Pressure switches

162 companies | 677 products
Digital pressure switch / for liquids

This is an electronic switch that comes...

Steam pressure switch

The BCP, Pressure controller/ Pressure limiter are dedicated pressure...

Differential pressure switch / for steam / adjustable

RT switches are often utilized in both the marine...

Differential pressure switch / for steam

A number of control options are available...

Membrane pressure switch / for air

Diaphragm pressure switches with micro switch (silicone-free)...

Membrane pressure switch / for air

The Diaphragm pressure switch comes with micro...

Membrane pressure switch / for gas

Diaphragm pressure switches with micro switch (silicone-free)...

Membrane pressure switch / for gas

The silicone free micro switch switches...

Gas pressure switch / for liquids

Applications Pressure monitoring and direct...

Membrane pressure switch / for gas / for liquids / stainless steel

Pressure monitoring and direct switching of electrical...

With digital display / high-precision

The Series ISE30 high precision...

Inflatable boat pressure switch

SMC created IS3000,...

Centralized lubrication unit pressure switch

Typically, pressure switches can be used...

Digital pressure switch / for centralized lubrication unit

The analogue pressure gauge visually checks the...

Modular pressure switch

Skillair® pressure switches represent...

Differential pressure switch

The digital pressure switch is provided...

Membrane pressure switch / compact / OEM

The PS31 Pressure Switch,...

Membrane pressure switch / miniature

This pressure switch is part of the PS41...

Piston pressure switch / OEM

These subminiature pressure...

Compact pressure switch / hydraulic / OEM

These compact pressure...

Adjustable pressure switch

Rexroth pressure switches, Series PM1 are useful for relative pressure...

Compact pressure switch

The Ceraphant T PTP31 is a pressure switch...

Membrane pressure switch

The Ceraphant T PTP35 by ENDRESS+HAUSER is designed...

The PS2000W Series, manufactured...

The PS2100W Series, manufactured...

The PSA2000W series...

Adjustable pressure switch

The PSA2100W Series...

How to choose this product

pressure-switch

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.

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