Low-leakage valve apparatus

Details Low-leakage valve apparatus Low-leakage valve apparatus

2006-05-23

2006-05-23

Look, Edward K. (Department: 3751)

Valves and valve actuation

Mechanical movement actuator

Particularly packed or sealed

C251S315040, C251S315040

Reexamination Certificate

active

07048254

ABSTRACT:
A low-leakage valve apparatus which reduces fugitive emissions from valves to the ambient atmosphere. A secondary packing chamber or gland is installed on an existing valve to intercept leakage past the valve's original primary packing gland, which otherwise would escape past the valve stem to the atmosphere.

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www.chemalliance.org web page, Proper Monitoring Essential to Reducing ‘Figitive Emissions’ Under Leak Detection and Repair Programs, May 13, 2003, pp. 1-4.

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