Invention Grant
- Patent Title: Balanced valve trim and method of reducing stem forces on a valve stem
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Application No.: US14974103Application Date: 2015-12-18
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Publication No.: US10094488B2Publication Date: 2018-10-09
- Inventor: Trenton Frank Jackson
- Applicant: FISHER CONTROLS INTERNATIONAL LLC
- Applicant Address: US IA Marshalltown
- Assignee: FISHER CONTROLS INTERNATIONAL LLC
- Current Assignee: FISHER CONTROLS INTERNATIONAL LLC
- Current Assignee Address: US IA Marshalltown
- Agency: Marshall, Gerstein & Borun LLP
- Main IPC: F16K39/02
- IPC: F16K39/02 ; F16K1/12 ; F16K1/36 ; F16K47/04 ; G05D7/01 ; F16K1/38

Abstract:
Valve trim for a valve includes a valve plug having one or more balance ports located along the outer surface of a tapered nose portion of the valve plug. Each balance port is located to be downstream of the throat and spaced from the tip of the tapered nose portion of the valve plug. The valve trim may be use, for example, in a high recovery angle body valve. A high recovery valve with the valve trim may have better recovery performance as well as a smaller spike in stem force through the choked flow transition point. A method of reducing stem forces on a valve stem of sliding stem valve is also provided.
Public/Granted literature
- US20170130868A1 BALANCED VALVE TRIM AND METHOD OF REDUCING STEM FORCES ON A VALVE STEM Public/Granted day:2017-05-11
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