24 Series

Delta-Pro™ 24 Series Differential Pressure Switch

The cost-effective 24 Series Delta-Pro differential pressure switch offers a unique blend of compact size, excellent performance, and environmental protection for OEM applications. Available with brass or polysulfone pressure connections, the Delta-Pro is ideal for applications involving hot or cool air, water, gas, or oil.


The precision snap-acting switch and sensitive diaphragms combine to provide a narrow deadband and repeatability of approximately ±1% of full-scale range. A convenient, externally accessible adjustment screw is multi-turn to provide easy setpoint adjustability. The force-balanced design gives the Delta-Pro differential pressure switch excellent vibration resistance.

  • Corrosion-resistant molded NEMA 4 enclosure
  • ​Brass or polysulfone pressure connections
  • ​Terminal block wiring
  • ​Lowest cost differential pressure switches
  • ​​ JIT delivery


Visit our Certifications Page for all 24 series Certifications

  • UL listed and cUL certified. CE compliant to low voltage directive and pressure equipment directive
  • ​Differential pressure measurement
  • ​Compact size
  • ​Brass and polysulfone (FDA compliant) pressure connections
  • ​5 A @ 125/250 VAC SPDT snap-acting switch
  • ​External stainless-steel, multi-turn adjusting screw
  • ​OEM capabilities include external adjustment knob with or without reference scale
  • ​Complies with Enclosure Type 4 with watertight conduit fitting
  • ​​Optional red status light
  • ​Adjustable ranges:
    • Differential pressure: 1 to 45 psid (68,9 mbar to 3,1 bar)

Installations Manuals

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