Gate Valve Body Drilling for Oilfield Service
Oilfield gate valves control the flow of crude oil, gas, and drilling fluids. The valve body needs a through-bore for the gate that slides across the seat to open or close the flow path. The bore must be straight and round so the gate seals properly at high pressure. In my experience, a gate valve that leaks at rated pressure is almost always a bore concentricity problem, not a seat material problem. ...