High-pressure, hemi-wedge cartridge valve
First Claim
Patent Images
1. A valve, comprising:
- a valve housing having an inlet and an outlet and being adapted to connect to a pipe, the housing having a cavity therein;
a bonnet adapted to sealingly attach to the housing to form a top of the cavity and a drive stem sealingly extending through the bonnet;
a cartridge having an inlet retaining plate and an outlet retaining plate adapted to fit within the cavity, the plates enclosing a driver, the driver being responsive to rotation of the drive stem, a thrust ball having a central bore, a spacer, a seal assembly having an inlet end and an outlet end, the outlet end of the seal assembly being adapted to move through an opening in the outlet retaining plate of the cartridge to form a seal around the outlet of the valve housing; and
a rotatable valve member operatively connected with the driver, the rotatable valve member having curved surfaces forming a wedge, the wedge having an opening in a thinner section so as to allow flow through the valve housing when the valve member is rotated into an open position and having a thicker section such that the thicker section of the wedge seals against the inlet end of the seal assembly and the outlet end of the seal assembly seals against the valve housing to prevent flow through the valve housing when the valve member is rotated into a closed position.
5 Assignments
0 Petitions
Accused Products
Abstract
A valve having a cartridge that fits within the valve housing and that may be replaced without removing the valve housing from adjoining equipment. The cartridge contains a wedge having curved surfaces and a driver to rotate the wedge from an open to a closed position. When the wedge rotates to the closed position a seal is formed on the convex surface of the wedge and a sealing assembly is moved to form a seal around the outlet of the valve housing.
-
Citations
39 Claims
-
1. A valve, comprising:
-
a valve housing having an inlet and an outlet and being adapted to connect to a pipe, the housing having a cavity therein;
a bonnet adapted to sealingly attach to the housing to form a top of the cavity and a drive stem sealingly extending through the bonnet;
a cartridge having an inlet retaining plate and an outlet retaining plate adapted to fit within the cavity, the plates enclosing a driver, the driver being responsive to rotation of the drive stem, a thrust ball having a central bore, a spacer, a seal assembly having an inlet end and an outlet end, the outlet end of the seal assembly being adapted to move through an opening in the outlet retaining plate of the cartridge to form a seal around the outlet of the valve housing; and
a rotatable valve member operatively connected with the driver, the rotatable valve member having curved surfaces forming a wedge, the wedge having an opening in a thinner section so as to allow flow through the valve housing when the valve member is rotated into an open position and having a thicker section such that the thicker section of the wedge seals against the inlet end of the seal assembly and the outlet end of the seal assembly seals against the valve housing to prevent flow through the valve housing when the valve member is rotated into a closed position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method for repairing a valve without removing the valve from a pipe, comprising:
-
supplying a valve housing having an inlet and an outlet and being adapted to connect to the pipe, the housing having a cavity therein;
supplying a bonnet adapted to sealingly attach to the housing to form a top of the cavity and a drive stem sealingly extending through the bonnet;
supplying a cartridge having an inlet retaining plate and an outlet retaining plate adapted to fit within the cavity, the plates enclosing a driver, the driver being responsive to rotation of the drive stem, a thrust ball having a central bore, a spacer, a seal assembly having an inlet end and an outlet end, the outlet end of the seal assembly being adapted to move through an opening in the outlet retaining plate of the cartridge to form a seal around the outlet of the valve housing;
supplying a rotatable valve member operatively connected with the driver, the rotatable valve member having curved surfaces forming a wedge, the wedge having an opening in a thinner section so as to allow flow through the valve housing when the valve member is rotated into an open position and having a thicker section adapted for sealing against the inlet end of the seal assembly and moving the outlet end of the seal assembly against the valve housing, so as to prevent flow through the valve housing when the valve member is rotated into a closed position; and
when repair or replacement of the valve is indicated, relieving pressure in the valve housing, removing the bonnet and cartridge attached thereto, replacing the cartridge with a selected cartridge and reattaching the bonnet. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. A valve, comprising:
-
a valve housing having an inlet and an outlet and being adapted to connect to a pipe, the housing having a cavity therein;
a bonnet adapted to sealingly attach to the housing to form a top of the cavity and a drive stem sealingly extending through the bonnet;
a cartridge having an inlet retaining plate and an outlet retaining plate adapted to fit within the cavity, the plates enclosing a means for driving the rotation of a rotatable valve member, a thrust ball having a central bore, a means for spacing, a means for moving a sealing surface through an opening in the outlet retaining plate of the cartridge to form a seal around the outlet of the valve housing, the rotatable valve member having curved surfaces forming a wedge, the wedge having an opening in a thinner section so as to allow flow through the valve housing when the valve member is rotated into an open position and having a thicker section such that the thicker section of the wedge seals against an inlet end of the means for moving the sealing surface and an outlet end of the means for moving the sealing surface is moved against the valve housing so as to prevent flow through the valve housing when the valve member is rotated into a closed position. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
-
-
30. A cartridge for a valve having a housing and a cavity therein, comprising:
-
an inlet retaining plate and an outlet retaining plate adapted to fit within the cavity, the plates enclosing a driver, the driver being responsive to rotation of a drive stem of the valve, a thrust ball having a central bore, a spacer, a seal assembly having an inlet end and an outlet end, the outlet end of the seal assembly being adapted to move through an opening in the outlet retaining plate of the cartridge to form a seal around the outlet of the valve housing; and
a rotatable valve member operatively connected with the driver, the rotatable valve member having curved surfaces forming a wedge, the wedge having an opening in a thinner section so as to allow flow through the valve housing when the valve member is rotated into an open position and having a thicker section such that the thicker section of the wedge seals against the inlet end of the seal assembly and the outlet end of the seal assembly seals against the valve housing to prevent flow through the valve housing when the valve member is rotated into a closed position. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39)
-
Specification