Title:
Retrofit second packing chamber for quarter-turn valves
Document Type and Number:
WIPO Patent Application WO1996015402
Kind Code:
A3
Abstract:
A retrofit second packing chamber for quarter-turn valves that permits existing valves to be modified so as to meet modern emission standards without requiring replacement of the valves, and which can be assembled to existing valves in a simple, efficient manner at reasonable cost. The retrofit second packing chamber comprises an assembly which defines a second packing chamber to be assembled to the existing first packing chamber of a valve in series therewith so as to substantially increase the protection against undesired emissions from the valve.
Inventors:
PAKULA BARRY S (US)
Application Number:
PCT/US1995/013567
Publication Date:
July 18, 1996
Filing Date:
October 11, 1995
Export Citation:
Assignee:
PAKULA BARRY S (US)
International Classes:
F16K41/02; (IPC1-7): F16K41/04
Foreign References:
| US3787060A | 1974-01-22 | |||
| US4972867A | 1990-11-27 | |||
| US5192049A | 1993-03-09 |
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