Neo-Dyn Datasheets for Pressure Switches

Pressure switches are actuated by a change in the pressure of a liquid or gas.  They activate electromechanical or solid-state switches upon reaching a specific pressure level.
Pressure Switches: Learn more

Product Name Notes
Pressure Switch with Internal Adjustment - NEMA 4X & 13 -- 231P
Pressure Switch with Internal Adjustment - NEMA 4X, 7, 9 & 13 -- 231P
Tamper Proof Pressure Switch - NEMA 4 & 13 -- 225P
Tamper Proof Pressure Switch - NEMA 4X, 7, 9 & 13 -- 225P
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. Specifications Deadband (Differential): The deadband...
Miniature Tamper Proof Pressure Switch- NEMA 1 & 2 -- 105P/105PP All purpose miniature tamper proof switch, extremely light weight and durable construction. Has efficient Nega-Rate® Belleville disc spring sensing mechanism. Small size improves vibration and shock resistance. Specifications Deadband (Differential):...
Pressure Switch with Internal Adjustment - NEMA 4X, 7, 9 & 13 -- 132P Compact adjustable pressure switch for low to mid-range process applications. Efficient Nega-Rate® Belleville disc spring for set point stability and vibration resistance. Stainless steel wetted materials and hermetically sealed, explosion-proof...
Pressure Switch with Internal Adjustment - NEMA 4X, 7, 9 & 13 -- 232P Compact, adjustable pressure switch for high pressure hydraulic process applications. Efficient Nega-Rate® Belleville disc spring for set point stability and vibration resistance. Stainless steel wetted materials and hermetically sealed, explosionproof...
Pressure Switch with Internal Adjustment - NEMA 4 & 13 -- 232P Compact, adjustable pressure switch for high pressure hydraulic process applications. Efficient Nega-Rate® Belleville disc spring for set point stability and vibration resistance. Specifications Electrical: Snap action electrical switch listed by...
Pressure Switch with Internal Adjustment - NEMA 4X, 7, 9 & 13 -- 123P Compact, adjustable pressure switch for low to mid-range process applications. Efficient Nega-Rate® Belleville disc spring for set point stability and vibration resistance. 316 stainless steel exterior and interior plus hermetically...
Pressure Switch with Internal Adjustment - NEMA 4X, 7, 9 & 13 -- 122P Compact, adjustable pressure switch for low to mid-range process applications. Efficient Nega-Rate® Belleville disc spring for set point stability and vibration resistance. Wide selection of wetted materials, 316 stainless steel...
Pressure Switch with Internal Adjustment - NEMA 4X, 7, 9 & 13 -- 131PX 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. The 131P...
Pressure Switch with Internal Adjustment - NEMA 4 & 13 -- 132P 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. Specifications Electrical: Snap action electrical switch...
Pressure Switch with Internal Adjustment - NEMA 4X & 13 -- 131P 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. The 131P...
Tamper Resistant Pressure Switch - NEMA 4 & 13 -- 130P 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. Once...
Tamper Resistant Pressure Switch - NEMA 4X, 7, 9 & 13 -- 130P 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 and is...
Tamper Proof Pressure Switch - NEMA 4 & 13 -- 115P/115PP
Tamper Proof Pressure Switch - NEMA 4X, 7, 9 & 13 -- 115P/115PP
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. Specifications Deadband...
Tamper Proof Pressure Switch - NEMA 4X, 7, 9 & 13 -- 125P 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...
Tamper Proof Pressure Switch - NEMA 4 & 13 -- 125P 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. Specifications Deadband...
Flanged Pressure Switch with Diaphragm Sensor - NEMA 4X, 7, 9 & 13 -- 112P Flanged pressure switch for installations that formerly required a chemical seal with fill fluids. Reliable Nega-Rate® Belleville disc spring sensing mechanism. Redundant seals with venting between seals for alarm or...
Differential Pressure Switch - NEMA 4X, 7, 9 & 13 -- 151P
Differential Pressure Switch - NEMA 4X, 7, 9 & 13 -- 151P
Low range adjustable differential pressure switch compact design features efficient Nega-Rate® Belleville disc spring sensing mechanism. Stable set points are not affected by system pressure changes. Specifications Electrical: Snap action...
Differential Pressure Switch - NEMA 4X, 7, 9 & 13 -- 160P Mid-range, adjustable differential pressure switch. Efficient Nega-Rate® Belleville disc spring sensing mechanism for stable set points during system pressure changes. Hermetically sealed, explosion-proof electrical assembly well suited for hazardous or...
Differential Pressure Switch - NEMA 4 & 13 -- 160P Mid-range, adjustable differential pressure switch. Efficient Nega-Rate® Belleville disc spring sensing mechanism. Weather proof enclosure and stable set points during system pressure changes makes this switch ideal for a wide...
Hazardous Areas Division 2 Pressure Switch with Internal Adjustment -- 110P 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...
Pressure Switch with Internal Adjustment - NEMA 4X, 7, 9 & 13 -- 110P Sensitive Nega-Rate® Belleville spring adjustable pressure switch for low pressure applications. Specifications Electrical: Snap action electrical switch listed by Underwriters’ Laboratories, Inc., FM Approval and CSA International Electrical Connection: 1/2...
Pressure Switch with Internal Adjustment - NEMA 4 & 13 -- 110P Sensitive Nega-Rate® Belleville spring adjustable pressure switch for low pressure applications. Specifications Electrical: Snap action electrical switch recognized by Underwriters’ Laboratories, Inc. and CSA International Electrical Connection: 1/2 NPT female...
Sanitary Pressure Switch - 7 & 9 -- 117P 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...
Ultra Low Differential Pressure Switch - NEMA 4X, 7, 9 & 13 -- 152P8 Ultra low adjustable differential pressure 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...
Ultra Low Differential with Pressure Switch - NEMA 4 & 13 -- 152P8 Ultra low adjustable pressure switch. Unique construction using efficient Nega-Rate® Belleville disc spring for stable set points and high proof pressure. Wide range of wetted materials makes this series well...
Ultra Low Vacuum Pressure Switch - NEMA 4 & 13 -- 142P 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. Wide range of wetted materials...
Pressure Switch with Internal Adjustment - NEMA 4 & 13 -- 100P Versatile Nega-Rate® Belleville disc spring pressure switch for a wide range of applications. Series 100P (diaphragm sensor) for pneumatic and low impulse hydraulics up to 3000 psig system pressure. Specifications...
Pressure Switch with Internal Adjustment - NEMA 4 & 13 -- 101P 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. Specifications...
Pressure Switch with Internal Adjustment - NEMA 4 & 13 -- 200P 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. Specifications Electrical: Snap action...
Pressure Switch with External Adjustment - NEMA 4 & 13 -- 201P 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...
Hazardous Areas Pressure Switch with Internal Adjustment - NEMA 4X, 7, 9 & 13 -- 100P 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. Various wetted material selections make...
Hazardous Areas Pressure Switch with Internal Adjustment - NEMA 4X, 7, 9 & 13 -- 100P 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. Specifications Electrical:...
Pressure Switch with Internal Adjustment - NEMA 4X, 7, 9 & 13 -- 200P 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. Specifications Electrical: Snap action electrical...
Hazardous Areas Division 2 Pressure Switch with Internal Adjustment -- 100P 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...