Female threaded gate valve
1、Design and manufacture API602、BS5352、ANSI B16.34；
2、Connection ends conform to ANSI
4）Flanged ends conform to ANSI B16.5；JB79
3、Test and inspection conform to：API 598 GB/T13927
4、Gate valve Structure features：
Bolted bonnet，outside screw and yoke
Welded bonnet，outside screw and yoke
5、Materials conform to ANIS/ASTM
