Forged steel globe valves are available in three cover designs. The first type is the bolted bonnet. The valve designed according to this design form, the valve body and the bonnet are connected with bolts and nuts, and the wound gasket (made of 316 clip flexible graphite) is sealed. Metal ring connections can also be used when customers have special requirements. The second design form is the welded bonnet. According to this design form, the valve body and the bonnet are threadedly connected and sealed by all welding. Full penetration connection can also be used when customers have special requirements. The third type is the pressure self-tightening bonnet. The valve designed according to this design form has a threaded connection between the valve body and the bonnet, and is sealed by an internal pressure self-sealing ring.
Design structure and features：
Full diameter or reduced diameter
Rising pole bracket type (OS&Y)
Self centering platen pressure sleeve type
Bolted, wound gasket seal bonnet, threaded, welded seal bonnet and threaded internal pressure self - tightening bonnet
Integral upper sealing seat
Socket ends are in accordance with ASME B16.11
Threaded ends (NPT) conform to ANSI/ASME B1.20.1
Disc can be changed to throttling, needle, ball and check type.