Ductile cast iron soft seal knife gate valve
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Introduction
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Product alias：No groove double seal knife gate valve
Model STZ73X-10Q
Applicable medium
Suitable for mining and power plant coal, slag, urban sewage treatment, food, paper, medicine, petroleum, chemical and other oil, water, steam pipeline, connecting or cutting off the pipeline cement slurry, gold ore powder, mineral sand, slag, coal slurry, pulp, wood pulp, tailings, fibers, dust, chemical treatment of wastewater, sedimentation tanks, asphalt, silo outlets, fruit juices, grains, slaughterhouse wastewater and other media.
Technical parameters range
New slurry valve features, including the valve body, gate and U-type sealing strip, the bottom of the valve body cavity is equipped with a groove and equipped with elastic U-type sealing strip, when the gate is closed gate down, the bottom edge of the gate and the sealing strip contact and then compression of the sealing strip into the groove to achieve the seal of the valve body and the gate; when the knife gate valve is open gate upward, the bottom edge of the gate and the sealing strip detached from the sealing strip, the sealing strip pops up and the groove leveling, which can prevent knife In the process of using the knife gate valve, the media sediment accumulates in the groove of the valve body cavity, not easy to block, no residue, pipeline cleaning is convenient, thus effectively improving the sealing effect of the knife gate valve, preventing leakage when the valve is closed. In the diameter of the media circulation area using cast stone wear-resistant ring set fixed, making the valve has wear-resistant characteristics, improve the valve body by the medium of the scouring corrosion, greatly improving the service life of the valve, maintenance is more simple; flange sealing surface set O-ring, without the need for another flange gaskets, installation is simple and convenient, the friction coefficient is small, opening and closing flexible.
Main shape and connection size
PN(Mpa) DN(mm) L D D1 D2 C f H N-M Do 1.0 50 50 160 125 100 16 2 285 4-M16 180 65 50 180 145 120 16 2 298 4-M16 180 80 50 195 160 135 17 2 315 4-M16 220 100 50 215 180 155 17 2 365 8-M16 220 125 50 245 210 185 17 2 400 8-M16 230 150 60 280 240 210 21 2 475 8-M20 280 200 60 335 295 265 21 2 540 8-M²C 300 250 70 390 350 320 24 2 630 12-M20 350 300 80 440 400 368 24 2 780 12-M20 400 350 90 500 460 428 33 2 885 16-M20 400 400 100 565 515 482 35 2 990 16-M22 400 450 114 615 565 532 37 2 1100 20-M22 500 500 114 670 620 585 39 2 1200 20-M22 530 600 115 780 725 685 41 2 1450 20-M27 600 700 165 895 840 800 43 2 1700 24-M27 600 800 180 1010 950 905 45 2 2000 24-M30 680 900 190 1110 1050 1005 47 2 2300 28-M30 680
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Ductile cast iron soft seal knife gate valve
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