Ashcroft 5509 Differential Pressure Gauge

The Ashcroft® 5509 differential pressure gauge is used for monitoring differential pressure between two separate pressure sources. Designed for harsh services, this model provides high reliability and safety. A perfect solution for challenging application and installation requirements.

Key Features:

  • Robust design
  • High static pressure limits
  • External zero adjustment
  • Flow measurement dial (optional)
  • Electric contacts (optional) for process monitoring and control


  • Accuracy: ±2.5% full scale
  • Pressure Ranges: 10" IWD to 400 psid
  • Dial size: 4" (100 mm) and 6" (160 mm) 
  • Case: stainless steel; open front or solid front versions

The 5509 differential gauge is ideal where safe and reliable pressure measurement is essential:

Process Market:

  • Refineries
  • Chemical and Petrochemical Plants
  • Water and Wastewater Pressure Control
  • Mining and Metals
  • Filter, Level and Flow Measurement

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