Butterfly valves for control ratios up to 10:1, prepared for attachment of an actuator IC 20 or IC 40 and for fitting between two flanges. BVA, BVAF for continuous control of an air flow rate, BVG, BVGF for continuous control of a gas flow rate, BVH, BVHS for continuous or staged control of a hot air or flue gas flow rate, BVG, BVGF, BVA, BVAF: pu max. 500 mbar, DN 40 to 150, medium temperature: -20 to +60°C. BVH, BVHS: pu max. 150 mbar, DN 40 to 100, medium temperature: max. +450°C. BVG, BVA can also be supplied with manual adjustment. BVGF, BVAF work clearance-free and the control command is executed without delay. BVH, BVHS: in conjunction with the stop bar, the TWINDISC valve disc ensures very low leakage rates.
Технические характеристики
CharacteristicsTypebutterflyFunctionair-fuel ratio controlMediafor gas, for airDN
Min.: 40 mm (1.575 in)
Max.: 150 mm (5.906 in)
Pressure
Min.: 150 mbar (2.2 psi)
Max.: 500 mbar (7.3 psi)
Temperature
Min.: -20 °C (-4 °F)
Max.: 450 °C (842 °F)
