Grainger Industrial Supply offers MERCOID explosion/weather proof pressure switches. Switches have inlets ranging from 1/4 to 1/2 FNPT, pressure ranges from 5 to 1200 PSI, horse power up to 1/4 HP, NEMA 4X enclosures, and temperature ranges from -30 to 180°F.

Ashcroft, Inc. offers pressure and differential pressure switches. Pressure switches have setpoints ranging from 1,000 to 20,000 PSI, and differential pressure switches have PSID ranges from 400 to 600. Switches are constructed from the following materials: stainless steel, Viton, Buna, Monel, Teflon, etc. Switches have the following enclosure configurations: explosion proof, watertight, NEMA Type 7/4X/9, IP66, etc. Switch function options include: single setpoint, fixed deadband, SPDT, field adjustable, etc.

SOR, Inc. offers explosion proof and explosion proof hermetically sealed pressure switches (pressure/vacuum/compound). Switches range from 30" Hg vacuum to 7000 PSI, they are hostile environment resistant, and they are UL/CSA certified. These switches are able to provide set point adjustments with a calibrated scale, and without declassification of hazardous areas. Switches are constructed from aluminum, copper-free aluminum, cast iron, and steel materials.

Dwyer Instruments, Inc. offers Series H2 dual-action and 1000E diaphragm operated explosion proof pressure switches. Switch features include: pressure ranges to 1400 PSI, fixed deadband, visible set point, weatherproof/explosion-proof housing, unaffected by vibration, versatile mounting options, etc. Switches are UL listed for Class I & II and Groups A-D.

HYDAC International offers Series HDA 4000 pressure transducers and EDS 410 Series factory set pressure switches for off-road, OEM, transit, mobile, and industrial applications. Switches are available with the following features: pressure ranges from 100 to 10000 PSI, a current consumption of 1.2 Amps, 1-2 switching outputs, explosion-proof/solid stainless steel housings, moisture/shock/vibration protection, etc.

Thorco Holdings, LLC offers a wide variety of pressure switches, including: general purpose, industrial, Tri-Clamp process connection, compact factory set/tamperproof, special application, low pressure/vacuum, etc. Switches have adjustable ranges from 1 to 10,000 PSIG, SPDT/DPDT electrical forms, and various NEMA enclosures. Switches are constructed from the following materials: stainless steel, aluminum, Monel, Hastelloy, Titanium, Inconel, and Polymide. Switches are ideal for hydraulic, bio-chemical, pharmaceutical, and sanitary applications.

United Electric Controls offers explosion-proof electronic pressure switches in a variety of configurations. One-Series Ex d pressure switches have an RTD temperature range from -300 to 1000°F, a 4-20 mA output, differential pressures up to 200 PSID, and gage pressures up to 6000 PSI. Other features include: no moving parts, solid-state design, a digital process/status display, intelligent self-diagnostics, a fully adjustable set-point/deadband, etc.

Barksdale, Inc. offers P1X Series explosion-proof pressure switches with NEMA 7 and 9 enclosure ratings. Switches allow operating temperatures ranging from -20 to +165°F, pressure connections ranging from 1/4" to 18 NPT female (standard), and an accuracy level +/- 2% of the adjustable range. Switches are constructed from anodized aluminum and Buna-N materials. Optional features include: cleaning for oxygen service, factory preset, hermetically sealed limit switch, a NEMA 4X enclosure, Teflon/Viton diaphragms, etc.

Sigma-Netics, Inc. offers Explosion Proof NEMA 7 switches in factory set and adjustable pressure configurations. Switches are explosion-proof, they have a 316 stainless steel construction, standard connection ranges from 1/4" to 18 NPT (male), and pressure signaling from 8 to 5000 PSIG. Switches are ideal for for military and hazardous condition applications.