Pressure switches

How to choose this product

A pressure switch controls and adjusts a hydraulic or pneumatic system. It reacts to a pressure threshold or setpoint. Activating an on-off output, such as a dry contact, directly governs a mechanism which reestablishes the desired pressure.

Applications

These devices are found in process control, for compressor or pump operation, in chemistry, automobiles, agribusiness, the energy industry, hydraulics, construction, refrigeration units and in oil and natural gas installations.

Technologies

Relative or absolute pressure gas, vapor or liquid switches have a single input. Differential models have two inputs. Such switches can be mechanical or electronic.

Mechanical switches use a diaphragm, a piston or a Bourdon tube. The output contact may be normally open (NO) or normally closed (NC). A calibration screw is used to adjust the setpoint. Hysteresis parameters are set by the manufacturer or are adjustable.

Electronic switches also act as pressure transmitters. They use strain gauge, capacitive, inductive or piezoelectric measurement methods. Setpoints are programmable; readings are transmitted by two-wire, four-20 mA current loop or a three-wire 0-10 V arrangement. They are temperature-compensated and more precise.

How to choose

Choice will depend on the switch's working pressure and adjustment ranges, hysteresis, ability to withstand excess pressure and degree of protection.

329 companies | 1748 industrial products

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18 products SUCO VSE
AFRISO-EURO-INDEX max. 4 bar | DS 01
Adjustable differential max. 4 bar | DS 01 AFRISO-EURO-INDEX

This unit is suited for use in the application of practical media such as heating...

new AFRISO-EURO-INDEX max. 12 bar, -5 °C ... +90 °C | HMG 10
Hand-held digital differential pressure manometer max. 12 bar, -5 °C ... +90 °C | HMG 10 AFRISO-EURO-INDEX

This tool specializes in lightning-fast hydraulic balancing at the radiator with VarioQ...

new AFRISO-EURO-INDEX max. 12 bar, -10 °C ... +90 °C | HMG 100
Hand-held digital differential pressure manometer max. 12 bar, -10 °C ... +90 °C | HMG 100 AFRISO-EURO-INDEX

Lightning-fast hydraulic balancing at the radiator with VarioQ valves Software-supported...

Danfoss Industrial Automation BCP
For steam BCP Danfoss Industrial Automation

BCP, Pressure controller/ Pressure limiter The BCP type is a series of dedicated pressure switches for safety and pressure monitoring of steam and hot water boilers. The BCP incorporates a single-pole...

Danfoss Industrial Automation RT
RT Danfoss Industrial Automation

RT switches are often utilized in both the marine and industrial sectors and has been in service for more than 60 years. To continue, this top of the line RT single pressure switches...

Danfoss Industrial Automation RT TÜV
For steam RT TÜV Danfoss Industrial Automation

RT, Pressure switches, TÜV approved for steam plant TÜV appoved RT switches are used in steam plant. The RT single pressure switches series consist of a variety of ordinary...

Danfoss Industrial Automation IP67 | KPS
Rugged IP67 | KPS Danfoss Industrial Automation

KPS, Heavy-duty pressure switches In the KPS series, special attention has been given to meeting important demands for a high level of enclosure, a robust, compact construction and resistance to...

Danfoss Industrial Automation IP67 | CAS
Rugged IP67 | CAS Danfoss Industrial Automation

CAS, Heavy-duty pressure switches In the CAS pressure switches series, special attention has been given to meeting demands for a high level of enclosure, low differential, robust, compact construction...

Danfoss Industrial Automation KP
For gas KP Danfoss Industrial Automation

KP, Pressure switches for light industry Danfoss KP pressure switches are used for regulating, monitoring and alarm systems in industrial applications. The KP series are...

Elster Kromschröder 0.4 - 500 mbar | DG series
For gas 0.4 - 500 mbar | DG series Elster Kromschröder

Diaphragm pressure switches with micro switch (silicone-free) for monitoring gas pressures on industrial installations, for...

