Title:
PIPING SYSTEM FREE OF STAGNATION OF FLUID
Document Type and Number:
WIPO Patent Application WO/1992/014965
Kind Code:
A1
Abstract:
A piping system free of stagnation of fluid and intends to provide a piping system to high purity water and chemical liquid pipe lines in which no fluid flow stagnates in piping on the upstream side of a valve part and in a valve even when the valve is closed, to say nothing of the time when the valve is open. A diaphragm valve (3) provided with bypass means (3b) disposed on the upstream side of the valve part (3a) is mounted to a sub-line (2) branched from the main line (1) of piping, a pressure reduction device (4) provided with a pressure reduction part having a throttle part (4a) and bypass means (4b) communicating with the throttle part (4a) is mounted to the main line (1) on the downstream side of the branching point from the sub-line (2) and both bypass means (3b) and (4b) communicate with each other.
Inventors:
YOKOYAMA IKUO (JP)
Application Number:
PCT/JP1992/000180
Publication Date:
September 03, 1992
Filing Date:
February 20, 1992
Export Citation:
Assignee:
ASAHI ORGANIC CHEM IND (JP)
International Classes:
F17D1/08; E03B7/07; F16K5/06; F16K51/00; F16L55/027; (IPC1-7): F17D1/08
Foreign References:
| JPS6088300A | 1985-05-18 | |||
| JPS6014232B2 | 1985-04-12 | |||
| JPS5421604A | 1979-02-19 |
Other References:
See also references of EP 0608416A4
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