sensor - A2G-45
WIKA
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Diaphragm Pressure Switch - MW
WIKA
Wika Diaphragm pressure switch, Model MW
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Diaphragm Pressure Switch - MA
WIKA
Wika Diaphragm pressure switch, Model MA
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Compact Differential Pressure Switch - DE, DEC
WIKA
Wika Compact differential pressure switch, Models DE, DEC
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Bourdon Tube Pressure Switch - BWX
WIKA
Wika Bourdon tube pressure switch, Model BWX
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Bourdon Tube Pressure Switch - BA, BAX
WIKA
Wika Bourdon tube pressure switch, Models BA, BAX
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Absolute Pressure Switch - APW, APW10
WIKA
Wika Absolute pressure switch, Models APW, APW10
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Absolute Pressure Switch - APA, APA10
WIKA
Wika Absolute pressure switch, Models APA, APA10
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910 Pressure Snubbers
WIKA
WIKA 910 Piston Pressure Snubber
$258.41 USD
800/810 Series Pressure Transmitter & Switch
Noshok
Noshok Industrial Pressure Transmitter & Switch, 800/810 Series
from $240.84 USD
6905GZE-7042 Series Pressure Switch
Custom Control Sensors
CCS6900GZE
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6900PE Series Pressure Switch
Custom Control Sensors
6900PE34 Front
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6900P Series Pressure Switch
Custom Control Sensors
6900G12 Front
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6900GZEK Series Pressure Switch
Custom Control Sensors
6900GZEKFront
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6900GZE-7066 Series Pressure Switch
Custom Control Sensors
6900GZE12-7066 Front
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6900GZE Series Pressure Switch
Custom Control Sensors
6900GZE Series Pressure Switch
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6900GZ Series Pressure Switch
Custom Control Sensors
6900G12 Front
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6900GEK Series Pressure Switch
Custom Control Sensors
Custom Control Sensors Pressure Switch, 6900GEK Series
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6900GE Series Pressure Switch
Custom Control Sensors
6900GE12 Front
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6900GCZZE5Y Series Pressure Switch
Custom Control Sensors
6900G12 Front
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6900G Series Pressure Switch
Custom Control Sensors
6900G12 Front
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6900DZE Series Pressure Switch
Custom Control Sensors
Custom Control Sensors Pressure Switch, 6900DZE Series
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6900DZ Series Pressure Switch
Custom Control Sensors
6900DZE
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6862G Series Pressure Switch
Custom Control Sensors
6862G
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6860G Series Pressure Switch
Custom Control Sensors
6862G
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675VE8000 Series Pressure Switch
Custom Control Sensors
675VE8Front
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Highly Reliable and Durable
 

Pressure switches are precision instruments designed to maintain, monitor, and manage the pressure levels within industrial systems. By monitoring and responding to pressure changes, pressure switches help automate processes, ensure safety, and protect equipment from damage due to abnormal pressure conditions. Whether mechanical or electronic, pressure switches provide reliable and cost-effective pressure control, making them indispensable components in numerous systems.

The pressure switches sensing element, which could be a diaphragm, piston, bellows, or Bourdon tube, is exposed to the system's fluid pressure, as the pressure changes, the sensing element moves or deforms in response to the pressure differential. The switch has an adjustable setpoint mechanism, usually a spring and screw, which allows the user to set the pressure level at which the switch will activate or deactivate. This setpoint defines the pressure at which the electrical contacts within the switch will change state (either open or close). The electrical contacts are the components that open or close the circuit when the pressure reaches the setpoint. The switch can be configured as normally open (NO) or normally closed (NC), depending on whether it completes or interrupts a circuit when the set pressure is reached. When the pressure reaches the setpoint, the force exerted on the sensing element causes the switch's internal mechanism to actuate the electrical contacts, either opening or closing them to control the connected device or system.

Mechanical pressure switches operate based on mechanical movement of the pressure sensing element, typically using springs, diaphragms, or pistons to actuate the switch contacts. Mechanical pressure switches are suitable for many standard applications due to their reliability and simplicity. Electronic pressure switches use electronic sensors (such as piezoelectric or strain gauge sensors) to detect pressure changes, and provide more precise control and can offer features like digital displays, programmable setpoints, and remote monitoring. They are ideal for applications requiring high accuracy, frequent switching, or integration into digital control systems. Differential pressure switches monitor the difference in pressure between two points in a system and are used in applications like filter monitoring or leak detection, where the pressure differential between two points is critical.

Pressure switches are used to automatically start or stop pumps or compressors based on the system's pressure. For example, a pressure switch in a water pump system will turn the pump on when pressure drops below a certain point and off when it reaches the desired level. Pressure switches provide safety functions by activating alarms or shutting down equipment when pressures exceed or fall below safe operating limits, protecting both equipment and personnel. In heating, ventilation, and air conditioning (HVAC) systems, pressure switches monitor refrigerant or air pressures to control compressors, fans, and other components, ensuring efficient operation and preventing damage. Pressure switches can detect a pressure drop across filters in air or fluid systems, indicating that the filter is clogged and needs replacement or cleaning. Pressure switches are used in hydraulic and pneumatic systems to control actuators, motors, or valves, ensuring proper pressure is maintained for smooth and efficient operation. The are very useful in various industrial process control industries, such as chemical, oil and gas, and food processing, to maintain pressure levels within safe and optimal ranges for different stages of production.

Mechanical pressure switches have many advantages, as they are robust and have few moving parts, making them reliable for many applications with minimal maintenance. Pressure switches are generally more affordable than more complex pressure sensors or transmitters, making them suitable for basic control or safety applications. Pressure switches can be used in a wide range of applications and industries, from HVAC and water systems to heavy industrial processes. The setpoints are adjustable, allowing users to customize the pressure levels at which the switch activates or deactivates according to specific operational requirements.