Ashcroft 1133 Differential Pressure Gauge

The Ashcroft® 1133 differential pressure gauge is an economical means for measuring very low pressure with high static between two independent pressure sources. Uses a convoluted diaphragm to sense low inches of water differential pressure without migration of media between the low and high pressure sides.

Key Features:

  • High static pressure capability (500 psi)
  • Superior magnets for smoother pointer motion
  • Reed switches (optional) for direct system control 


  • Accuracy: ±2% (ascending pressure)
  • Pressure Ranges: 0-1" IWD thru 0-25" IWD
  • Dial size: 3 1/2", 4", 4 1/2" and 6"
  • Case: stainless steel
  • Body: aluminum or stainless steel
  • Wetted Material: body material, Teflon®, ceramic and various O-ring materials

The 1133 differential gauge is ideal where safe and reliable pressure measurement is essential:

  • Filtration Monitoring
  • Flow Measurement
  • Leak Detection
  • Clean Room Positive Pressure (low dp)

Please Contact Us for more detail