Elster Kromschröder 2 - 360 mbar | DG..C series
For gas 2 - 360 mbar | DG..C series Elster Kromschröder

Diaphragm pressure switches with micro switch (silicone-free) for monitoring gas pressures on boilers, for positive pressure, for gas, also suitable for biologically produced methane, switching point...

Elster Kromschröder 20 - 400 Pa | CPS series
Diaphragm 20 - 400 Pa | CPS series Elster Kromschröder

Diaphragm pressure switches with micro switch (silicone-free versions available) for monitoring air pressures on air-conditioning, ventilation and extraction systems, for...

Elster Kromschröder 0.2 - 150 mbar | DL..A series
Diaphragm 0.2 - 150 mbar | DL..A series Elster Kromschröder

Diaphragm pressure switches with micro switch (silicone-free) for monitoring air pressures on industrial and commercial installations, for positive pressure, negative pressure and differential pressure,...

Elster Kromschröder 0.2 - 50 mbar | DL..E series
Diaphragm 0.2 - 50 mbar | DL..E series Elster Kromschröder

The Elster DL..E pressure switches for air series are diaphragm pressure switches for monitoring air pressures on industrial and commercial installations; for positive, negative...

Elster Kromschröder 0.2 - 150 mbar | DL..K series
Diaphragm 0.2 - 150 mbar | DL..K series Elster Kromschröder

The Diaphragm pressure switch comes with micro switch intended for regulating and monitoring air pressures on industrial/commercial fittings. The micro switch may come in silicone-free...

Honeywell Sensing and Control Hobbs
Pressure / vacuum switch Hobbs Honeywell Sensing and Control

Pressure Switches Better under pressure. For years, manufacturers and operators of heavy-duty equipment have trusted Honeywell pressure and vacuum...

Honeywell Sensing and Control HP, HE, LP, LE Series
HP, HE, LP, LE Series Honeywell Sensing and Control

Durable, reliable electromechanical gauge pressure on/off switches available with either single pole single throw (SPST) normally open or normally closed circuitry, or single pole double throw (SPDT)...

16 products KIMO
KIMO -10 000 ... 10 000 Pa, -2 000 ... 2 000 mbar | PST
-10 000 ... 10 000 Pa, -2 000 ... 2 000 mbar | PST KIMO

This line of sensors have ABS housing (IP 65 protection), a 10-digit LCD display...

KIMO 500 mmCE, 670 mbar | GF series
Liquid column manometer: U-tube manometer 500 mmCE, 670 mbar | GF series KIMO

Applications : checking pressures in gas networks within measurement ranges which vary according to the type of manometric liquid used : VF 1 or MERCURY. Measurement...

KIMO 0 - 60 mbar | KM series
Liquid column manometer: U-tube manometer 0 - 60 mbar | KM series KIMO

Applications : low pressures in gas networks. Measurement range : 0-45 mbar (or 0-18 inWG), 0-60 mbar (or 0-24 inWG). Technical...

KIMO 870 mmCE, 620 mbar | LU series
Liquid column manometer: U-tube manometer 870 mmCE, 620 mbar | LU series KIMO

Applications : measuring variations of pressure, depression or differential pressure of air or gas within measurement ranges which vary according to the type of manometric liquid used : AWS 10, VOLT 1S...

KIMO 2 150 mmCE, 1 550 mbar | TJ series
Liquid column manometer: U-tube manometer 2 150 mmCE, 1 550 mbar | TJ series KIMO

Applications : measuring variations of pressure, depression or differential pressure of air or gas within measurement ranges which vary according to the type of manometric liquid...

KIMO 0 - 25 mmCE | CP 25
Liquid column manometer: inclined tube pressure gauge 0 - 25 mmCE | CP 25 KIMO

Applications : Measure of slight variations in pressure, depression or differential pressure of air or gas. It...

GEMS SENSORS & CONTROLS
GEMS SENSORS & CONTROLS

A choice of pressure switch devices and proximity sensor units are offered by GEMS. They have compact cylindrical models that is use for OEM to a larger one, it is...

