A pneumatic valve Product Overview Haichuan off Valve Co., Ltd. Shanghai production of pneumatic cut off valve, by pneumatic actuators and O type ball valve, pneumatic cut off ball valve connected to the actuator of the direct connection. Pneumatic cut off valve can be equipped with a limit switch box, solenoid valves, valves, etc., can be realized using 0.4-0.7MPa air cutting operation, and send two pairs of passive contact signal indicating valve switch. Pneumatic actuator can be used single-acting and double-acting pneumatic actuators pneumatic actuators. Single acting pneumatic actuator when the power source fails, you can automatically open or closed position in accordance with the requirements set by the system, double-acting pneumatic actuators, after holding breathe. Features: 1. fluid off and circulation. 2. reliable seal, good flow characteristics, flow resistance, easy loading and unloading. 3. The use of direct connection with the connection is simple, compact, stable operation. Applicable scene: especially suitable for viscous media containing particles, fibers nature of the occasion, now the ball is widely used pneumatic cutting petroleum, chemical, metallurgy, light industry, paper, power plants, refrigeration and other areas of work. Second, pneumatic cut off ball valve product images pneumatic three pneumatic valve parts cut material Part name Material name Body WCB 304 (CF8) 316 (CF8M) 316L (CF3M) spheres nitrided 2Cr13 + 304 316 316L stem 2Cr13 304 316 316L ring PTFE (PTFE), PTFE (PPL), for PPL, flexible graphite For medium water, gas, steam, oil and other corrosive nitric acid and other corrosive medium, urea and other corrosive media medium Fourth, pneumatic cut off ball valve technical parameters nominal diameter (mm) 15 20 25 32 40 50 65 80 100 125 150 200 250 300 flow coefficient Kv 21 38 72 112 170 273 384 512 940 1452 2222 3589 5128 7359 Nominal (MPa ) PN1.6,2.5,4.0,6.4MPa leakage soft sealing: zero leakage; hard seal: ≤ 10-5 valve rated flow in the form of two-stage valve (floating ball) two-stage valve (fixed sphere) spool type "O" type ball valve packing polytetrafluoroethylene (PTFE), metal graphite spiral wound gasket flange connection form, welded, threaded quick opening flow characteristic Adjustable DN15-65 DN80-300 250: 1 350: 1 application temperature sealing surface PTFE≤150 ℃, RTFE≤180 ℃, PPL≤300 ℃, hard seal ≤450 ℃ configure actuators can be equipped with GT, AT, AR, AW series of single and double acting pneumatic actuator control mode switch two position control, 4-20mA analog control See: http: //www.shchuanhu.com/products/qidongqiufa/qdqdqf.html