Series PFG2 Process Filter Gauge

Brand: Dwyer Instruments, LLC

The Series PFG2 Process Filter Gage is designed for determining the state of an inline filter.

The differential pressure indicator determines the pressure drop on either side of a filter through its 1/8" female NPT pressure connections, and relates the value to one of three zones: clean (green), change (yellow), or dirty (red).

The Series PFG2 is perfectly suited for filter applications, line loss, valve drop, and many other differential pressure applications where a simple indicator is needed.

The direction of process flow is indicated on the dial, with the arrow pointing to the low pressure port.

The PFG2 can be connected in-line through the side process connections, but can also be directly mounted through the outlet/inlet.
  • Simple easy to understand indicator means no guessing filter status
  • Removable mounting block provides direct mounting options especially in difficult filter access locations
  • Quick installation reduces time to operation



  • ± 5 % of Full Scale


  • Fluorocarbon

Enclosure, Body Material

  • Aluminum
  • Glass-Filled Nylon


  • Polyester


  • Gases Compatible with Stainless Steel, Glass-Filled Nylon & Fluoropolymer
  • Liquids Compatible with Stainless Steel, Glass-Filled Nylon & Fluoropolymer

Mounting Position

  • Any Orientation with 10-32 Threaded Holes 3/4” Apart

NPT Connection

  • 1/8” NPT Female

Pressure Range

  • bar: 0 to 1.724
  • kPa: 0 to 172.4
  • psid: 0 to 25

Pressure Type

  • Differential

Temperature Range

  • 93° C (200° F)

Wetted Materials

  • Aluminum
  • Fluoropolymer
  • Nylon, Glass-Filled
  • Stainless Steel

  • Filter Pressure Drop
  • Filter Status
  • Valve Drop
  • Line Loss

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