Gate valve

with handwheelflangeforged steel

There are three types of bonnet designs for forged steel gate valves. The first is the bolted bonnet. The valve designed according to this design form has the valve body and the bonnet connected with bolts and nuts, and wound gaskets (made of 316+ flexible graphite) Sealing. Metal ring connection can also be used when the customer has special requirements. The second design form is the welded bonnet. According to this design form, the valve body and the bonnet are connected by threads and fully welded. The customer has special The penetration welding connection can also be used when required. The third type is the self-sealing 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.