JP2000001884A - Water path branch member, water stop member and discharge device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water path branch member excellent in dimensional accuracy and durability by using a material having good processability and anticorrosiveness. SOLUTION: An inflow port, outflow port, and branch outflow port are equipped to an exterior wall, and a main water path from the inflow port to the outflow port and a branch water path branched from the main water path and coming to the branch outflow port are formed. In this case, at least a part of an interior wall for the main water path and an inner wall for the branch water path has a brass material having an apparent Zn content of 37 to 46 wt.% and Sn content of 0.5 to 7 wt.%. Thus, a high dimensional accuracy and excellent durability can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water channel branching member and a water stopping member, and to a water discharging device provided with these members.

[0002]

2. Description of the Related Art FIG. 1 shows a water spouting device provided with a water channel branching member. This water spouting device includes a water spouting device main body 1, a branch fitting 2, a cartridge 3 for controlling water discharge temperature and flow rate, and a cartridge 3 with a branch fitting. The cover 2 includes a cover nut 4, a cover 5, and a lever handle 6.

A branch outlet 7 is formed on a side surface of the branch fitting 2, and the branch outlet 7 is provided with a hot water supply hose 12 through a cap nut 8, a strainer 9, a water stopcock 10, and a packing 11.
The hot water supply hose 12 is also connected to a terminal device such as a dishwasher (not shown).

In the above-described water discharge device, the hot water and the hot water supplied from the water supply pipe (not shown) connected below the water discharge device main body 1 are supplied to the inside of the cartridge 3 by operating the lever handle 6 at an appropriate temperature and amount. The mixed water is supplied to the water discharge port 1a at the tip of the water discharge device main body 1.

On the other hand, a part of the hot water supplied from the hot water supply pipe branches off from the branch outlet 7 before reaching the cartridge 3 and is supplied to the dishwasher or the like via the hot water supply hose 12.

FIG. 2 shows the details of the branch metal fitting 2. The branch metal fitting 2 has a built-in branch member 21, into which two long and short bushings 22, 23 are inserted.

The branch member 21 has a water supply outlet 24b, a hot water supply outlet 25b, a mixed hot water inlet 26 on the upper surface, a water supply branch outlet 24c and a hot water supply outlet 25c on the side surface, and O-rings 27 and 28. ing.

FIG. 3 is a cross-sectional view of the branching member 21. Inside the branching member 21, a water supply channel 24, a hot water supply channel 25,
A mixed hot water channel (not shown) is formed. Water supply channel 24
, A water supply inlet 24a and a water supply outlet 24b at both ends, a water supply branch outlet 24c at the middle, and a hot water supply passage 25 having a water supply inlet 25a, a water supply outlet 25b at both ends, and a water supply branch outlet 25c at the middle. .

A water supply passage 24 has a water supply inlet 24a.
The longer bush 22 is inserted from the side, and closes the water supply branch outlet 24c. On the other hand, since the shorter bush 23 is inserted into the hot water supply passage 25 from the hot water supply inlet 25a side, the hot water supply branch outlet 25c is not closed. Therefore,
Hot water supplied from the hot water inlet 25a is supplied to the hot water branch outlet 25c.
And reaches the branch exit 7.

In the above description, the hot water is branched from the branch outlet 7, but if the short bush 23 is inserted into the water supply channel 24 and the long bush 22 is inserted into the hot water channel 25,
Water is branched from the branch outlet 7.

[0011]

As described above, since the branch member 21 has a structure having a flow path therein, a brass material excellent in forgeability and machinability has been conventionally used as the material. Was.

However, since brass materials always have a problem of corrosion resistance (dezincification corrosion resistance), the use of brass materials with improved corrosion resistance has been conventionally studied. On the other hand, when the corrosion resistance is improved, the workability is reduced, and it is difficult to achieve both the workability and the corrosion resistance with a single material.

Therefore, conventionally, a bronze bush 22 having excellent corrosion resistance is provided on a brass branch member 21 having excellent workability.
23 was also inserted.

However, although the bronze bushes 22 and 23 themselves are excellent in corrosion resistance, the brass branch member 2 is made of brass.
1 and bronze bushes 22 and 23 are different metals,
There has been a new problem of corrosion at the contact surface.

An object of the present invention is to provide a waterway branching member having good dimensional accuracy and excellent durability by using a material having both workability and corrosion resistance.

[0016]

According to the present invention, an outer wall is provided with an inflow hole, an outflow hole, and a branch outflow hole.
Inside, a main flow path from the inflow hole to the outflow hole, and a branch flow path branching from the main flow path to the branch outflow hole, in the waterway branch member, the main flow path inner wall, the branch flow path inner wall At least a portion has an apparent Zn content of 37 to 46.
Since the brass material having a Sn content of 0.5 to 7 wt% in wt% is provided, it is possible to provide a waterway branching member having good dimensional accuracy and excellent durability.

