703-U Pressure Switch

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.

Features

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


Advantages

  • 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

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
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