Figure 1-3. Hfg2.0 Dimensions, 3-Piece Housing - Hamilton Sundstrand Company Gas Fuel Metering Valve HFG2.0 User Manual

Vent Port
3
The gas leakage rate through the vent port is less than 200 cm /hr (air or
2
N as test flow). The vent port features a 1/8-NPT fitting. See Figure 1-4.
Consult local installation codes to determine whether and how to connect
this port.

Figure 1-3. HFG2.0 Dimensions, 3-Piece Housing

8 HFG2.0 USER GUIDE