DUNGS FRG Series

The FRG ratio regulator/zero governor has an adjustable setpoint spring and nonadjustable counterspring. The FRG is recommended for industrial and commercial heating applications. It is suitable for dry natural gas, propane, butane, air and inert gases. Suitable for up to 0.1 % by volume, dry H2 S.

•  Optional Low fire bypass for ½ in. NPT to 2 in. NPT models. Ideal for low flow or for high turndown applications.
• Steady, precise and instantaneous regulation of the outlet pressure.
• Connection for air impulse line.
• Inlet and outlet ¼ in. NPT test ports on each side.
• Factory installed vent limiter. Review applicable codes for vent line requirements.