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V-type ball valve
Product model: VQ671F / VQ641F
Nominal diameter: Wafer type DN25 ~ 250mm / flange DN25 ~ 500mm
Nominal pressure: PN1.6 ~ 2.5MPa
Connection method: wafer type / flange
Medium temperature: W1: -40 ~ 180 ℃ W2: -40 ~ 300 ℃ W3: -30 ~ 425 ℃ W4: -40 ~ 425 ℃
Body material: carbon steel (C), stainless steel (P4, P6)
Design basis: GB standard
Design Standard: GB / 12237
Connection flange size: GB / 9113, JB / T79
Experiment and inspection: JB / T9092

Characteristics of pneumatic V-type ball valve
1.Compact structure, small size, can be installed horizontally, etc.
2, has excellent adjustment characteristics: V-type ball valve has an approximately equal percentage of inherent flow characteristics and adjustable up to 300: 1 1. Compact structure, small size, can be installed vertically and other advantages.
2, has excellent adjustment characteristics: V-type ball valve has an approximately equal percentage of inherent flow characteristics and adjustable ratio up to 300: 1. The V-valve can therefore provide precise control over a wide range of variations.
3. Maximum flow volume: Due to its streamlined shape and full right-angle rotation control, the maximum volume is particularly high, the flow capacity is particularly large, and the flow resistance is small, so smaller and more economical and practical valve sizes can be used.
4. V-type ball valve adopts double bearing structure, high mechanical stability and low starting torque, which ensure the valve has excellent sensitivity and induction speed.
5. Maximum reliability (safety): the valve body is a whole, sturdy and durable, the operation is not affected by the pressure of the pipeline, and the valve body can be prevented from leaking.
6. Superior sealing performance of metal valve seat: V-type ball valve adopts movable metal valve seat, self-compensating function, and has superior sealing performance and long service life. In the flow direction, the leakage is ≤10-6 × rated flow coefficient.
7, super shearing capacity: V-type ball valve adopts metal hard seal structure, V-type ball valve core and metal valve seat during the rotation process, the V-shaped gap and the valve seat generate a strong shear force can cut off fibers and other impurities , And has a self-cleaning function to avoid valve jamming.

Technical Parameters
Nominal diameter Wafer type DN25 ~ 250mm / flange DN25 ~ 500mm
Connection method Wafer type / flange
Cylinder configuration AT series, GT series, AW series, imported actuator series
Cylinder form Double acting, single acting (spring return)
control method Two-position cut-off (switch type), adjustable type, three-stage type (optional opening)
Nominal pressure 16, 25bar (please specify when ordering with higher pressure)
Air pressure Double acting: 4 ~ 8bar, single acting: 5 ~ 8bar
Medium temperature W1: -40 ~ 180 ℃ W2: -40 ~ 300 ℃ W3: -30 ~ 425 ℃ W4: -40 ~ 425 ℃
Ambient temperature Standard type: -20 ~ 80 ℃
Body material Carbon steel (C), stainless steel (P4, P6)
Seal material Polytetrafluoroethylene (F), para-polybenzene (PPL), metal hard seal (H), hard alloy (Y)

Note: Other special sealing materials or special temperatures can also be designed and manufactured according to customer requirements


PN (MPa) DN (mm) Size (mm)
L Wafer connection Flange connection H
D D D1 D2 D6 b zd
1.6 25 102 64 115 85 5 - 14/16 4-14 233
40 114 82 145/150 110 85/84 - 16/18 4-18 280
50 124 100 160/165 125 100/99 - 16/20 4-18 362
65 145 118 180/185 145 120/188 - 18/20 4-18 377
80 165 130 195/200 160 135/132 - 20 8-18 410
100 194 155 215/220 180 155/150 - 20/22 8-18 423
125 210 185 245/250 210 185/184 - twenty two 8-18 436
150 229 216 280/285 240 210/211 - twenty four 8-23 / 8-22 653
200 243 264 335/340 295 265/266 - 26/24 12-23 / 12-22 703
250 297 328 405 355 320/319 - 30/26 12-25 / 12-26 787
300 338 373 460 410 375/370 - 30/28 12-25 / 12-26 827
2.5 25 102 64 115 85 65 - 16 4-14 233
40 114 82 145/150 110 85/84 - 18 4-18 280
50 124 100 160/165 125 100/99 - 20 4-18 362
65 145 118 160/185 145 120/118 - twenty two 8-18 377
80 165 130 195/200 160 135/132 - 22-24 8-18 410
100 194 155 230/235 190 160/156 - twenty four 8-23 / 8-22 423
125 210 185 270 220 188/184 - 28/26 8-25 / 8-26 436
150 229 216 300 250 218/211 - 30/28 8-25 / 12-26 653
200 243 264 360 310 278/274 - 34/30 12-25 / 12-26 703
250 297 328 425 370 332/330 - 36/32 12-30 787
300 338 373 485 430 390/389 - 40/34 16-30 827


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