Unigas RG75 Manual Of Installation - Use - Maintenance page 25

PART III: OPERATION
Fig. 11
Example (Bergonzo): if a 220kg/h flow rate BERGONZO nozzle is provided, set the return pressure at 11bar, supply at 20bar on the
delivery to get a 220kg/h flow rate. If the return pressure needed is 5bar, instead, act on the V adjusting screw on the pressure
governor (see chapter on page 23). The flow rate will then be about 95kg/h (see the example showed on the Bergonzo diagram).
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