GEMS SENSORS & CONTROLS IP66, 0.345 - 20 bar | PS31 series
Diaphragm IP66, 0.345 - 20 bar | PS31 series GEMS SENSORS & CONTROLS

The PS31 Pressure Switch, formerly the PMLA Model, is recommended for low temperature Pneumatic...

GEMS SENSORS & CONTROLS IP65, 0.2 - 7 bar | PS41 series
Compact IP65, 0.2 - 7 bar | PS41 series GEMS SENSORS & CONTROLS

PS41 Series Pressure Switch Economical Miniature Pressure Switches PS41 Series Pressure Switch Quick Specs... * 3.5 to 100...

WIKA Alexander Wiegand SE & Co. KG PSM02
Compact PSM02 WIKA Alexander Wiegand SE & Co. KG

Presenting the latest Model PSM02 OEM compact pressure switch. Designed with two adjustment screws...

WIKA Alexander Wiegand SE & Co. KG 0 - 25 mbar | PGS43.100, PGS43.160
Diaphragm operated differential pressure gauge with switch 0 - 25 mbar | PGS43.100, PGS43.160 WIKA Alexander Wiegand SE & Co. KG

Applications - Control and regulation of industrial processes at measuring points with increased overpressure and scale ranges from 0 25 mbar - Monitoring of plants and switching of electric circuits -...

WIKA Alexander Wiegand SE & Co. KG DG-10
Digital pressure gauge DG-10 WIKA Alexander Wiegand SE & Co. KG

This digital pressure gauge may be used in service tasks and...

WIKA Alexander Wiegand SE & Co. KG 910.15
Pressure gauge siphon 910.15 WIKA Alexander Wiegand SE & Co. KG

Applications -Syphons protect pressure measuring instruments from pulsations in the medium and from excessive heating -Cooling element...

WIKA Alexander Wiegand SE & Co. KG MFT
Dial thermometer and manometer MFT WIKA Alexander Wiegand SE & Co. KG

This thermomanometer and can measure both pressure and temperature simultaneously,...

SKF Lubrication Systems Germany AG DSB series
For centralized lubrication unit DSB series SKF Lubrication Systems Germany AG

The cutting edge DSB1 pressure switch is highly suitable for monitoring centralized lubrication systems. Unlike traditional pressure switches that are mounted in a branching off...

SKF Lubrication Systems Germany AG DSC series
Electronic for centralized lubrication unit DSC series SKF Lubrication Systems Germany AG

Measurement and inspection of the pressure in centralized lubrication systems is one of the most important issues when evaluating how efficiently a system is operating. Changes and fluctuations in...

SKF Lubrication Systems Germany AG DSA series
For centralized lubrication unit DSA series SKF Lubrication Systems Germany AG

Pressure switches are used for automatic monitoring. In contrast to pressure gauges with analogue displays, only one signal is displayed when a specific pressure value...

1 products ifm electronic
ifm electronic max. 25 bar | PG series
Electronic with display max. 25 bar | PG series ifm electronic

Now available with conical G1 process connection. Optimum legibility due to the electronic pointer display. Rotatable display with LED bargraph for switch point indication. Optionally trend...

3 products ASCO
ASCO max. 250 psi | J series
Miniature pressure / vacuum switch max. 250 psi | J series ASCO

Features: Tamperproof, factory-set, non-adjustable set points. Fixed deadband. Environmentally sealed against dust, water, oil and salt spray, e.g., for off-highway equipment....

ASCO max. 250 psi | H series
Adjustable diaphragm max. 250 psi | H series ASCO

Features: Field adjustable set points. Fixed deadband. Choice of open frame type, general purpose or watetight enclosure. Small size. Mounts in any position. Rugged and vibration resistant, e.g.,...

