Pneumatic valve specifications

Pneumatic valve is a device, in the shop instructions shall indicate the following data: the valve specifications; Model; Pressure of work; Manufacturing standards; The valve body material; Stem material; The sealing material; Valve shaft packing material; Stem bushing material; Internal and external anti-corrosion materials; Start operation direction; Revolutions; Open-close torque under the conditions of work pressure; Factory name; Manufacture date; Factory number; Weight; Connecting flange of the aperture, the number of holes, the center hole spacing; To indicate the overall graphic way control the size of length, width and height; The valve flow resistance coefficient; Effective number of opening and closing; The valve factory inspection data and the matters needing attention of installation and maintenance, etc. In the double control of pneumatic valves, pneumatic valve equipment manufacturer of professional, welcome to inquire.