亚洲欧美日韩在线-激情av在线-av在线免费观看网址-久久久久久91-老外毛片-黄色你懂的-久久亚洲精品小早川怜子-意大利性荡欲xxxxxx-国产色一区-国产精品白虎-看一级黄色大片-无码任你躁久久久久久老妇-亚洲av无码专区在线-玖玖热在线视频-天天操天天爽天天干

Gate Valve summary

Good sealing performance, fluid resistance is small, and has a certain adjustment performance;
But the size is large, the structure is complex, the processing is difficult, the sealing surface is easy to wear, not easy to maintain, the opening and closing time is long.
Suitable for making large caliber valves, in addition to steam, oil and other media, but also suitable for containing granular solid and viscosity of the medium, and is suitable for venting and low vacuum system valves.

Gate Valve Scope of application

1. Applicable medium range: water, steam, oil, oxidizing corrosive medium (Z42W-16Ti), acid, alkali flue gas, etc. 

2. Gate valve is suitable for steam, high temperature oil and oil and gas and other media, and frequent switch parts, not for easy coking medium;

3. Single gate or double gate soft seal open stem flat gate valve is used for urban gas transmission pipeline; 

4. Urban water works, single gate or double gate without guide hole rod flat gate valve;

5. For pipelines with suspended particle media, use knife shaped flat gate valve;

Gate Valve standard

• AP I600/ISO 10434 :Bolted steel gate valves for oil and gas
• BS 1414 :Steel gate valves for petroleum, petrochemical and refining industries
• API 603 :150LB corrosion-resistant flanged cast gate valve
• GB/T 12234 :Flanged and butt-welded steel gate valves
• DIN 3352 : Gate valve
• SHELL SPE 77/103 :Steel gate valve according to ISO10434