Electric butterfly valve, pneumatic butterfly

ZAJW electric butterfly valve, a rotary valve, the execution unit for the electric unit in the instrument cluster. Soft seal valve seat structure has installed all-metal seat and two, respectively, for normal temperature (-40 ~ 180 ℃) and high temperature (-60 ~ 450 ℃) applications. Respectively, for continuous adjustment and intermittent adjustment. IA with two kinds of mechanical and electronic. Both are acceptable 0-10mA.DC, 4-2010mA.DC signal to operate the valves open and close. The difference is that the latter is the integration of design, will servo amplifier directly into the internal actuator can be realized from the simple to the complex control functions. (For actuators, please see the relevant technical information). This series of products with good sealing performance, rated flow coefficient. In the petroleum, chemical, pharmaceutical, metallurgy, textile, paper and sewage treatment and other production sectors are widely used. The series Nominal have 1.6,4.0,6.4Mpa. Diameter from 25 to 200mm, the input signal 0-10mA.DC, 4-2010mA.DC1-5V.DC like. Allowable leakage levels have Class IV and Class VI. Temperature range of -60 ~ 450 ℃. Features ZSCW pneumatic valve is a rotary valve. Small size, light weight, rated flow coefficient, etc., is particularly suitable for large-diameter, high flow, Nongzhuo slurry or boiler furnace flue gas control. This series of products are standards-based, high-temperature and sealing three. Nominal grade products have 0.1,0.25,0.6,1.0MPa, the 50mm diameter to 1400mm, spillage rank has II and VI level, flow characteristics such as the approximate percentage. When the pneumatic switch to manual, using side-mounted hand wheel method (control figure III); pull pin, up lever handle, worm gear meshing with the worm, pressed into the pin, rotating the hand wheel can change the flow cross-section. When manually switched to the pneumatic lever handle to the contrary.