ASCO max. 6 000 psi | P series
Compact max. 6 000 psi | P series ASCO

Set point repeatability, +1% of operating range. All wiring terminals, adjustments and visual scales are accessible from the front of the switch. Choice of open frame type,...

new SMC Corporation of America ISE/ZSE30A series
With digital display ISE/ZSE30A series SMC Corporation of America

Digital pressure switches monitor positive and vacuum pressures, displaying instantaneous readings, as well as transmitting output signals when critical set points are detected. Switch outputs can trigger...

SMC Corporation of America ISE40A series
With digital display ISE40A series SMC Corporation of America

The ISE40A series is a digital pressure switch that provides incredible precision and...

SMC Corporation of America PSE300 series
With digital display PSE300 series SMC Corporation of America

The PSE series of digital pressure switches comprises various items that allow full pressure control, even from remote...

SMC Corporation of America ZSE80 series
Digital pressure / vacuum switch ZSE80 series SMC Corporation of America

The ZSE80 2-Color Display Digital Pressure Switch for Vacuum is a one of a kind product developed by SMC. It features 2 color indication and the option...

SMC Corporation of America max. 1 000 MPa | ISE10 series
Digital pressure gauge/switch max. 1 000 MPa | ISE10 series SMC Corporation of America

ZSE10/ISE10 compact, digital pressure switch has been reduced in height by...

SMC Corporation of America max. 1.5 MPa | ISE30A series
With digital display max. 1.5 MPa | ISE30A series SMC Corporation of America

Series ISE30 high precision digital pressure switch (for positive pressure)...

31 products DWYER
DWYER ATEX, IP66 | Photohelic®AT23000MR/3000MRS
Diaphragm operated differential pressure gauge with switch ATEX, IP66 | Photohelic®AT23000MR/3000MRS DWYER

Using solid state technology, the Series AT23000MR and AT23000MRS ATEX Approved Photohelic® Switch/Gages combine the functions of a precise, highly repeatable differential pressure switch with a large...

DWYER Photohelic® 3000MR/3000MRS series
Diaphragm operated differential pressure gauge with switch Photohelic® 3000MR/3000MRS series DWYER

Using solid state technology, the Series 3000MR and 3000MRS Photohelic® switch/gages combine the functions of a precise, highly repeatable differential pressure switch with a large easy-to-read analog...

DWYER Capsu-Photohelic® 43000 series
Capsule differential pressure gauge with switch Capsu-Photohelic® 43000 series DWYER

Capsu-Photohelic® Switch/Gages function as versatile, highly repeatable pressure switches combined with a precise pressure gage employing the time-proven Magnehelic® gage design. The Capsu-Photohelic®...

DWYER ATEX, IP66 | Digihelic® AT2DH3 series
Explosion-proof digital pressure gauge/switch ATEX, IP66 | Digihelic® AT2DH3 series DWYER

The AT2DH3 by Digihelic is a differential pressure controller approved by ATEX. At the same time, it is also a three-in-one instrument processing device. Users can use it as a digital...

DWYER Digihelic® DH series
Digital pressure gauge/switch Digihelic® DH series DWYER

Is a 3 in 1 instrument possessing a digital display gage, control relay switches, and a transmitter with current output. Combining these 3 features allows the reduction of several instruments with one...

DWYER ATEX, IP66 | AT11910
Explosionproof differential ATEX, IP66 | AT11910 DWYER

The Series AT11910 is created as ATEX Approved 1910 Differential Pressure Switch, designed and develop by DWYER. It is made more durable and highly efficient...

33 products SUCO
SUCO max. 42 V, max. 600 bar | 0163
Diaphragm max. 42 V, max. 600 bar | 0163 SUCO

The pressure switch 24 consists of a diaphragm pressure switch 0163. It...

SUCO max. 42 V, max. 35 bar | 0167
Diaphragm max. 42 V, max. 35 bar | 0167 SUCO

The Diaphragm pressure switch 0167 have a normally closed or normally open...

SUCO max. 42 V, max. 300 bar | 0110
Plugin diaphragm max. 42 V, max. 300 bar | 0110 SUCO

Normally Closed or Normally Open, max....

