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Pressure Switches including Low Pressure Switches, High Pressure Switches and Pneumatic Switches from Neo-Dyn.

A hermetically sealed enclosure is completely sealed from the environment and our Neo-Dyn hermetically sealed electrical assemblies are all metal with a glass header. All joints are soldered or welded to insure sealing integrity. Our explosion-proof enclosure is capable of withstanding an explosion which may occur within, and capable of preventing the ignition of an explosive atmosphere which may surround it. Plus you get the same benefits from our Belleville spring; greater set-point, vibration resistance, capability and cycle life.

Although, our standard product line is among the broadest in the industry; Pressure Switches General Purpose, Vacuum Switches General Purpose, Vacuum Switches Hazardous Area, Differential Switches General Purpose, Differential Switches Hazardous Area, Temperature Switches General Purpose, Temperature Switches Hazardous Area, Sanitary Switches and our Switch Accessories. If you do not see what you want, please submit your request (link below) and our customer-support and engineering staff will work with you to provide a switch, ideally suited to your application.

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Pressure Switches Hazardous Area

General Purpose and Hazardous Area switches (listed below) are catagorized by NEMA standards. Click on either the product image or the product description to view the switch datasheet.

100P Explosion Proof (Division 2)	Pressure Switch/Internal Adjustment. The 100P5 spring pressure switch is designed for division 2 hazardous areas and applications which include pneumatic and low impluse hydraulics up to 3000 psig. Enclosure 5.
100P NEMA 4X, 7, 9 & 13	Series Pressure Switch/Internal Adjustment. The 100P7 is designed for use in hazardous areas. Applications include pneumatic and low impulse hydraulics up to 3,000 psig. Enclosure 7.
100P NEMA 7 & 9	Series Pressure Switch/Internal Adjustment. The 100P (diaphragm sensor) is for pneumatic and low impulse hydraulics up to 3,000 psig. Enclosure 6.
110P Division 2	Series Pressure Switch/Internal Adjustment - This unit has been designed for Division 2 explosion proof environments. Enclosure 5.
110P NEMA 7 & 9	Series Pressure Switch/Internal Adjustment - This explosion-proof hermetically-sealed switch is designed for low pressure applications. Enclosure 6.
112P NEMA 7 & 9	Series Flanged Pressure Switch/Diaphragm Sensor. Flanged construction is to accommodate corrosive viscous media. Redundant seals with venting between is for alarm or indication. Enclosure 6.
115P/115PP NEMA 7 & 9	Series Pressure Switch/Tamper Proof. This compact and versatile pressure switch with built to order set points is fully tamper proof. Excellent set point stability and vibration resistant design for explosion proof applications. Enclosure 6. [I/O Instruction Sheet.]
122P NEMA 7 & 9	Series Pressure Switch/Internal Adjustment. Compact adjustable switch for low to mid range process applications. Excellent set point stability and vibration resistance. Explosion proof electrical makes this switch ideal for chemical process applications. Enclosure 6.
123P NEMA 7 & 9	Pressure Switch/Internal Adjustment. Compact adjustable switch for low to mid range pressures. Excellent set point stability and vibration resistance. The flush mount (welded diaphragm) process connection offers suitability for viscous process applications. Enclosure 6.
125P NEMA 7 & 9	Series Pressure Switch/Tamper Proof. Designed for high pressure pneumatic or low impulse hydraulic applications requiring a narrow deadband in explosion proof applications. Suited for corrosive or hazardous environments. Enclosure 6.
130P NEMA 7 & 9	Series Pressure/Tamper Resistant is a compact versatile pressure switch is suitable for numerous applications serving low to mid-range pressure applications. Enclosure 6.
131PX NEMA 4X, 7, 9 and 13	Series Pressure/Internal Switch (Explosion Proof, Hermetically Sealed) is a compact adjustable pressure switch for pneumatic and low impulse hydraulic process applications. The 131P series pressure switch also has a selectable deadband feature which can be preset to fit most any application. Enclosure 6.
132P NEMA 7 & 9	Series Pressure Switch/Internal Adjustment. Compact adjustable switch for low to mid-range process applications. Excellent set point stability and vibration resistance. Ideal for hazardous and corrosive media environments. Enclosure 6.
142P NEMA 7 & 9	Series Ultra Low Vacuum/Pressure Switch is designed for low pressure and vacuum to pressure crossover and features many applications with a wide range of internal wetted materials that replace the necessity for diaphragm seals. Good for hazardous or corrosive environments. Enclosure 6.
200P NEMA 7 & 9	Series Pressure Switch/Internal Adjustment. 200P (piston sensor) is for hydraulic system pressures up to 10,000 psig. Enclosure 6.
225P NEMA 7 & 9	Series Pressure Switch/Tamper Proof. Incorporates a sealed piston sensor for high impulse hydraulic applications. Suited for corrosive or hazardous environments. Enclosure 6.
231P NEMA 4X, 7, 9 & 13	Series Pressure Switch/Internal Adjustment. Compact, adjustable pressure switch for high pressure hydraulic process applications. Enclosure 6.
232P NEMA 7 & 9	Series Pressure Switch/Internal Adjustment. Compact adjustable switch for high pressure hydraulic process applications. Excellent set point stability and vibration resistance. Ideal for hazardous and corrosive media environments. Enclosure 6.