GB Bellows Globe 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 globe valves
Main usages
GWJ41 flange straight-through GB bellows globe valve is generally applied to the various operating conditions pipelines of petroleum, chemical, pharmaceutical, fertilizer, power and other industries that nominal pressure is PN1.6 ~ 16MPa and working temperature is -29 ~ 350 °C, used as cutting off or connecting piping media.
Structural features
1、Product structure is reasonable, and the sealing is reliable. The double firm and durable bellows sealing design (bellows + packing) ensures zero leakage of stem. There is no fluid loss, reduced energy losses, increased equipment safety. And it is in compliance with international sealing standards.
2、sealing surface is welded Co-based hard alloy, wear resistance, corrosion-resistant, anti-friction performance, long service life
3、after tempering and surface nitriding treatment, the stem has good corrosive resistance and anti-friction performance; stem lifting position indicator is more intuitive
Dimensions & constructral diagram
GB bellows globe valve constructral diagram
Technical specification
| constructural type | BB-BG-OS & Y |
| driving maode | manual |
| electric | |
| design standard | GB12235 |
| face to face dimension | GB12221 |
| connecting flange | GB9113、JB/T79、HG20596 |
| test and inspection | JB/T 9092、GB/T13927 |
Product performance and specifications
| nominal pressure （MPa） | shell test pressure （MPa） | sealing test pressure (MPa) | suitable temperature (°C) |
| 1.6 | 2.4 | 1.76 | ≤350°C |
| 2.5 | 3.75 | 2.75 | |
| 4.0 | 6.0 | 4.4 | |
| 6.4 | 9.6 | 7.04 |
