OTK Corporation
Industrial Equpment
Moscow - Almaty - Riga - Baku - Minsk - Erevan - Tbilisi - Bishkek -Tashkent - Ashgabat

24 Series

Delta-Pro™ 24 Series Pressure and Differential Pressure Switch

The cost-effective 24 Series Delta-Pro™ pressure, vacuum, and differential pressure switches offer a unique blend of compact size, excellent performance, and environmental protection. 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 set point adjustability. The force-balanced design gives the Delta-Pro excellent vibration resistance.

  • Corrosion resistant molded NEMA 4 enclosure
  • ​Brass, Teflon® or polysulfone wetted parts
  • ​Terminal block wiring
  • ​Our lowest cost differential pressure switch
  • ​Adjustable ranges:
    • 30 “Hg Vac to 90 psi
      1 bar Vac to 6,2 bar
    • 1 to 45 psid
      70 mbar d to 3 bar d Approvals: UL, CSA, CE
  • ​ JIT Delivery


  • UL listed and cUL certified. CE compliant to low voltage directive and pressure equipment directive
  • ​Vacuum, Pressure or Differential pressure measurement
  • ​Compact Size
  • ​Brass & Polysulfone (FDA compliant) Pressure Connections
  • ​5A @ 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
  • ​Terminal block wiring
  • ​Optional red status light
  • ​Adjustable Ranges:
    • Pressure: 30″ Hg Vac to 90 psi (-1 to 6,2 bar)
    • Differential Pressure: 1 to 45 psid (68,9 mbar to 3,1 bar)

Technical Specifications

24 Series Pressure,
Vacuum & Differential Pressure

Installations Manuals

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