GB Bellows Wedge Gate Valve
manufacturer: Shanghai MeiYan Yi Pump & Valve Co., Ltd.
Eml: sales@1bengfa.com
Tel: +86 (21) 5640 2009
Mob: +86 138 1691 3072（WeChat Same Account）
product drawing
GB bellows wedge gate valves
The structural features and diagrams of GB bellows wedge gate valve
GB bellows wedge gate valve is widely used in the pipeline of the petroleum, chemical, pharmaceutical, fertilizer, power industry and other working conditions, which the nominal pressure is PN1.6 ~ 16MPa, and the working temperature is -29 ~ 350 ℃. It is used to cut off or connect the medium in the pipe. The main features of GB bellows wedge gate valve: 1. reasonable structure, reliable sealing, excellent performance, attractive appearance; 2. the sealing surface is welded by Co-based alloy, it is wear-resisting, corrosion-resistant, good anti-friction performance, and has a long service life. 3. the stem quenched and tempered, and the surface nitriding treatment, have a good corrosion resistance and anti-friction performance. 4. double sealed makes the performance more reliable. 5. stem movement position indicator is more intuitive. 6. the parts materials and flanges, butt welding end dimensions are selected according to actual working conditions or the users’ requests, in order to meet the needs of a variety of projects.
Dimensions & constructral diagram
GB bellows wedge gate valve constructral diagram
The materials of main parts
| No | Name | Material |
| 1 | body | WCB WC1、WC6、WC9、C5 CF8、CF8M、CF3、CF3M |
| 2 | disc | 25、1Cr13、2Cr13 1Cr18Ni9Ti、0Cr18Ni12Mo2Ti 20Cr1Mo1V、25Cr2MoV |
| 3 | stem | 25、1Cr13、2Cr13 1Cr18Ni9Ti、0Cr18Ni12Mo2Ti 20Cr1Mo1V、25Cr2MoV |
| 4 | bellows assembly | 1Cr18Ni9Ti、304、316、304L、316L |
| 5 | support | WCB、WC1、WC6、WC9、C5 CF8、CF8M、CF3、CF3M、 |
| 6 | gasket | Flexible graphite and stainless steel、PTFE |
| 7 | bonnet | WCB WC1、WC6、WC9、C5 CF8、CF8M、CF3、CF3M |
| 8 | hexagon nut | 0Cr18Ni9Ti、0Cr18Ni12Mo2Ti 35CrMoV、25Cr2MoV |
| 9 | stud bolt | 0Cr18Ni9Ti、0Cr18Ni12Mo2Ti 35CrMoV、25Cr2MoV |
| 10 | packing | flexible graphite |
| 11 | packing gland | WCB WC1、WC6、WC9、C5 CF8、CF8M、CF3、CF3M |
| 12 | stem nut | copper alloy |
| 13 | handwheel | WCB QT400-18 |
The technical specifications
| structural form | BB-BG-OS & Y |
| drive mode | manual |
| electric | |
| design criteria | GB12234 |
| face-to-face dimension | GB12221 |
| connection flange | GB9113、JB79、HG20596 |
| test and inspection | JB/T 9092、GB/T13927 |
The performance specifications
| nominal pressure（MPa） | shell Test pressure（MPa） | sealing test pressure (MPa) | Suitable temperature (℃) | Applicable medium |
| 1.6 | 2.4 | 1.76 | ≤350℃ | Water,steam,oil,etc |
| 2.5 | 3.75 | 2.75 | ||
| 4.0 | 6.0 | 4.4 | ||
| 6.4 | 9.6 | 7.04 |
The connection dimensions and weight
| model | WZ41-16 | ||||||||||||||
| pressure class | PN16 | ||||||||||||||
| caliber | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 |
| L | 108 | 117 | 127 | 140 | 165 | 178 | 190 | 203 | 229 | 254 | 267 | 292 | 330 | 356 | 381 |
| H | 200 | 210 | 250 | 260 | 290 | 370 | 398 | 440 | 490 | 530 | 580 | 670 | 760 | 850 | 950 |
| W | 120 | 140 | 140 | 180 | 200 | 220 | 260 | 280 | 300 | 340 | 400 | 450 | 450 | 500 | 500 |
| weight（kg） | 8 | 9 | 10 | 15 | 22 | 30 | 43 | 57 | 73 | 105 | 150 | 190 | 270 | 380 | 480 |
| model | WZ41-25 | ||||||||||||||
| pressure class | PN25 | ||||||||||||||
| caliber | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 |
| L | 140 | 152 | 165 | 178 | 190 | 216 | 241 | 283 | 305 | 381 | 403 | 419 | 457 | 502 | 762 |
| H | 200 | 210 | 250 | 260 | 290 | 370 | 398 | 440 | 490 | 530 | 580 | 670 | 760 | 850 | 980 |
| W | 120 | 140 | 140 | 180 | 200 | 220 | 260 | 280 | 300 | 340 | 400 | 450 | 450 | 500 | 500 |
| weight（kg） | 9 | 10 | 12 | 17 | 23 | 34 | 50 | 65 | 82 | 115 | 165 | 210 | 300 | 420 | 540 |
| model | YDGWZ41-40 | ||||||||||||||
| pressure class | PN40 | ||||||||||||||
| caliber | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 |
| L | 165 | 190 | 216 | 229 | 241 | 292 | 330 | 356 | 432 | 508 | 559 | 660 | 787 | 838 | 889 |
| H | 200 | 210 | 250 | 260 | 290 | 370 | 398 | 440 | 490 | 530 | 580 | 670 | 760 | 850 | 980 |
| W | 120 | 140 | 140 | 180 | 200 | 220 | 260 | 280 | 300 | 340 | 400 | 450 | 450 | 500 | 500 |
| weight（kg） | 9 | 10 | 12 | 18 | 25 | 38 | 53 | 70 | 88 | 125 | 175 | 225 | 310 | 440 | 560 |
