Model 522 - Differential Pressure Diaphragm Type


The Mid-West Model 522 Series Differential Pressure Indicating Gauge is a compact, weather resistant device for challenging DP Applications and installations. It is suitable for use in outdoor and “Hose Down” applications. The Rolling Diaphragm Sensing Element isolates the high and low sides (Reverse Pressure must be avoided).


  • Differential Pressure Range 0-5 PSID (0-0.35 bar) to 0-25 PSID (0-1.7 bar)
  • Max. Static pressure 1000 PSIG (70 bar)
  • Max. Over Range Differential Pressure: 200 PSID (14 bar) -High over low
  • Aluminum or 316/316L SS Gauge Body
  • Wetted 316 SS, Ceramic, & Acetal moving components
  • Available with Buna or Viton® Elastomers
  • Process Connections (End Connected) 1/8″ or 1/4″ FNPT
  • Weather-resistant construction standard
  • Dial Accuracy ± 5% F.S. standard
  • 0.8” weatherproof multicolored Dial
  • 2-1/2” optional dial
  • Switch Options:
    • SPST 60W, 240 VAC/VDC, 3 amp
Model 522
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