Butterfly valves to set the flow rate of air on gas burners, prepared for attachment of a gear motor GT, for regulation ratios up to 1:10, with angle-of-rotation indicator.
DN: 25 to 150,
for fitting between two flanges
pe: max. 120 “WC (300 mbar),
with manual adjustment, with square shaft for mounting a gear motor GT or with free shaft end,
max. medium temperature: 212°F (100°C) disc with clearance