Value Engineered Products manufactures eight series of pressure switches. The company's most popular line is its 670 Series, which features a 1 1/8 square body and are constructed of aluminum or stainless steel. The switches also range in pressure from 1.5 psig to 400 psig.

Wasco Inc. manufactures standard, super purity, ultra high-purity, economical, and high, low and dual pressure switches. The company's miniature switches are in the 1 to 500 psi range, or 1 to 100 psi range.

SOR Inc. designs and manufactures a number of pressure switches including: weather proof, explosion proof, hermetically sealed, miniature hermetically sealed, adjustable deadband, subminiature hermetically sealed, pivot seal, electronic, and bourdon tube pressure switches.

Barksdale Inc. is a manufacturer diaphragm, dia-seal piston, sealed piston, bourdon tube, vacuum, and differential-type pressure switches. The diaphragm pressure switches are available as single, dual and triple setting units, with pressure up to 150 psi. The dia-seal piston pressure switches feature pressures up to 1600 psi, while the sealed piston pressure switches are for use in rugged hydraulic applications. Bourdon tube pressure switches are used for high pressure applications up to 18,000 psi. The differential switch models are for applications where there are fewer than 25 cycles per minute.

MAMCO Precision Switches manufactures air compressor, water pump, standard and differential pressure switches. The company's standard and differential pressure switches are used for a variety of OEM applications and have the ability to operate in harsh environments at various pressures.

Sensata Technologies Inc. manufactures manual reset pressure switches and automatic reset pressure switches for HVAC/R, commercial and industrial applications. Suitable for harsh environments, the company's Klixon-brand pressure switches are hermetic and feature low and high contact capacities.

Whitman Controls Corp. manufactures preset and field adjustable pressure switches. The company's switches are used for process machine, medical equipment, machine tool, instrumentation, laboratory, clean room, power supply, pneumatic/hydraulic, silicon wafer, marine engine, over/under pressure alarm, pool, spas, pump, and compressor applications.

Sigma-Netics Inc. manufactures three series of industrial pressure switches that feature either fixed pressure or adjustable pressure. Depending on type - piston, diaphragm, pressure or vacuum - the switches feature pressure ranges of 3 to 125 psi, 6 to 5000 psi, 8 to 6000 psi, or 25 to 6000 psi.

ITT Neodyn manufactures low pressure switches, high pressure switches, and pneumatic pressure switches for weather-proof and explosion-proof applications. The company's line of pressure switches including general purpose and hazardous area-types. The general purpose pressure switches are intended for hydraulic system pressures up to 10,000 psig, depending on switch model.