Title:
APPARATUS FOR AND METHOD OF DISCHARGING AND RECOVERING PIG MATERIAL
Document Type and Number:
Japanese Patent JPS51148977
Kind Code:
A
Abstract:
A housing structure confines a ball-shaped valve member with a flow passage therethrough. One end of the flow passage serves as a cavity to receive a pipeline scraper in the form of a pig ball and a grid retains the pig ball while permitting fluid flow through the passage. The valve ball cavity may register with the chamber of a normally closed magazine to receive a pig ball therefrom or to release a pig ball thereto. The valve ball cavity may also register with one of the two ports of the housing structure to launch or retrieve a pig ball therethrough. The valve ball is completely enclosed by the housing structure with a seal at the entrance to the magazine. The magazine has a bleeder valve to the atmosphere and also has a by-pass valve to equalize the fluid pressure in the magazine with the fluid pressure in the pipeline. The valve ball has compensating freedom to move towards and away from the seal. Manually operable gearing rotates the valve ball 90 DEG between its two alternate positions.
Inventors:
MOORISU SUREGAAZU
JIYON DEI MATSUCHIYOU
JIYON DEI MATSUCHIYOU
Application Number:
JP13828075A
Publication Date:
December 21, 1976
Filing Date:
November 19, 1975
Export Citation:
Assignee:
WILLIS OIL TOOL CO
International Classes:
B08B9/053; F16L55/46; (IPC1-7): B08B9/00
Domestic Patent References:
| JPS358064Y1 | ||||
| JP38006916A | ||||
| JPS4739527A |