# US 9,752,702 B2 · Valve for abnormal liquid

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- Number: US 9,752,702 B2
- Document ID: US9752702B2
- Status: Granted
- Kind: B2
- Application number: 14/726,338
- Filed: 2015-05-29
- Published: 2015-12-03
- Granted: 2017-09-05
- Earliest claimed: 2014-05-29
- Assignees: Fumoto Giken Co., Ltd.
- Applicants: Fumoto Giken Co., Ltd.
- Inventors: Ryohei Yamamoto; Yuho Yamamoto; Naoyuki Yamamoto
- Web page: https://patentgrep.com/patent/US9752702B2

## CPC

- F16K 39/06: for taps or cocks
- E03B 7/12: by preventing freezing
- F16K 5/06: with plugs having spherical surfaces; Packings therefor
- F16K 5/0642: {the spherical plug being insertable from one and only one side of the housing}
- F16K 5/0647: {Spindles or actuating means}
- F16K 5/08: Details
- F16K 37/0075: {For recording or indicating the functioning of a valve in combination with test equipment}
- Y10T 137/0318: Processes
- Y10T 137/1189: Freeze condition responsive safety systems
- F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)}
- E03B: INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER (drilling wells, obtaining fluids in general from wells E21B; pipe-line systems in general F17D)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

An operating valve includes a valve chamber which is formed in a main body having a passage, a valve body which is housed in the valve chamber and has a passage corresponding to the passage of the main body, a rotary shaft which is detachably connected to the valve body, an operating member which operates a rotation of the rotary shaft, and a bias member which biases the rotary shaft to a position of the valve body.

## Claims

### Claim 1

A valve for abnormal liquid, comprising:
a main body which includes a connecting part to be detachably mounted to a flow passageway of the abnormal liquid, and a passage communicating with the flow passageway of the abnormal liquid at the time of mounting;
a valve chamber which is formed in the main body and has a hole corresponding to the passage;
a valve body which is housed in the valve chamber and has a passage corresponding to the passage of the main body, the valve body performing switching operation by rotating with respect to the passage of the main body;
a seal member which prevents the abnormal liquid that is present in the passage of the main body from entering the valve chamber when the passage of the valve body corresponds to the passage of the main body;
a rotary shaft which is housed in the main body, the rotary shaft being connected to the valve body at least in a state where the abnormal liquid is not frozen, and being connected so as to be movable in an axial direction;
an operating member which is connected to the rotary shaft in the main body and projects outside the main body, the operating member operating a rotation of the rotary shaft;
a bias member which biases the rotary shaft to a position of the valve body;
a connecting hole formed in the valve body, the connecting hole communicating with the passage in the valve body;
an engaging projection formed at a base end of the rotary shaft, the engaging projection being engaged with the connecting hole, an entire surface of a base end of the engaging projection exposed to the passage in the valve body; and
a display unit which displays a status of a freeze so as to be able to be checked from outside of the main body by displaying a movement of the rotary shaft.

### Claim 2

A valve for abnormal liquid, comprising:
a main body which includes a connecting part detachably mounted to a flow passageway of the abnormal liquid, and a passage communicating with the flow passageway of the abnormal liquid at the time of mounting;
a valve chamber which is formed in the main body, the valve chamber having a hole corresponding to the passage and a hole communicating with an outside;
a valve body which is housed in the valve chamber and has a passage corresponding to the passage of the main body, the valve body performing switching operation by rotating with respect to the passage of the main body;
a rotary shaft which is connected to the valve body and housed in the main body; an operating member which is connected to the rotary shaft in the main body and projects outside the main body, the operating member operating a rotation of the rotary shaft;
a resin which is poured from the hole communicating with the outside into a space between an inner surface of the valve chamber and the valve body;
a connecting hole formed in the valve body, the connecting hole communicating with the passage in the valve body;
an engaging projection formed at a base end of the rotary shaft, the engaging projection being engaged with the connecting hole, an entire surface of a base end of the engaging projection exposed to the passage in the valve body; and
a display unit which displays a status of a freeze so as to be able to be checked from outside of the main body by displaying a movement of the rotary shaft.

### Claim 3 (depends on 2)

The valve for abnormal liquid according to claim 2, wherein a release agent is applied to a surface of the valve body.

### Claim 4

A valve for abnormal liquid, comprising:
a main body which includes a connecting part detachably mounted to a flow passageway of the abnormal liquid, and a passage communicating with the flow passageway of the abnormal liquid at the time of mounting;
a valve chamber which is formed in the main body and has a hole corresponding to the passage;
a valve body which is housed in the valve chamber and has a passage corresponding to the passage of the main body, the valve body performing switching operation by rotating with respect to the passage of the main body;
a rotary shaft which is connected to the valve body and housed in the main body; an operating member which is connected to the rotary shaft in the main body and projects outside the main body, the operating member operating a rotation of the rotary shaft;
a seal member which is formed to fill in a space between an inner surface of the valve chamber and the valve body, and which prevents the abnormal liquid present in the passage of the main body from entering the valve chamber;
a connecting hole formed in the valve body, the connecting hole communicating with the passage in the valve body;
an engaging projection formed at a base end of the rotary shaft, the engaging projection being engaged with the connecting hole, an entire surface of a base end of the engaging projection exposed to the passage in the valve body; and
a display unit which displays a status of a freeze so as to be able to be checked from outside of the main body by displaying a movement of the rotary shaft.