Series-PFG2

Supported Applications

The Dwyer Series PFG2 Process Filter Gage is designed for determining the state of an in-line 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 is suited for filter applications, line loss, valve drop, and many other differential pressure applications where a simple indicator is needed.

Operating Conditions & Performance

The Series PFG2 operates with liquids and gases compatible with stainless steel (SS), glass filled nylon (GFN), and fluoropolymer. The maximum process temperature limit is 200°F (93°C) and the pressure rating is 300 psig (20.7 bar). Accuracy is specified as ±5% FS.

Configuration Options

The series offers three distinct measurement ranges, each with defined color-coded zones for filter status indication:

• PFG2-02 (Range 0 to 5 psid): Green zone: 0 to 2.5 psid; Yellow zone: 2.5 to 3.75 psid; Red zone: 3.75 to 5 psid.
• PFG2-03 (Range 0 to 10 psid): Green zone: 0 to 5 psid; Yellow zone: 5 to 7.5 psid; Red zone: 7.5 to 10 psid.
• PFG2-06 (Range 0 to 25 psid): Green zone: 0 to 11 psid; Yellow zone: 11 to 18.5 psid; Red zone: 18.5 to 25 psid.

The dial indicates the direction of process flow with an arrow pointing to the low pressure port. The unit features a glass filled nylon body, aluminum mounting block, polyester lens, and fluoroelastomer elastomers. Wetted materials include Aluminum, SS, glass filled nylon, and fluoropolymer.

Key Product Differences

The primary variation across the Series PFG2 is the differential pressure range selected via the model suffix (-02, -03, or -06). All variants share identical physical dimensions of 3.25" H x 3" W x 2.31" D (per manual) and a weight of 9.6 oz (272.2 g). Mounting is supported in any orientation using #10-32 UNF threaded holes spaced 3/4" apart.