General Information
ITT Neo-Dyn® is a leading manufacturer of high-quality and reliable industrial switches. Our compact adjustable switches, pressure switches, hazardous area switches, vacuum switches, and temperature switches support a variety of applications throughout the world.
Our legacy of competitively priced products and on-time delivery, guarantees that you have the proven performance in the product that you need to support your specific requirements when you need it most. With a strong focus on the aerospace, general industrial, energy, and chemical markets, we are your first choice for all of your switch product needs.

Neo Dyn Industrial Switches Product
Pressure Switch
Pressure industrial switches are designed to monitor pressure and provide an output when a set pressure is reached. They are used for a variety of hydraulic and industrial applications, but they all have one thing in common: it is imperative that they work properly for your safety. With our experience and quality of service, you can trust that our pressure switches will meet and exceed your needs.
General Use
- 100P NEMA 4 & 13 Pressure Switch/Internal Adjustment
- Versatile Nega-Rate® Belleville disc spring pressure switch for a wide range of applications. Series 100 P (diaphragm sensor) for pneumatic and low impulse hydraulics up to 3000 psig system pressure.
For further information please click the link here: Neodyn 100P NEMA 4 and 13 Pressure Switch
101P NEMA 4 & 13 Pressure Switch/External Adjustment
- Versatile Nega-Rate® Belleville disc spring pressure switch for a wide range of applications. Series 101P (diaphragm sensor) for pneumatic and low impulse hydraulics up to 3000 psig system pressure.
For further information please click the link here: Neodyn 101P NEMA 4 and13 External Adjustment
- 105P/105PP NEMA 1 & 2 Miniature Tamper Proof Pressure Switch
- All-purpose miniature tamper-proof switch, extremely lightweight and durable construction. Has an efficient Nega-Rate® Belleville disc spring sensing mechanism. Small size improves vibration and shock resistance.
For further information please click the link here: Neodyn 105P NEMA 1 and 2 Miniature Tamper Proof
- 110P NEMA 4 & 13 Pressure Switch/Internal Adjustment
- Sensitive Nega-Rate® Belleville spring adjustable pressure switch for low-pressure applications.
For further information please click the link here: Neodyn 110P NEMA 4 and 13 Pressure Switch
- 115P/115PP NEMA 4 & 13 Pressure Switch/Tamper Proof
- Compact, versatile pressure switch with built-to-order set points. This easy-to-install switch features the efficient NegaRate® Belleville disc spring for the set-and-forget application.
For further information please click the link here: Neodyn 115PP NEMA 4 and 13 Pressure Switch
- 125P NEMA 4 & 13 Pressure Switch/Tamper Proof
- Designed for high-pressure pneumatic or low-impulse hydraulic applications requiring a narrow deadband. Has diaphragm sensor with efficient Nega-Rate® Belleville disc spring for excellent accuracy and repeatability.
For further information please click the link here: Neodyn 125P NEMA 4 and 13 Pressure Switch
- 130P NEMA 4 & 13 Pressure Switch/Tamper Resistant
- Compact, versatile pressure switch for low to mid-range pressure applications. Features efficient Nega-Rate® Belleville disc spring for stable set points, vibration resistance and field adjustability through the pressure port.
For further information please click the link here: Neodyn 130P NEMA 4 and 13 Pressure Switch
- 131P NEMA 4X & 13 Pressure Switch/Internal Adjustment
- Compact, adjustable pressure switch for pneumatic or low-impulse hydraulic process applications. Using our efficient Nega-Rate® Belleville disc spring, we offer superior set point stability and vibration resistance.
For further information please click the link here: Neodyn 131P NEMA 4X and 13 Pressure Switch
- 132P NEMA 4 & 13 Pressure Switch/Internal Adjustment
- Compact, adjustable pressure switch for pneumatic or low-impulse hydraulic process applications. Efficient Nega-Rate® Belleville disc spring for set point stability and vibration resistance.
- 142P NEMA 4 & 13 Ultra Low Vacuum Switches
- Ultra low pressure and vacuum switches. Unique construction using efficient Nega-Rate® Belleville disc spring for stable set points and high proof pressure. Wide range of wetted materials makes these vacuum switches well-suited for applications
For further information please click the link here:
- 200P NEMA 4 & 13 Pressure Switch/Internal Adjustment
- Versatile Nega-Rate® Belleville disc spring pressure switch for a wide range of applications. Series 200P (piston sensor) for hydraulic applications up to 10000 psig system pressure.
For further information please click the link here: Neodyn 200P NEMA 4 and 13 Pressure Switch
- 201P NEMA 4 & 13 Pressure Switch/External Adjustment
- Versatile Nega-Rate® Belleville disc spring pressure switch for a wide range of applications. Series 201P (piston sensor) for hydraulic applications up to 10000 psig system pressure. Externally adjustable for convenient set point changes.
- 225P NEMA 4 & 13 Pressure Switch/Tamper Proof
- A sealed piston sensor with a efficient Nega-Rate® Belleville disc spring makes this switch well suited for high impulse hydraulic applications.
