R. Stahl Inc. supplies explosion-proof control switches and signaling stations that meet Class 1, Zone 1 & 2; and Class 1, Div. 2 certifications. The explosion-proof control stations are available in polyester resin, sheet steel or stainless steel.

SOR Inc. designs and manufactures explosion-proof pressure switches that feature ranges from 30inHg vacuum to 7000 psi. The field-mounted switch units also feature cast iron, aluminum or copper-free aluminum construction.

Allied Electronics distributes a variety of explosion-proof switches manufactured by Honeywell/Microswitch, Tyco Electronics and Schurter. The company also stocks several explosion-proof switches manufactured by Pepperl + Fuchs, Macromatic, Linemaster, Flowline, and Energizer.

B&B Instruments stocks and distributes explosion-proof pressure switches and explosion-proof temperature switches. The pressure switches are available with range up to 7,500 psig and diaphragm, dia-seal piston, bourdon tube, or sealed piston sensors. The temperature switches feature a range from -50 up to 600F, with remote bulb or local bulb sensors.

Bermad Inc. designs and manufactures explosion-proof pressure switches that feature stainless steel construction, a mechanical contact lifecycle of 10 million cycles, and 1/2" NPT end connections. The switches are used in chemical plant, refinery, gas and petroleum installation, and offshore and marine vessel applications.

Davis Instruments distributes explosion-proof pressure switches and explosion-proof vacuum switches manufactured by United Electric, along with Ashcroft-brand explosion-proof switches.

Kinetrol USA manufactures explosion-proof limit switches that feature a compact, corrosion-resistant aluminum alloy housing. Internally fitted options include AS interface digital communication and a 4-20mA, 2-wire modulating angle retransmit circuit. The switches also feature an ambient operating temperature of -40C to 80C.

Orange Research manufactures explosion-proof differential pressure switches that feature ratings of 125 VAC or 120 VAC, and one or two switches. The various switches meet Nema-4x, Class l, UL, CSA, CE or ATEX ratings.