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Usually, in the process of valve opening and closing, due to different environment and pressure rise, the torque of valve opening will be increased, which will cause seat wear and increase of driving device. The spool of rail ball valve is increased by mechanical contraction action device.
Usually, in the process of valve opening and closing, due to different environment and pressure rise, the torque of valve opening will be increased, which will cause seat wear and increase of driving device. The spool of rail ball valve is increased by mechanical contraction action device. The valve core of track ball valve is pulled away from the valve seat by mechanical contraction action. When the valve core rotates, it does not contact the valve seat and does friction free transmission. When the valve is closed, it is sealed by mechanical pressurization, which means that the economical driving device can be used and sufficient driving force can be ensured to switch the valve. Due to the unique structure design of the orbital ball valve, the switch has no wear and good shut-off performance, which can meet the requirements of various harsh working conditions. The fireproof design and all metal structure design can adapt to various working temperatures from low temperature - 2001 to Zui high + 600 ° C, as well as the special requirements of working conditions including particles and fibers. For standard sulfur resistant rail valve, the material of valve contact medium is designed according to the requirements of NACE mr01-75, and strict quality control is carried out in the manufacturing process. Features of gq47h and gq47f manual top mounted rail ball valves: for traditional ball valves, whether floating or fixed, the ball and valve seat are always in contact, and the switching torque is large, and the sealing surface is easy to be damaged. When the track ball wheel is opened and closed, the ball first deflects and then rotates. During the whole process of opening and closing, the ball and the valve seat are separated, so the valve seat will not be scratched, and the opening and closing torque is small. Gq47h and gq47f manual top mounted rail ball valves are widely used in urban construction, chemical industry, metallurgy, petroleum, pharmaceutical, food, beverage, environmental protection, etc.
Part name | Material Science | ||||
Valve body | WVB | ZG1Cr5Mo | 18-8CrNi | 18-12CrNiMo | |
Valve cover | WVB | ZG1Cr5Mo | 18-8CrNi | 18-12CrNiMo | |
Stem | 2Cr13 | 38CrMoA1 | 1Cr18Ni9Ti | 1Cr18Ni12Mo2aTi | |
Sphere | WCB+HCr | 1Cr5Mo | 18-8CrNi | 18-12CrNiMo | |
Valve seat | PTFE/13Cr/CrNi SS+STELLITE | ||||
Stud | B7/35CrMoA | 1Cr17Ni2 | |||
Nut | 2H/45 | 2Cr13 | |||
Filler | PTFE/Reinforced flexible graphite |
DN | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 |
L | 130 | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 600 | 730 | 850 | 980 | 1100 | 1200 | 1250 |
H1 | 220 | 230 | 240 | 260 | 307 | 360 | 410 | 483 | 512 | 543 | 581 | 617 | 672 | 723 | 758 | 791 | 828 | 870 |
H2 | 450 | 486 | 525 | 550 | 610 | 640 | 640 | 675 | 710 | 740 | 820 | 905 | 955 | 990 | 1050 | 1100 | 1270 | 1450 |
H3 | 415 | 455 | 500 | 535 | 580 | 605 | 605 | 620 | 640 | 685 | 735 | 850 | 900 | 920 | 1100 | 1250 | 1340 | 1555 |
H4 | 370 | 400 | 440 | 460 | 480 | 500 | 550 | 600 | 650 | 713 | 760 | 820 | 875 | 930 | 962 | 1020 | 1285 | 1625 |
DN | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 |
125 |
150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 |
L | 130 | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 600 | 730 | 850 | 980 | 1100 | 1200 | 1250 |
H1 | 230 | 240 | 260 | 280 | 320 | 360 | 436 | 492 | 527 | 607 | 649 | 701 | 750 | 750 | 790 | 832 | 875 | 910 |
H2 | 486 | 525 | 550 | 610 | 640 | 640 | 675 | 710 | 740 | 820 | 905 | 955 | 990 | 105 | 1100 | 1270 | 1450 | |
H3 | 455 | 500 | 535 | 580 | 605 | 605 | 620 | 640 | 685 | 735 | 850 | 900 | 920 | 1100 | 1250 | 1340 | 1550 | |
H4 | 400 | 440 | 460 | 480 | 500 | 550 | 600 | 650 | 713 | 777 | 835 | 890 | 950 | 980 | 1040 | 1305 | 1650 |
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