Plug valve

Fluid handling – With cleaner – lubrication added to fluid or liquid sealing... – Cleaning or steam sterilizing

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Details

137375, 222148, 251214, 406132, B08B 902, B65G 5340, F16K 4104

Patent

active

RE0361216

ABSTRACT:
Disclosed is a plug valve adapted to be placed in a chamber or vessel containing fluidized particles to control flow of the fluidized particles between the chamber or vessel and the open end of a conduit which has a contained purging system in a sealed space between the valve stem and guide tube effective to keep the fluidized particles out of the space. A purging medium is provided under pressure to the sealed space as a backup and only purges the space of fluidized particles which enter it due to leakage of one or both of the stuffing boxes. Other features of the plug valve are described.

REFERENCES:
patent: 2378607 (1945-06-01), Watts
patent: 2682277 (1954-06-01), Marshall et al.
patent: 4535801 (1985-08-01), Neale
patent: 4552490 (1985-11-01), Neale
patent: 4827967 (1989-05-01), Junier

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