Plug type control valve having improved means protecting the...

Details Plug type control valve having improved means protecting the... Plug type control valve having improved means protecting the...

B - Operations, Transporting

01

J

251/87

B01J 8/08 (2006.01) B01J 8/00 (2006.01) F16K 41/02 (2006.01)

Patent

CA 1052364

PLUG TYPE CONTROL VALVE HAVING IMPROVED MEANS PROTECTING THE STEM THEREOF Abstract of the Disclosure A plug type valve for use in handling the flow of particulate catalyst is disclosed. In catalytic cracking equipment, it is necessary to regenerate the catalyst. The flow of catalyst to and form the regenerator must be controlled. A plug valve is disclosed for control of the flow of catalyst and the valve includes a tapered spear-like plug formed of a sacrificial material mounted on a stem. The stem is protected against the abrasive action of the particulate catalyst by means of a cylindrical spaced shield below the valve element and a circular jet of stem ejected downwardly below the shield and parallel to the stem. Protection of the stem against the abrasive effects of the catalyst is provided.

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