That is, the conventional brass material having excellent dezincification corrosion resistance is inferior in workability such as forgeability and machinability because the crystal structure is made into an α single phase in order to improve the dezincification corrosion resistance. On the other hand, in the present invention, the apparent Zn content is set to 37 to 46 wt%, so that β and γ phases are present at an appropriate ratio in the crystal structure to improve workability such as forgeability and machinability. It became possible to make it. And on the other hand, Sn
The zinc content is set to 0.5 to 7% by weight to ensure the dezincification corrosion resistance.

Here, the term "apparent Zn content" means that A is Cu content [wt%], B is Zn content [wt%], and t is the third element (for example, Sn). Z
When n equivalents and Q are the content of the third element [wt%], “{(B + t · Q) / (A + B + t · Q)} × 10
0 ”is used.

According to an embodiment of the present invention, a plurality of flow paths are provided as a main flow path, such as a water flow path, a hot water flow path, and a mixed hot water flow path of water in the water flow path and hot water in the hot water flow path. It is preferable to apply the present invention to a device having a plurality of flow paths. because,
This is because if such a plurality of flow paths are built in a limited space, the wall thickness of each flow path cannot be made so large, and the demand for improvement in the dezincification corrosion resistance is higher.

Further, at least a part of the inner wall of the main flow passage and the inner wall of the branch flow passage made of the brass material as described above is formed by cutting or forging, and is formed by a pipe material inserted into the base material. Is also good. In particular, if a plurality of main flow paths and branch flow paths are provided and a pipe material is inserted into the base material to close the branch flow path, two types of water path branching members such as a hot water supply branch member and a water supply branch member are provided. There is no need to prepare components.

As for the crystal structure of the brass material, it is possible to improve the hot forging property by setting the average crystal grain size to 15 μm or less. Performance can be improved.

More specifically, the area ratio of the β phase having good machinability is set to 15% or more to secure the machinability, and Sn in the β phase is secured.
By making the concentration 1.5% by weight or more, dezincification corrosion resistance is secured. Such a crystal structure is obtained by controlling the cooling rate of the crystal phase from the transformation temperature range, for example, by quenching to adjust the crystal phase ratio and the Sn concentration in the crystal phase.

Further, the area ratio of the α phase is 40 to 94%,
Phase area ratio is 3 to 30%, γ phase area ratio is 3 to 30
%, The cutting property is secured by the existence of the β phase and the hardness difference between the α and γ phase grain boundaries, and the dezincification corrosion resistance is secured by surrounding the β phase with the γ phase having a Sn concentration of 8 wt% or more. ing.

In another embodiment, β has a poor zinc-free corrosion resistance.
Phase area ratio is 2% or less, Sn concentration in γ phase is 8wt%
As described above, the dezincification corrosion resistance is secured, the area ratio of the γ phase is 8 to 15%, and the machinability is secured by the hardness difference between the α and γ phase grain boundaries as the remaining α phase. Such a crystal structure is α +
It is obtained by annealing in the transformation temperature range of γ to reduce the area ratio of β phase.

In the water spouting device having the water channel branching member, the kitchen water spouting device and the water channel branching member are attached.
When it is detachable, there is a strong demand for downsizing the waterway branching member for convenience of appearance. Therefore, if the above-described channel branching member is applied, even if the wall thickness of the internal flow path is thin, it is durable and not only meets the demand for compactness, but also has good workability, so that the dimensional accuracy is reduced even if the size is reduced. It can be secured.

In addition, as terminal devices communicating with the branch outlet, there are devices such as a dishwasher, a water purifier, and an alkali ion water conditioner. In the case of a water supply type device, water is supplied from the branch outlet and a hot water supply type. In the case of equipment, hot water may be supplied from the branch outlet.

According to another aspect of the present invention, an outer wall is provided with an inflow hole and an outflow hole, and a flow path from the inflow hole to the outflow hole, a valve element for opening and closing the flow path, and a valve element are provided inside. And a valve seat to be seated, wherein the inner wall of the flow passage and the valve seat have an apparent Zn content of 37 to 46 wt%.
Thus, it can be integrally formed of a brass material having a Sn content of 0.5 to 7 wt%.

That is, according to the present invention, since a brass material having excellent erosion corrosion resistance is used, there is no need to form a valve seat with a separate member.

The flow path and valve seat of this water-stopping member are formed by cutting or forging.
By setting the average crystal grain size to 15 μm or less, hot forgeability can be improved, and by having a crystal structure of two or more phases, machinability and dezincification corrosion resistance can be improved.

Specifically, the area ratio of the β phase having good machinability is set to 15% or more to secure the machinability, and Sn in the β phase is secured.
By making the concentration 1.5% by weight or more, dezincification corrosion resistance is secured. Such a crystal structure is obtained by controlling the cooling rate of the crystal phase from the transformation temperature range, for example, by quenching to adjust the crystal phase ratio and the Sn concentration in the crystal phase.