SUCO max. 42 V, max. 600 bar | 0111
Plugin piston max. 42 V, max. 600 bar | 0111 SUCO

The Druckschalter SW 24 mit integriertem Stecker Kolbendruckschalter 0111...

SUCO max. 42 V, max. 300 bar | 0112
Plugin diaphragm max. 42 V, max. 300 bar | 0112 SUCO

The Piston pressure switches 0112 have a usually closed or normally...

SUCO max. 42 V, max. 600 bar | 0113
Plugin piston max. 42 V, max. 600 bar | 0113 SUCO

The Druckschalter SW 24 mit integriertem Stecker Kolbendruckschalter 0113 switches...

58 products ASHCROFT
new ASHCROFT max. 7 500 psi | A series
Miniature pressure / vacuum switch max. 7 500 psi | A series ASHCROFT

Compact Size 316 Stainless Steel Construction Pressure ranges from Vacuum to 7,500 psi Field Adjustable Set Point or Factory Set Only Wide Operating Temperature Range (-40°C to 100°C) Precision...

ASHCROFT max. 7 500 psi | A series
Explosionproof diaphragm max. 7 500 psi | A series ASHCROFT

The ASHCROFT A-Series Miniature Explosion Proof Pressure Switch is designed and develop as pressure switches for pressure alarm, shutdown, or control in hazardous...

ASHCROFT max. 1 000 psi | A-N4 series
Miniature pressure / vacuum switch max. 1 000 psi | A-N4 series ASHCROFT

A Series miniature watertight pressure switches or our A Series miniature explosion proof switches Wide variety of electrical connections including spade, screw, and DIN Rugged...

ASHCROFT max. 2 000 psi | A series
Miniature pressure / vacuum switch max. 2 000 psi | A series ASHCROFT

We offer our top products known as the A series miniature watertight pressure switches and the A Series miniature explosion proof switches. Products are generally made of stainless...

ASHCROFT max. 3 000 psi | B400
Adjustable diaphragm max. 3 000 psi | B400 ASHCROFT

This series of switches was designed by Ashcroft for various industrial and OEM applications, so if users are running such a project,...

ASHCROFT max. 3 000 psi | B700
Explosionproof max. 3 000 psi | B700 ASHCROFT

This broad Ashcroft® switch series is ideal for use in virtually all process and industrial applications. Explosion-proof NEMA 7/9, IP66 enclosure (explosion-proof enclosure Class I, Div. 1 &...

Telemecanique Sensors max. 500 bar | XMLA series
Differential max. 500 bar | XMLA series Telemecanique Sensors

For controlling air, fresh water, sea water, hydraulic oils, corrosive fluids and viscous products -1...

Telemecanique Sensors max. 25 bar | XMX - XMA series
Adjustable differential max. 25 bar | XMX - XMA series Telemecanique Sensors

For controlling air, fresh water, sea water, hydraulic oils, corrosive fluids and viscous products -1...

Telemecanique Sensors 0.01 - 620 bar | 9012G series
Electromechanical 0.01 - 620 bar | 9012G series Telemecanique Sensors

The Square D 9012 pressure switches are control circuit rated devices used in pneumatic or hydraulic...

Telemecanique Sensors 3 - 25 inHg | 9016 series
Pressure / vacuum switch 3 - 25 inHg | 9016 series Telemecanique Sensors

The manufacturer has designed a complete line of electromechanical vacuum switches, suitable for use with applications...

Telemecanique Sensors max. 17.24 bar | 9013 series
Water pump max. 17.24 bar | 9013 series Telemecanique Sensors

The 9013 F and G power pressure switches are ideally suited for utilization as...

Honeywell Environmental & Combustion Controls EMEA -20 - 100 °C | SmartPress
Electronic -20 - 100 °C | SmartPress Honeywell Environmental & Combustion Controls EMEA

Electronic Pressure switch, with LCD display for the field of plant construction, fluidics, process technology, and pneumatics, as well as in the monitoring and control of pumps and compressors. Models...

