703-U Series
Pressure Switches

Stainless steel, UL rated, explosion proof design

Our Model 703-U is a heavy-duty, factory set pressure switch used for gaseous or liquid fluid systems. Its piston design makes it well-suited for applications that may experience overpressure conditions. At the same time, the 703-U offers exceptional accuracy and repeatability.

« Pressure Switches / 703-U Series
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Features

  • Factory set fixed pressure
  • Piston
  • 6-5000psig range

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Specifications

  • Temperature range from -40 to 180°F
  • Pressure connection: 1/4″-18 NPT
  • Electrical at 28 VDC:
    • 7 amps resistive
    • 4 amps inductive
    • 2 1/2 amps lamp load
  • Single pole double throw
  • Double pole double throw
  • 1/2”-NPT electrical connection with 5 full threads for conduit engagement
  • Factory-sealed lead wires—Type UL 1015 AWG #18, 24”
  • Hydraulic and electric modules AISI 316 Stainless Steel
  • UL listed for use in hazardous locations:
    • Class 1: Division 1, Groups A, B, C, D
    • Class 2: Groups E, F, G
  • NEMA Type 7 rating

Available Options

  • Snap-action electrical switch tested to 1 million cycles
  • 316L stainless steel construction for excellent corrosion resistance
  • Exceptional accuracy and repeatability
  • High overpressure capability

Applications

  • Off-shore exploration
  • Petrochemical processing
  • Industrial OEM equipment
  • Oil and Gas, Pipelines
  • Control Panels
Operating Pressure Data

Series
 
Pressure Range Dead Band* Max System Pressure Proof Pressure
PSIG BAR PSIG BAR PSIG BAR PSIG BAR
703-U 6 – 50 0.41 – 3.45 2 / 6 0.14 – 0.41 400 27.58 600 41.37
703-U 50 – 200 3.45 – 13.79 8 / 20 0.55 – 1.38 600 41.37 900 62.05
703-U 200 – 750 13.79 – 51.71 25 / 70 1.72 – 4.83 3000 206.84 4500 310.26
703-U 750 – 2500 51.71 – 172.37 80 / 225 5.52 – 15.51 5000 344.74 7500 517.11
703-U 2500 – 5000 172.37 – 344.74 220 / 400 15.17 – 27.58 7500 517.11 10000 689.48

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[email protected] | 973-616-6900

2 North Corporate Drive, Riverdale, NJ 07457 | Sigma-Netics, Inc. © 2024