In another embodiment, β is poor in dezincification corrosion resistance.
Phase area ratio is 2% or less, Sn concentration in γ phase is 8wt%
As described above, the dezincification corrosion resistance is secured, the area ratio of the γ phase is 8 to 15%, and the machinability is secured by the hardness difference between the α and γ phase grain boundaries as the remaining α phase. Such a crystal structure is α +
It is obtained by annealing in the transformation temperature range of γ to reduce the area ratio of β phase.

The application of such a water stopping member is preferably a water discharging device, particularly a kitchen water discharging device, and is also suitable for a water discharging device to which the water stopping member can be attached and detached.

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment of the present invention, the structure shown in FIG. 1 is used as it is. The difference from the conventional one is that the material composition of the brass branch member 21 shown in FIG. 37-46 wt%, Sn content 0.5-7 wt%
%, And having any of the following crystal structures (1) to (3) eliminates the need for bronze bushes 22 and 23 for ensuring dezincification corrosion resistance, and the brass branch member 21
Is that water supply channel 24 and hot water supply channel 25 are formed directly on the inner wall of the device. Reference numeral 30 denotes a screw-type or packing lid for closing the water supply branch outlet 24c. The crystal structure will be described below.

(1) Two phases of α + β phase, the area ratio of β phase is 15% or more, and the average crystal grain size of the remaining α phase, α, β phase is 1
5 μm or less, Sn concentration in β phase is 1.5 wt% or more.

(2) Mainly two phases of α + γ phase, the area ratio of β phase is less than 2%, the area ratio of γ phase is 8 to 15%, and the average crystal grain size of the remaining α phase and α phase is 15 μm or less. The average crystal grain size (minor diameter) of the γ phase is 8 μm or less, the γ phase is scattered at the grain boundaries of the α phase, and the Sn concentration in the γ phase is 8 wt% or more.

(3) The α + β + γ phase has an α-phase area ratio of 40 to 94%, a β-phase area ratio of 3 to 30%, and γ
The area ratio of the phase is 3 to 30%, and the Sn concentration in the γ phase is 8 wt.
% Or more, and the γ phase is arranged so as to surround the β phase.

The crystal structure (1) is obtained by quenching with a water-cooling or the like from a temperature higher than the transformation temperature range of the crystal phase (for example, 650 ° C.), and the crystal structure (2) is obtained by the transformation temperature range of α + γ (for example, 450 ° C.). ) For 2 h to reduce the area ratio of the β phase. And the crystal structure (3)
From above the transformation temperature range of the crystalline phase (eg 650 ° C.)
It can be obtained by slightly lowering the cooling rate as compared with the crystal structure (1).

Here, the term "apparent Zn content" means that A is Cu content [wt%], B is Zn content [wt%], and t is the third element (for example, Sn). Z
When n equivalents and Q are the content of the third element [wt%], “{(B + t · Q) / (A + B + t · Q)} × 10
0 ”is used.

According to the crystal structures (1) and (2), the following characteristics (A) to (C) can be obtained.

(A) Japanese Industrial Standard JIS C-3604
A cutting resistance index of 80 or more based on a free-cutting brass bar according to

(B) Japan Copper and Brass Association Technical Standard JBMA T
When performing a dezincification corrosion test in accordance with -303, if the maximum dezincification depth direction is parallel to the processing direction, the maximum dezincification depth is 100 μm or less, or the maximum dezincification depth direction is perpendicular to the processing direction. In this case, the properties satisfy the corrosion resistance with a maximum dezincing depth of 70 μm or less. In the case of a forged product, when a dezincification corrosion test was conducted in accordance with the Japan Copper and Brass Association Technical Standard JBMA T-303, this corresponds to the case where the maximum dezincification penetration depth direction is perpendicular to the processing direction. It shall satisfy the characteristics satisfying the corrosion resistance of 70 μm or less.

(C) When a cylindrical sample was exposed to an ammonia atmosphere on a 14% ammonia aqueous solution for 24 hours while applying a load, the maximum stress at which the sample was not cracked was 180 N / m.
Characteristics of m2 or more.

The cutting resistance index of (A) will be described in detail with reference to FIG. 5. In the cutting test, a round bar-shaped sample 31 is turned on a lathe.
100 m / min and 400 m / min
The main component force Fv was measured while cutting at two different speeds. The cutting resistance index is a free-cutting brass bar (Japanese Industrial Standard JIS C-36) which is said to have the best machinability for the main component force.
04) is the percentage of the main component. (The cutting resistance index for each cutting speed was averaged.)

