744-S Series
Pressure Switches

Rugged stainless steel switch ideal in extreme environments

Our Model 744-S, fixed-setting pressure switch is a miniature piston-operated factory set design ideal for applications with limited installation space. This piston-operated switch model thrives in tough environments containing oil, fuel, water, dust, vibration or shock.

« Pressure Switches / 744-S Series
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Features

  • Fixed pressure
  • Piston
  • 8-6000psig range

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Specifications

  • Temperature range from -40 to 250°F
  • Pressure connection: 1/4″-18 and 1/8″-27 NPT, 9/16″-18 UNJF-3A
  • At 28 VDC:
    • 7 amps resistive
    • 4 amps inductive
    • 2 1/2 amps lamp load
  • 303 stainless steel hydraulic module housing
  • Polyphenylene sulfide electric module housing
  • Lead wire connectors
  • Single pole single throw
  • Single pole double throw
  • Nitrile “o”-ring, fluorocarbon and ethylene propylene
  • UL Listed
  • NEMA Type 4 rating
  • Integral pressure port snubbing

Available Options

  • Snap-action electrical switch tested to 1 million cycles
  • Gold contact switches for dry circuit applications
  • High overpressure capability
  • Custom configuration
  • High shock and vibration survivability
  • Media compatibility

Applications

  • Off road equipment
  • Industrial OEM equipment
  • Train braking systems
  • Compactors
  • Compressors

 

Operating Pressure Data

Series
Range Indicator Pressure Range Tolerance on Set Pressure* Dead Band* Max System Pressure Proof Pressure
744 1 8 – 125 ±1 / ±5 4 / 14 1500 2250
6 50 – 275 ±5 / ±10 10 / 27 2400 3500
2 75 – 500 ±7 / ±15 15 / 45 3000 4500
7 130 – 1000 ±8 / ±20 20 / 95 3000 8000
3 300 – 1500 ±15 / ±40 45 / 130 4500 6800
4 1250 – 3000 ±40 / ±75 150 / 240 6500 10000
5 2500 – 6000 ±75 / ±125 250 / 425 6500 12000

*Interpolate for intermediate pressures
Pressure in PSIG

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