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CN | EN

Pneumatic gate valve with manual wedge

Technical Parameters

Product model: Z641H
Nominal diameter: DN50~800mm
Nominal pressure: PN1.6~4.0MPa
Ambient temperature: Standard type :-20~80℃
Body material: carbon steel (C), stainless steel (P4, P6)

Product Details

Product overview
Pneumatic manual wedge gate valves are low support open-stem gate valves with pneumatic actuators (double cylinder with buffering mechanism) and manual and protective mechanisms (manual and self-locking pneumatic to manual changers). The valve adopts double layer cylinder structure, its lifting force is doubled compared with single cylinder pneumatic gate valve. This fundamentally solves the problem that some valve bodies of single cylinder pneumatic gate valves die and can not be opened. Moreover, because the valve has a buffer mechanism, can effectively slow down and light the closing valve, due to the downward impact of the piston caused by the valve plate car sealing surface and valve body sealing surface wear, at the same time, also can avoid the phenomenon of gate jam.
Because of its advanced technology, reliable performance, easy operation and maintenance, it has been widely used by petroleum, chemical industry, metallurgy, electric power, sea transportation and other departments as the transmission of gas, liquid medium pipeline opening and closing device.


Main dimensions-PN16(16bar)

Nominal diameter DN Overall dimension Connection size
L H H1 H2 do D D1 D2 C f N-D
50 250 790 420 840 180 165 125 99 20 3 4-18
80 280 910 460 990 200 200 160 132 20 3 8-18
100 300 1050 560 1150 250 220 180 156 22 3 8-18
150 350 1240 660 1390 320 285 240 211 14 3 8-22
200 400 1520 810 1720 400 340 295 266 24 3 12-22
250 450 1700 930 1950 400 405 355 319 26 3 12-26
300 500 1930 1090 2230 450 460 410 370 28 4 12-26
350 550 2160 1230 2510 450 520 470 429 30 4 16-26
400 600 1330 1360 2730 500 580 525 480 32 4 16-30
450 650 2540 1510 2990 500 640 585 548 34 4 20-30
500 700 2750 1660 2150 550 715 650 609 36 4 20-33
600 800 3080 1910 3680 550 840 770 720 38 5 20-36
700 900 3570 2200 4270 600 910 840 794 40 5 24-36
800 1000 1025 950 901 42 5 24-39

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