Back to results
US 2014/0110617 A1Published application
Plug valve with integrated hard face seat
AssigneePGI International, Ltd.
InventorPeter Mark Middleton
Life of this patent
Estimating the term…
Abstract
A plug valve includes a valve body (10) and a valve stem (30) supporting a plug (32). A seat is formed on and is integral with the valve body. The seat includes a seating surface (16) above and below the passageway connecting the fluid inlet and the fluid outlet. The seating surface provides a seal with the plug. A method of forming the seat on the valve body is disclosed.
Claims19
A plug valve, comprising:
- a valve body having a flow line connecting a fluid inlet and a fluid outlet;
- a valve stem having a plug supported on an end of the valve stem for controlling flow through the valve body;
- and
- a seat formed on and integral with the valve body and including a seating surface above and below the flow line interconnecting the fluid inlet and the fluid outlet, the seating surface providing a seal with the plug.
1 more element
The plug valve as defined in claim 4, wherein the flow line between the fluid inlet and the fluid outlet has a substantially straight line axis.
A plug valve, comprising:
- a valve body having a flow line connecting a fluid inlet and a fluid outlet;
- a valve stem having a plug supported on an end of the valve stem for controlling flow through the valve body, the plug having an interior metal surface;
- and
- a seat formed on and integral with the valve body, the seat including a seating surface above and below the flow line interconnecting the fluid inlet and the fluid outlet, the seating surface providing a seal with the plug, the seat on the valve body having a metal interior surface, such that a metal-to-metal seal is made between the plug and the seat.
1 more element
A method of sealing a plug valve, comprising:
- providing a valve body having a flow line connecting a fluid inlet and a fluid outlet;
- supporting a plug on an end of the valve stem for controlling flow through the valve body;
- and
- forming a seat on and integral with the valve body, the seat including a seating surface above and below the flow line interconnecting the fluid inlet and the fluid outlet, the seating surface providing a seal with the plug.
1 more element
Dependencies are inferred from the claim text.