Valves including multiple seats and related assemblies and methods
AssigneeFlowserve Management Company
InventorMark Rain
Life of this patent
Estimating the term…
Abstract
Valve assemblies include a valve body having a fluid passage through the valve body and a valve member disposed in a chamber of the valve body. The valve assembly further includes a first seat and a second seat, where both seats are configured to contact and provide a seal between the valve body and the valve member to at least partially inhibit fluid flow through the fluid passage. Methods of providing a seal in a valve include forcing a primary seat into a seat portion of a valve body to provide a seal between a valve member and the valve body with the primary seat and deflecting at least one arm of a secondary seat to provide another seal between the valve member and the valve body with the secondary seat.
Claims20
A method of providing one or more seals in a valve, the method comprising:
- forcing a primary seat into a seat portion of a valve body to provide a seal between a valve member and the valve body with the primary seat;
- and
- deflecting at least one arm of a secondary seat to provide another seal between the valve member and the valve body with the secondary seat.
A method of providing one or more seals in a valve, the method comprising:
- flowing a fluid through a fluid passage of a valve body, the valve body including a valve member configured to selectively control flow of the fluid through the fluid passage;
- in a first position of the valve member, at least partially inhibiting flow of the fluid through the fluid passage with a rigid seat by defining a seal between a seat portion of the valve body and the valve member;
- and
- in a second position of the valve member, at least partially inhibiting flow of the fluid through the fluid passage with only a flexible seat by defining another seal between the seat portion of the valve body and the valve member.
A method of providing one or more seals in a valve, the method comprising:
- flowing a fluid through a fluid passage of a valve body, the valve body including a valve member configured to selectively control flow of the fluid through the fluid passage;
- at least partially inhibiting flow of the fluid through the fluid passage with a rigid seat by defining a seal between a seat portion of the valve body and the valve member;
- and
- at least partially inhibiting flow of the fluid through the fluid passage with a flexible seat by defining another seal between the seat portion of the valve body and the valve member, comprising:
- deflecting a portion of the flexible seat toward the seat portion of the valve body in response to a force applied to the flexible seat;
- and
- contacting the seat portion of the valve body with the portion of the flexible seat.
Dependencies are inferred from the claim text.