Honeywell Environmental & Combustion Controls EMEA -20 - 100 °C
Electronic with display -20 - 100 °C Honeywell Environmental & Combustion Controls EMEA

Protection class IP65 Housing material Polybutylene terephtalate (PBT) Media temp. -20 ... 100 oC Media temp. limit Higher temperatures are possible, provided that the limit is safeguarded by suitable...

Honeywell Environmental & Combustion Controls EMEA -20 - 80 °C | Smart DCM
Electronic with display -20 - 80 °C | Smart DCM Honeywell Environmental & Combustion Controls EMEA

Electronic Pressure Switches are microprocessor-controlled pressure measurement devices for relative pressures of -1 to +1 bar and 0 to 40 bar. They are suitable...

Honeywell Environmental & Combustion Controls EMEA -20 - 80 °C
Electronic differential -20 - 80 °C Honeywell Environmental & Combustion Controls EMEA

Smart-dcm-diff-ge51 Electronic Differential Pressure Switches are microprocessor-controlled pressure measurement devices for a differential pressure range of 0 ... 20 bar. They are suitable for an extremely...

Honeywell Environmental & Combustion Controls EMEA -25 - 70 °C
For gas -25 - 70 °C Honeywell Environmental & Combustion Controls EMEA

Kind of pressure overpressure, relative Pressure connection internal thread G1/4, external thread G1/2 Electrical connection Plug DIN EN 175301 Protection class IP54 Housing material rugged housing...

Honeywell Environmental & Combustion Controls EMEA -15 - 60 °C | DCM
For gas -15 - 60 °C | DCM Honeywell Environmental & Combustion Controls EMEA

Kind of pressure overpressure, relative Pressure connection internal thread G1/4, external thread G1/2 Electrical connection Plug DIN EN 175301 Protection class IP54 Housing material rugged housing...

DANFOSS Refrigeration & Air Conditioning -40 ... +65 °C, max. 46.5 bar | KP series
-40 ... +65 °C, max. 46.5 bar | KP series DANFOSS Refrigeration & Air Conditioning

KP pressure controls are for use in refrigeration and air conditioning systems to give protection...

DANFOSS Refrigeration & Air Conditioning -50 ... +70 °C, IP 66 | RT-E series
-50 ... +70 °C, IP 66 | RT-E series DANFOSS Refrigeration & Air Conditioning

RT pressure controls contain a pressure operated single-pole changeover...

DANFOSS Refrigeration & Air Conditioning max. 22 bar | MP series
Differential max. 22 bar | MP series DANFOSS Refrigeration & Air Conditioning

MP 54 and MP 55 oil differential pressure controls are used as sefety...

DANFOSS Refrigeration & Air Conditioning 33 bar | FTB/HTB series
Highprecision 33 bar | FTB/HTB series DANFOSS Refrigeration & Air Conditioning

The TB pressure control series is four types of SPDT pressure switches in a compact design and capable of making minor adjustments to factory settings....

DANFOSS Refrigeration & Air Conditioning max. 37.5 bar | CFE series
With digital display max. 37.5 bar | CFE series DANFOSS Refrigeration & Air Conditioning

CFE is a digital pressure control designed to stop the compressor if max. or min. pressures are exceeded in the refrigeration system. CFE can also be applied to preempt...

2 products JUMO
JUMO 0 - 60 bar | JUMO DELOS SI
Electronic with display 0 - 60 bar | JUMO DELOS SI JUMO

0 160 bar to 0 600 bar relative Measuring range scaling 1:4 Process-reliability accuracy from 0.15 % of the nominal-value...

JUMO 96 x 48 mm, PROFIBUS-DP | JUMO di 308
Digital pressure indicator 96 x 48 mm, PROFIBUS-DP | JUMO di 308 JUMO

The JUMO di 308 display instrument displays temperatures in °C or °F and standard signals in „plain text“. The basic device is already equipped with one analog input, two binary inputs, two relay outputs,...

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Associated Terms

pressure contactors, industrial pressure switches

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