Invention Grant
- Patent Title: Fluid valves having an integral safety shut-off
- Patent Title (中): 具有集成安全关闭的流体阀
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Application No.: US13031458Application Date: 2011-02-21
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Publication No.: US08413682B2Publication Date: 2013-04-09
- Inventor: David Joseph Greif
- Applicant: David Joseph Greif
- Applicant Address: US IA Marshalltown
- Assignee: Fisher Controls International, LLC
- Current Assignee: Fisher Controls International, LLC
- Current Assignee Address: US IA Marshalltown
- Agency: Hanley, Flight & Zimmerman, LLC
- Main IPC: F16K27/00
- IPC: F16K27/00

Abstract:
Fluid valves having an integral safety shut-off are described. An example valve assembly includes a body defining a flow path between an inlet and an outlet and opposing seating surfaces. The example valve assembly includes first valve trim including a first valve stem operatively coupled to a first closure member, the first closure member to engage one of the seating surfaces to control fluid flow between the inlet and the outlet during normal operation. The example valve assembly includes second valve trim including a second valve stem operatively coupled to a second closure member, the second closure member to engage the other one of the seating surfaces during a failure condition to restrict fluid flow between the inlet and the outlet. A surface of the second closure member to define a partial wall of the flow path during normal operation such that a profile of the flow path defined by the body and the second closure member is substantially continuous.
Public/Granted literature
- US20110140029A1 FLUID VALVES HAVING AN INTEGRAL SAFETY SHUT-OFF Public/Granted day:2011-06-16
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