Electric speed control butterfly valve DV942X / H, a new generation of variable speed butterfly valve Product Overview for the bit, the valve is changed from the design ideas by mechanical transmission to complete the switching speed of the disc change patterns, according to the different position of the disc was action characteristics, a new design from the electric drive control. Butterfly valve of the series to take to change the frequency of the input current of the electric device to adjust the rotation speed and the output torque of the electric device, in order to control the switching speed of the disc, the disc fast off slow off the two-stage shut down or slow opening, quick opening of a two-stage The purpose of the open. Hydraulic Control Butterfly has the same functionality. Second, the purpose of this valve is suitable for medium to water, seawater the pipeline pump outlet position, both as closed-circuit valve check valve characteristics to avoid and reduce the media backflow in the piping system and water hammer protection tube road. Very reliable power plant, water and other power occasions especially applicable. , Features an electric hoist, with any adjustment, only the back and cut-off function. Easy to operate, safe and reliable. 2, the valve can be continuous slow opening, quick opening or quick closing, slow closing action, and effectively prevent backflow and water hammer pump outlet media. 3, the energy-saving drive, the Quick Closing Section of torque and slow off the lower torque can be achieved with the same ordinary butterfly valve drive motor. 4, the installation in the pump outlet, the butterfly valve also has a common function of the non-return valve and gate valve, therefore valve generation two valves, saving installation space, saving the cost of the pipe network. 5, small flow resistance. When the valve is fully open flow resistance coefficient does not exceed 0.3, so you can save energy and reduce the running costs of the pipeline. 6, when an accident or a power outage, can be controlled by a manually operated butterfly valves open and close. Fourth, the main technical parameters Nominal pressure (MPa) 0.25 0.6 1.0 the nominal pass through strength test of the test pressure (mm) 1000 ~ 2400 800 ~ 2400 500 ~ 1600 0.375 0.90 1.5 0.66 1.1 0.275 seal test for medium water, seawater applicable temperature (° C) ≤ 80 ℃ installation vertical, horizontal V, the implementation of standards, design and manufacture flanges the connection size structure length pressure test GB12238 GB2555-2526-8 GB12221 GB/T13927 six main parts materials Part Name Material Remark valve body, disc, cover HT200, HT250, QT450-10 valve shaft, taper pin 2Cr13 valve body seals 1Cr18Ni9Ti, 2Cr13 disc seals NBR, the 1Cr18Ni9Ti bearing SF-1, SF-2 self-lubricating filler NBR seven, DV942X / H electric governor electric butterfly valve shape profile connectors Dimensions unit: mm PN DN LA H1 H2 DO B1 B2 B3 B4 0.25MPa 1000 410 817 1303 400 225 709 303 770 1200 470 1200 812 1529 400 225 709 303 760 1400 530 1400 1020 1692 400 225 728 303 760 1,600,600,160,011,451,885 400 2,758,433,857,781,800,670 180,013,151,924,400 2,758,793,857,922,000,760 2000 1670 2095 400 2,759,694,508,562,200,840 2200 1739 2487 400 430 11035409952400 910 2400 1699 2595 400 430 1103 540 995 PN DN LA H1 H2 DO B1 B2 B3 B4 0.6MPa 800 318 667 1190 500 175 583 230 683 900 330 745 1245 400 225 709 303 770 1000 410 817 1303 400 225 709 303 760 1200 470 1200 912 1529 400 225 728 303 760 1400 530,140,010,411,693 4,002,758,433,857,781,600 600 160,011,451,885,400 1,800,670,180,013,461,924 400 275 969 275 879 385 792 450 856 2000 760 2000 1670 2095 400 430 11035409952200 840 2200 1739 2487 400 430 1103 540 995 2400 910 2400 1850 2595 400 430 1103 540 995 PN DN LA H1 H2 DO B1 B2 B3 B4 1.0MPa 500 229 548 943 500 145 533 162 610 600 267 583 985 500 175 583 230 683 700 292 612 1075 500 175 583 230 683 800 318 6,771,190,400,225,709,303 770 900 330 745 1245 400 225 709 303 760 1000 410 817 1303 400 225 728 303 760 1200 470 1200 948 1529 400 275 843 385 778 1,400,530,140,011,581,692 400 275 879 385 792 1,600,600,160,012,851,885 400,275,969,450,856