~Bolt bonnet OS & Y lifting-round plug.
~Opening and closing of the valves is carried out while the sealed surface is taken off,so it will not cause abrasion on the sealed surface.Double direction.
Principle of opening and closing of the valves
~process of opening and closing of the valves.When opening the valves,first of all,turn the hand wheel to make the plug lifted and separated with the sealed surface,the turn the handled by 90 degree to connect the channel of plug th the channel of valves body.So that the valves is opened.When closing the valves,first of all turn the handle by 90 degree to mark the channel of plug vertical to the channel of valves body,and then the hand wheel to descend the plug.So that the valves is closed.
Design and Manufacture: API 599,API 6D
Face to face(end to end): ANSI B 16.10
Flanged connection: ANSI B16.5
Butt welded end: ANSI B16.25