Ashcroft Inc. offers a line of pressure switches with various enclosures, switch functions, wetted materials and set points. Enclosure types include watertight or explosion proof, brass body, stainless steel body, epoxy coated aluminum, and anodized aluminum. Pressure switch models include general purpose pressure switches, compact pressure switches, hydraulic pressure switches, high performance pressure switches and electronic pressure switches.

Cole-Parmer delivers a big selection of pressure and vacuum instruments. Their line of pressure switches includes: Ashcroft Type A pressure switches; Cole-Parmer compact pressure/vacuum switches; Cole-Parmer economical pressure/vacuum switches; Dwyer Photohelic differential pressure gauges/switches; industrial vacuum, pressure and differential pressure switches; and subminiature pressure switches.

Dan Foss provides pressure switches with high grade enclosures for light, heavy, wet and dusty industrial applications. Catalog of pressure switches includes single, dual and pressure switches such as the RT pressure switch for land and sea applications, BCP pressure switches for industrial boiler applications, KP/KPI pressure switches for gaseous and liquid media and MBC pressure switches for marine and hydraulic applications.

ITT Aerospace Controls offers general purpose and hazardous area switched with NEMA standards. The Neo-Dyn switches utilize a negative rate Bellevill spring snap acting device, resist vibration and are capable of over-pressure. They feature great set point stability and long cycle life.

Sensata Technologies makes pressure sensors including ceramic and hermetic models for HVAC/R and industrial use including combined pressure and temperature models for applications requiring a double duty sensor. They also make pressure switches such as automatic reset, manual reset, and vacuum models.

Sigma-Netics offers several pressure sensing instruments including switches, bellows, hydraulic switches, air pressure switches and more. Their industrial pressure switches come with factory set or adjustable pressure and are explosion proof with varying standard connections.

Transducers Direct offers transducers and switches, with their pressure transducers featuring models with 2 or 4 times over pressure, 0-4000PSI range, cable out, 6 pin bendix electrical connection, and 0.1 to 10V output.

United Electric Controls makes general purpose, hazardous location, and OEM pressure, differential pressure, and temperature switches including their 54 series pressure switch with NEMA 1 or open frame construction and SPDT or dual switch outputs.