Karl Dungs FRG series regulators automatically adjust gas flow based on air flow. When the diaphragm is under positive pressure as it is when used with a nozzle-mix burner, it is called a proportionator. When used under negative pressure as in the case of a proportional mixer, it is called a zero governor. Please contact us for assistance in sizing for your particular application.
| Proportionator/ Zero Governor |
| Model # |
| FRG705/6 1/2" NPT |
| FRG707/6 3/4" |
| FRG710/6 1"NPT |
