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

For hazardous areas, Neo-Dyn Pressure Switches are used to ensure a fast-acting response to dangerous pressure levels, whether that means setting off an alarm or switching off and shutting down the process or equipment. Able to be used in regular hydraulic or pneumatic processes, pressure switches can be used in high or low pressure applications ranging from vacuum to 10,000 psig. Also using the Belleville spring design, hazardous area pressure switches retain such excellent features as cycle life, vibration resistance, and set point stability as well as a hermetically sealed electrical assembly for additional protective capabilities.

While our standard capabilities cover a broad spectrum of switch designs, if you cannot find the right pressure switch for your application from the wide range of standard pressure switches available, please submit your request. Our customer-support and engineering staff are ready and able to provide you with a switch custom-fitted 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.
click to view the 100P5 PDF 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.
click to view the 100P7 PDF datasheet.
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.
click to view the 100PX PDF datasheet.
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.
click to view the 110P5 PDF datasheet.
110P Division 2
Series Pressure Switch/Internal Adjustment - This unit has been designed for Division 2 explosion proof environments. Enclosure 5.
click to view the 110PX PDF datasheet.
110P NEMA 7 & 9
Series Pressure Switch/Internal Adjustment - This explosion-proof hermetically-sealed switch is designed for low pressure applications. Enclosure 6.
click to view the 112PX PDF datasheet.
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.
click to view the 115Px PDF datasheet.
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.]
click to view the 122PX PDF datasheet.
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.
click to view the 123PX PDF datasheet.
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.
click to view the 125Px PDF datasheet.
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.
click to view the 130PX PDF datasheet.
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.
click to view the 131PX PDF datasheet.
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.
click to view the 132Px PDF datasheet.
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.
click to view the 142Px PDF datasheet.
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.
click to view the 200PX PDF datasheet.
200P NEMA 7 & 9
Series Pressure Switch/Internal Adjustment. 200P (piston sensor) is for hydraulic system pressures up to 10,000 psig. Enclosure 6.
click to view the 225Px PDF datasheet.
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.
click to view the 231PX PDF datasheet.
231P NEMA 4X, 7, 9 & 13
Series Pressure Switch/Internal Adjustment. Compact, adjustable pressure switch for high pressure hydraulic process applications. Enclosure 6.
click to view the 232Px PDF datasheet.
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.