The DUNGS Flanged FRNG proportionator/zero governor has an adjustable setpoint spring and nonadjustable counterspring. The DUNGS Flanged FRNG is recommended for industrial and commercial heating applications. It is suitable for natural gas, propane, butane, air and other inert gases.
Application (Proportionator)
Holds a constant gas/air ratio by varying gas flow to a gas burning piece of equipment in proportion to combustion air flow. Adjustable ratio for excess gas or air operation.
Application (Zero Governor)
Controls fuel by reducing incoming gas pressure to zero or adjustable to slightly above or below atmospheric pressure.
| Maximum Operating Pressure | PROPORTIONATOR 7 PSI (500 mbar) / ZERO GOVERNOR 7 PSI (500 mbar) |
|---|---|
| Optimal Input Pressure Range | PROPORTIONATOR 2-82 in. W.C (5-200mbar)/ ZERO GOVERNOR 2-20 in. W.C (5 to 50 mbar) |
| Output Pressure Range | PROPORTIONATOR 0-60 in. W.C (10-150 mbar)/ ZERO GOVERNOR -1.2 to 2 in. W.C (-1 to 2 in W.C (-3 to 5 mbar) |
| Ambient Temperature Rating | +5 °F to +160 °F (15 °C to +70 °C) |
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