Title:
水抜きバルブ
Document Type and Number:
Japanese Patent JP6660164
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To simply enable operation confirmation of a valve mechanism almost without needing manpower and further enable operation confirmation of the valve mechanism with normal operation, to thereby improve inspection efficiency.SOLUTION: A drain valve includes: a body 10 having a water inlet 11 connected to a pipe body in witch water flows, and also having a discharge port 20 capable of discharging water to the outside; and a valve mechanism 30 having a pressure receiving chamber 50 into which water in the body 10 flows, and configured to open the discharge port 20 when a water pressure of the pressure receiving chamber 50 is equal to or less than a predetermined pressure and close the discharge port 20 when the water pressure exceeds the predetermined pressure. Provided is a forced on-off valve 60 that when the water pressure of the pressure receiving chamber 50 exceeds the predetermined pressure to close the discharge port 20, discharges water in the pressure receiving chamber 50 to forcibly make the pressure of the pressure receiving chamber 50 equal to or less than the predetermined pressure.SELECTED DRAWING: Figure 2
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Inventors:
Tetsuya Komatsu
Application Number:
JP2015239379A
Publication Date:
March 11, 2020
Filing Date:
December 08, 2015
Export Citation:
Assignee:
Ben Co., Ltd.
International Classes:
F16K31/365; F16K51/00
Domestic Patent References:
| JP2007192273A | ||||
| JP2003207201A | ||||
| JP51043100U | ||||
| JP50136029U | ||||
| JP48079325A | ||||
| JP47001667Y1 |
Foreign References:
| WO2010018180A1 |
Attorney, Agent or Firm:
Yusaku Maruoka