97国产看片免费人成视频_卡通动漫日韩一三区_韩国三级中文字幕hd在线_国产成人综合网高清_色偷偷男人的天堂亚洲av_乱爱性全过程免费视频午夜_久久多多屋影院三级_日韩高清在线看AV片_久亚洲第一综合天堂另类专_国产一级男女牲交高潮大片

Hotline: +86-021-57278880
Language:   
PRODUCTS
Baigang valve group brand manufacturing -Globe Valve

Globe Valve summary

Globe valve has good regulating performance, sealing performance is not very good, the structure is simpler than the gate valve, the manufacture and maintenance is more convenient than the gate valve, the fluid resistance is larger, the price is cheaper than the gate valve.


Globe Valve Choose the standard

1 high temperature, high pressure medium pipeline or device should be selected cut-off valve;
Such as thermal power plant, petrochemical system of high temperature, high pressure pipeline selection of cut-off valve is appropriate;
2. The convection resistance requirement on the pipeline is not strict, that is, the pressure loss is not considered;
3. Small valves can choose globe valves, such as needle valve, instrument valve, sampling valve, pressure gauge valve, etc.;
4. There is flow regulation or pressure regulation, but the adjustment accuracy is not high, and the pipeline diameter is relatively small, such as nominal diameter ≤50mm on the pipeline, should choose the cut-off valve or throttle valve;
5 in the urban construction of water supply, heating engineering, nominal diameter small pipeline, can choose cut-off valve, balance valve or plunger valve, such as nominal diameter less than 150mm on the pipeline;
6. Suitable for steam and other media pipelines below DN200;
7. Not suitable for medium with high viscosity;
8. Not suitable for medium containing particles easy to precipitate;
9. It is not suitable for the valve of vent valve and low vacuum system.


Globe Valve standard

BS 1873: Steel globe and stop check valves
GB/T 12235: Flanged and surfacing welded steel globe valves and stop check valves
DIN 3356: Globe valves
Shell SPE 77/103: Steel stop valve according to BS1873

+86-021-57278881
qrCode