Title:
VACUUM VALVE
Document Type and Number:
Japanese Patent JP3423116
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To adjust a gas liquid ratio between air, sucked in a sewer pipe in a vacuum, and sewage, to a proper value and to stabilize suction and conveyance of sewage.
SOLUTION: A vacuum valve 15 is provided with a liquid level detecting pipe A (37) wherein the rise of a liquid level in a tank 11 is converted into an air pressure, which is exerted on a liquid level detecting diaphragm of a controller, and another liquid level detecting pipe B (201) located in parallel to the liquid level detecting pipe A. A check valve 202 is located in the middle of a communicating passage between the liquid level detecting pipe A and the controller part, and the liquid lever detecting pipe B is connected to a communication passage to intercommunicate the check valve 202 and a controller part 27.
Inventors:
Satoshi Otsuka
Yasuo Yamabe
Yasuo Yamabe
Application Number:
JP18258095A
Publication Date:
July 07, 2003
Filing Date:
July 19, 1995
Export Citation:
Assignee:
Sekisui Chemical Co.,Ltd.
International Classes:
E03F3/00; F16K24/00; (IPC1-7): F16K24/00; E03F3/00
Domestic Patent References:
| JP771650A |