Title:
SEWAGE CHECK VALVE
Document Type and Number:
Japanese Patent JPS5891980
Kind Code:
A
Abstract:
PURPOSE:To make the passage of sewage ever so easier, by employing a ball valve carrying a valve body supporting plate which keeps off closure of a liquid outlet port by valve body ascension. CONSTITUTION:An inlet port 1 and an outlet port 2 of liquid are aligned in configuration and when a valve body 3A goes up, it is positioned at the center of a valve box 10 whose inner wall is made up almost nearly in a spherical surface so that there is formed a smooth flow passageway, and since intervals l1-l3 of each obstacle are all above 70% to a diameter D of the liquid inlet port 1, sewage also can be passed through in a desirable manner. Likewise, in the valve body 3A, there is not pin connection so that a matter of concern about accumulation and clogging of adhesive solid substances as well as intertwinement of fibrous materials are entirely dispelled; the valve body operates so accurately without fail.
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Inventors:
ICHIKAWA HIDEAKI
INOMATA TETSUO
ANDOU SHIROU
INOMATA TETSUO
ANDOU SHIROU
Application Number:
JP18836981A
Publication Date:
June 01, 1983
Filing Date:
November 26, 1981
Export Citation:
Assignee:
HITACHI LTD
International Classes:
F16K15/04; (IPC1-7): F16K15/03
Domestic Patent References:
| JP54181026B | ||||
| JPS5043388U | 1975-05-01 | |||
| JPS4938589U | 1974-04-05 | |||
| JPS4713271U | 1972-10-17 |
Attorney, Agent or Firm:
Masami Akimoto