Title:
給水配管の故障による通水不能時における応急給水方法とこれに用いる切換弁
Document Type and Number:
Japanese Patent JP7011250
Kind Code:
B2
Abstract:
To provide a switch valve to solve a problem in which: when breakage of a primary side water distribution main pipe occurs, countermeasure is taken to supply water to the secondary side by a water tank truck or the like, while there is no countermeasure for the case of breakage of the secondary side; a water flow test and mud discharge after replacement of a water meter or a maintenance work require long time and many efforts such as disconnection of joint pipes and the like.SOLUTION: A switch valve for emergency water supply comprises a third water passage 23; and a ball valve element 3 that rotates to switch between a normal flow passage for water flow from a primary side to a secondary side and an emergency water passage from the primary side to the third water passage, formed by shutting off water flow to the secondary side. The switch valve for emergency water supply is installed in the secondary side of a water meter 11.SELECTED DRAWING: Figure 6
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Inventors:
Hiroyuki Nakajima
Akane Kaneko
Akane Kaneko
Application Number:
JP2017160042A
Publication Date:
January 26, 2022
Filing Date:
August 23, 2017
Export Citation:
Assignee:
Hiroyuki Nakajima
Maesawa Supply Industry Co., Ltd.
Maesawa Supply Industry Co., Ltd.
International Classes:
E03B7/09; F16K5/06; F16K11/087; F16K11/14; F16K31/44; F16K37/00
Domestic Patent References:
| JP2004124569A | ||||
| JP2012057323A | ||||
| JP58045480U | ||||
| JP2000352083A | ||||
| JP2013151789A | ||||
| JP11082769A | ||||
| JP2004353846A |
Foreign References:
| US8020575 |
Attorney, Agent or Firm:
Kokichi Ishikawa
Kimura Mitsuru
Yasushi Morikawa
Tetsuro Sunaba
Kimura Mitsuru
Yasushi Morikawa
Tetsuro Sunaba