Cast steel gate valve designed according to API 600/BS 1414 has a specific and limited feature to block or release the flow of different kinds of fluids in pipelines. The key spec of a cast steel gate valve is that its sealing surface between the gate and its seat is flat.
API 600 cast steel flanged gate valve is indicated and designed for use in many kinds of installations, Cast steel gate valves run completely open or completely closed according to the right of use, because due to the shape of its obturators which have the shape of the wedge, if it were run partially open, there would be a big loss of force.
Cast steel gate valve must be run in lines with just liquid fluids that are not extremely corrosive and do not leave residues, as they can stop the drawer from closing fully. Cast steel flanged gate valve has a bonnet that shuts the control device body, this cap can be bolted bonnet or pressure seal bonnet, generally bolt bonnet that are used for bigger diameters and pressure seal bonnet is for higher pressure lines.