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.