- 231P NEMA 4X & 13 Pressure Switch/Internal Adjustment
- Compact, adjustable pressure switch for high pressure hydraulic process applications. Using our efficient Nega-Rate® Belleville disc spring, we offer superior set point stability and vibration resistance.
- 232P NEMA 4 & 13 Pressure Switch/Internal Adjustment
- Compact, adjustable pressure switch for high-pressure hydraulic process applications. Efficient Nega-Rate® Belleville disc spring for set point stability and vibration resistance.
Hazardous
- 100P Division 2 Internal Adjustment Pressure Switch
- Versatile Nega-Rate® Belleville spring pressure switch for use in division 2 hazardous areas. Applications include pneumatic and low impulse hydraulics up to 3000 psig system pressures. Various wetted material selections make this switch ideal for any type of process application.
For further information please click the link here: Neodyn 100P Division 2 Internal Adjustment Pressure Switch
- 100P NEMA 4X, 7, 9 & 13 Pressure Switch/Internal Adjustment
- Versatile Nega-Rate® Belleville disc spring pressure switch for use in hazardous areas. Applications include pneumatic and low impulse hydraulics up to 3000 psig system pressures.
For further information please click the link here: Neodyn 100P NEMA 4X, 7, 9 and 13 Internal Adjustment
- 100P NEMA 4X, 7, 9 & 13 Pressure Switch/Internal Adjustment
- Versatile Nega-Rate® Belleville disc spring pressure switch for use in hazardous areas. Series 100P (diaphragm sensor) for pneumatic and low impulse hydraulics up to 3000 psig system pressure.
- 110P Division 2 Pressure Switch/Internal Adjustment
- Sensitive Nega-Rate® Belleville spring adjustable pressure switch for low-pressure applications. Unit has been designed for Division 2 explosion-proof environments and is weather proof, making it suitable for all of your Division 2 applications.
- 110P NEMA 4X, 7, 9 & 13 Pressure Switch/Internal Adjustment
- Sensitive Nega-Rate® Belleville spring adjustable pressure switch for low-pressure applications.
- 112P NEMA 4X, 7, 9 & 13 Flanged Pressure Switch/Diaphragm Sensor
- Flanged pressure switch for installations that formerly required a chemical seal with fill fluids. Reliable Nega-Rate® Belleville disc spring sensing mechanism.
For further information please click the link here: Neodyn 112P NEMA 4X, 7, 9 and 13 Flanged Diaphragm Sensor
- 115P/115PP NEMA 4X, 7, 9 & 13 Pressure Switch/Tamper Proof
- Compact, versatile pressure switch with built-to-order set points. This easy-to-install switch features the efficient NegaRate® Belleville disc spring for the set and forget application.
For further information please click the link here: Neodyn 115P 4X, 7, 9 and 13 Pressure Switch
- 122P NEMA 4X, 7, 9 & 13 Pressure Switch/Internal Adjustment
- Compact, adjustable pressure switch for low to mid-range process applications. Efficient Nega-Rate® Belleville disc spring for set point stability and vibration resistance.
For further information please click the link here: Neodyn 122P NEMA 4X, 7, 9 and 13 Pressure Switch
123P NEMA 4X, 7, 9 & 13 Pressure Switch/Internal Adjustment
- Compact, adjustable pressure switch for low to mid-range process applications. Efficient Nega-Rate® Belleville disc spring for set point stability and vibration resistance.
For further information please click the link here: Neodyn 123P NEMA 4X, 7, 9 and 13 Internal Adjustment
- 125P NEMA 4X, 7, 9 & 13 Pressure Switch/Tamper Proof
- Designed for high-pressure pneumatic or low-impulse hydraulic applications requiring a narrow deadband and tamperproof set point. Has diaphragm sensor with efficient Nega-Rate® Belleville disc spring for excellent accuracy and repeatability.
For further information please click the link here: Neodyn 125P NEMA 4X, 7, 9 and 13 Tamper Proof
- 130P NEMA 4X, 7, 9 & 13 Pressure Switch/Tamper Resistant
- Compact, versatile pressure switch well suited for hazardous or corrosive atmospheres. For low to mid-range pressure applications. Features efficient Nega-Rate® Belleville disc spring for superior set point stability
For further information please click the link here: Neodyn 130P NEMA 4X, 7, 9 and 13 Pressure Switch
- 131PX NEMA 4X, 7, 9 & 13 Pressure Switch/Internal Adjustment
- Compact, adjustable pressure switch for pneumatic and low-impulse hydraulic process applications. Using our efficient Nega-Rate® Belleville disc spring, we offer superior set point stability and vibration resistance.
- 132P NEMA 4X, 7, 9 & 13 Hazardous Area Pressure Switch
- Compact adjustable hazardous area pressure switch for low to mid-range process applications. Efficient Nega-Rate® Belleville disc spring for set point stability and vibration resistance.
