Title:
PLUG VALVE INDICATOR
Document Type and Number:
WIPO Patent Application WO/2010/141651
Kind Code:
A3
Abstract:
A valve has a body having a rotatable valve element. A drive mechanism has a drive input member and a drive output member that are coupled to the valve element for rotating the valve element. A shear member is operatively located within the drive mechanism between the drive input member and the drive output member for shearing in the event the force to rotate the valve element is excessive. The valve has indicia indicating open and closed positions for the valve element An indicator is mounted to output drive member to properly align with the indicia regardless whether the shear member has sheared or not.
Inventors:
WITKOWSKI BRIAN C (US)
KOTAPISH EDWARD C (US)
KOTAPISH EDWARD C (US)
Application Number:
PCT/US2010/037156
Publication Date:
March 10, 2011
Filing Date:
June 03, 2010
Export Citation:
Assignee:
WEIR SPM INC (US)
WITKOWSKI BRIAN C (US)
KOTAPISH EDWARD C (US)
WITKOWSKI BRIAN C (US)
KOTAPISH EDWARD C (US)
International Classes:
F16K5/04; F16K37/00
Foreign References:
| US4969482A | 1990-11-13 | |||
| US4511120A | 1985-04-16 | |||
| US4327768A | 1982-05-04 |
Other References:
See also references of EP 2438338A4
Attorney, Agent or Firm:
DERRINGTON, Keith, R. (P.O. Box 61389Houston, TX, US)
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