This Forged steel bellow gate valve has has three types: CS , AS , SS to ASTM.
1. Design and manufacture : By ANSI . B16. 34; API 600. BS1414. MSS-117
2. Dimensions of Connection End:
1)Structural length to ANSI B16. 10; GB/T12221-89.
2)Butt-weld end dimensions to ANSI B16. 25 JB/T12224.
3)Flange end demensions to ANSI B16. 25 JB79.
3. Valve check and test: API 598; GB/T13927; JB/T9092.
4. Structural Features: Bolted bonnet (B. B) and outside screw and yoke(OS& Y) or welded bonnet (W. B) and outside screw and yoke(OB& Y)
5. Materials to the specifications of AISI/ASTM .
6. The main material: A105; F5; F11; F22; 304; 304L; 316; 316L; LF2, etc.
Application of the medium: water, steam, oil, etc.
It used stem seal on demanding occasions, such as high vacuum for the occasion and the nuclear industry. Bellows used in place of ordinary filler valve on the letter or fillers with the letter and can not stem the leakage site to prevent radioactive material or leakage of precious material, or to maintain a high vacuum.