- 142P8 NEMA 4X, 7, 9 & 13 Ultra Low Vacuum/Pressure Switch
- Ultra low pressure and vacuum to pressure crossover switch. Unique construction using efficient Nega-Rate® Belleville disc spring for stable set points and high proof pressure. Explosion proof enclosure and wide range of wetted materials
For further information please click the link here: Neodyn 142P8 NEMA 4X, 7, 9 and 13 Pressure Switch
- 200P NEMA 4X, 7, 9 & 13 Pressure Switch/Internal Adjustment
- Versatile Nega-Rate® Belleville disc spring pressure switch for use in hazardous areas. Series 200P (piston sensor) for hydraulic applications up to 10000 psig system pressure.
- 225P NEMA 4X, 7, 9 & 13 Pressure Switch/Tamper Proof
- A sealed piston sensor with a efficient Nega-Rate® Belleville disc spring makes this switch well suited for high impulse hydraulic applications with tamper-proof set point.
- 231P NEMA 4X, 7, 9 & 13 Pressure Switch/Internal Adjustment
- Compact, adjustable pressure switch for high pressure hydraulic process applications. Our combined piston sensor and efficient Nega-Rate® Belleville disc spring offers superior set point stability and vibration resistance.
- 232P NEMA 4X, 7, 9 & 13 Pressure Switch/Internal Adjustment
- Compact, adjustable pressure switch for high pressure hydraulic process applications. Efficient Nega-Rate® Belleville disc spring for set point stability and vibration resistance.
Vacuum Switch
- 142P NEMA 4 & 13 Ultra Low Vacuum Switches
- Ultra low pressure and vacuum switches. Unique construction using efficient Nega-Rate® Belleville disc spring for stable set points and high-proof pressure.
- 180P NEMA 4 & 13 Vacuum Pressure Switch/Internal Adjustment
- Adjustable vacuum switch with efficient Nega-Rate® Belleville disc spring sensing mechanism. Weatherproof enclosure and stable set points make this switch ideal for a wide variety of applications.
For further information please click the link here: Neodyn 181P NEMA 4X and 13 Adjustable Vacuum Switch
- 181P NEMA 4X and 13 Adjustable Vacuum Switch
- Compact, adjustable vacuum switch well suited to numerous applications. Our efficient Nega-Rate® Belleville disc spring offers superior set point stability and vibration resistance.
For further information please click the link here: Neodyn 181P NEMA 4X and 13 Adjustable Vacuum Switch
- 182P NEMA 4 & 13 Vacuum Switch / Tamper Resistant
- Compact, versatile vacuum switch suited to numerous applications. Features efficient Nega-Rate® Belleville disc spring for stable set points and is field adjustable through the pressure port.
For further information please click the link here: Neodyn 182P NEMA 4 and 13 Vacuum Switch
- 142P8 NEMA 4X, 7, 9 & 13 Ultra Low Vacuum/Pressure Switch
- Ultra low pressure and vacuum to pressure crossover switch. Unique construction using efficient Nega-Rate® Belleville disc spring for stable set points and high proof pressure.
- 181P NEMA 4X, 7, 9 & 13 Adjustable Hazardous Vacuum Switch
- Compact, adjustable hazardous vacuum switch well suited to numerous applications. Our efficient Nega-Rate® Belleville disc spring offers superior set point stability and vibration resistance.
For further information please click the link here: Neodyn 181P NEMA 4X, 7, 9 and 13 Vacuum Switch
- 182P NEMA 4X, 7, 9 & 13 Vacuum Switch/Tamper Resistant
- Compact, versatile vacuum switch well suited for hazardous or corrosive atmospheres. For vacuum applications. Features efficient Nega-Rate® Belleville disc spring for stable set points and is field adjustable using 1/8″ Allen wrench.
Differential Switch
- 152P8 NEMA 4 & 13 Ultra Low Differential Pressure Switch
For further information please click the link here: Neodyn 152P8 Hazardous Rated Differential Pressure Switch
For further information please click the link here: Neodyn 152P NEMA 4X, 7, 9 and 13 Differential Pressure Switch
- 160P NEMA 4X, 7, 9 & 13 Differential Pressure Switch
For further information please click the link here: Neodyn 160P NEMA 4X, 7, 9, and 13 Differential Pressure Switch
For further information please click the link here: Neodyn 160P NEMA 4 and 13 Differential Pressure Switch
Temperature Switch
- 100T NEMA 4 & 13 Temperature Industrial Switches
For further information please click the link here: Neodyn 100TC NEMA 4X, 7, 9 and 13 Temperature Switch
- 100TC NEMA 4 & 13 Temperature Switch/Internal Adjustment
For further information please click the link here: Neodyn 100TC NEMA 4 and 13 Temperature Switch
- 132T NEMA 4 & 13 Industrial Temperature Switches
Sanitary Switch
- 117P NEMA 7 & 9 Sanitary Switches
For further information please click the link here: Neodyn 117P NEMA 7 and 9 Sanitary Switches
This field-adjustable, compact pressure switch is intended for low- to mid-range process applications. The Tri-Clamp® compatible, polished, process connection makes this switch ideal for food, beverage, and other sanitary services.
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Reference: neodyn.com
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