Adjustment is carried out by means of the bypass, via the knob-holder spindle.
The coupling to the burner is flanged for both Ø 16 and Ø 18 pipes, which must be perforated by a drill and not by a punch. The flanges can be in two versions (see photo): one with the screw which pushes the pipe against the gasket and the other which forces the pipe against the gasket for pushing at 45° the two half-flanges which are brought close together.
TESTS:
MATERIALS
Body: drop-forged OT 58 brass
Plug: drawn OT 58 brass
Spindle: profiled OT 58 brass
Spring: piano wire with surface protection against corrosion.
SEAL
Test performed for statistical quality control on the production. In open position with outlet blocked, and in closed position.
Testing pressure: 150 mbar.
Max. leakage permitted: 12 cc/hour.
Fluid: dry air.
FLOW
Test performed for statistical quality control in max. and min. positions.