In the (C) SCC resistance test, as shown in FIG. 6, a cylindrical sample 33 was exposed to an NH3 vapor atmosphere for 24 hours in a state where a load was applied vertically to the cylindrical sample 33 in the glass digitizer 32. Later, the occurrence of cracks was investigated.

According to the crystal structures (1) and (2),
Also shows good characteristics in erosion corrosion resistance. FIG.
The method of the erosion corrosion resistance test is shown. In the erosion corrosion resistance test, as shown in FIG. 7, a cylindrical sample 35 having an orifice 34 therein was used, and water was flowed through the orifice 34 at a flow rate of 40 m / sec for a predetermined time, and then 4.9 × 10 ⁵ Resin stopper 36 required to seal orifice 34 under water pressure of Pa (5 kg / cm 2)
The tightening torque for the was measured.

The results of the test shown in FIG. 7 are as shown in FIG. 8, and the brass material having the crystal structures (1) and (2) obtained better characteristics than the conventional example. In the conventional example, the Sn content was 0.5%.
Less than wt% was used.

According to the crystal structures of the above (1) and (2), at the time of forging, (3) a crystal having a β phase ratio of 30 to 80% and an average crystal grain size of 15 μm or less at 480 to 650 ° C. A tissue is obtained, and at a strain rate of 0.00083 / sec.
No damage due to 60% strain, 0.0083 /
Ductility that satisfies at least one of: applying 50% strain at a strain rate of sec to provide no damage and applying 30% strain at a strain rate of 0.083 / sec to provide no damage.

As a result, sufficient elongation can be ensured even when forging is performed at a temperature of 650 ° C. or less, dezincification and adhesion of an oxide film that occur during high-temperature forging at 700 ° C. or more are reduced, and the polishing process after forging is reduced. it can.

Further, the content of Sn is set to 1.5 to 4.0%.
By limiting to (4) 300 to 550 ° C.,
The ratio of the α phase is 44 to 65%, and the ratio of the β phase is 10 to 55.
%, The ratio of the γ phase is 1 to 25%, and the crystal structure has an average crystal grain size of 15 μm or less, and a strain of 50% is given at a strain rate of 0.00083 / sec without breakage.
Ductility that satisfies at least one of the following: no damage by applying 25% strain at a strain rate of 3 / sec and no damage by applying 30% strain at a strain rate of 0.083 / sec. .

As a result, high ductility can be obtained even when forging is performed at a temperature of 550 ° C. or lower, so that dezincification and adhesion of an oxide film can be further reduced.

FIG. 9 shows the shape and dimensions (distance between gauges of 12 mm and outer diameter of φ2.5 mm) of the test pieces for these characteristics.
The test conditions are shown in FIG. The tensile tester used was a mechanical type, the heating was an electric heater, and the atmosphere was air.

FIG. 11 shows the relationship between temperature and elongation.
It can be seen that the crystal structure (4) shows a higher elongation at 450 ° C. than the conventional example. Here, in the conventional example,
At 450 ° C., α + β, β <25%, average particle size> 15 μm
With a crystal structure of

As another embodiment according to the present invention,
Instead of the bronze bushes 22, 23 in FIGS.
The apparent Zn content shown above is 37 to 46 wt%,
The bushes 22 and 23 made of a brass material having a material composition having a Sn content of 0.5 to 7 wt% and having any one of the crystal structures (1) and (2) above may be used.

Also, as shown in FIGS.
Needless to say, the above-described material composition and crystal structure may be applied not only to the branch member 21 having the hot water supply outlet 25b but also to the branch member 21 having only one of the water supply outlet 24b and the hot water supply outlet 25b.

Further, as end devices communicating with the branch outlet, there are devices such as a dishwasher, a water purifier, and an alkali ion water conditioner. In the case of a water supply type device, water is supplied from the branch outlet and a hot water supply type. In the case of equipment, hot water may be supplied from the branch outlet.

FIG. 12 shows a water discharging device provided with a water stopping member according to another embodiment of the present invention. In this water discharging device, a mixing tap 40 and a water supply mounting leg 41 are attached to a packing 4.
2, are connected via a spacer 43 and a packing 44, and the mixing tap 40 and the hot water supply attachment leg 51 are connected via a packing 52, a cheese 53 and a packing 54.

A hot water supply hose 64 is connected to the cheese 53 via a packing 61, a water stopping member 62, and a strainer 63, and a water stopping lever 66 is attached to the water stopping member 62 by a screw 65. I have.

FIG. 13 is a detailed view of the water stopping member 62.
The water stop member 62 includes an inlet 71, an outlet 72, and a valve seat 73, and a built-in valve 74 that moves forward and backward in response to the operation of the water stop lever 66.

The flow path from the inlet 71 to the outlet 72 through the valve seat 73 has an apparent Zn content of 3%.
It is formed integrally from a brass material having a content of 7 to 46 wt% and a Sn content of 0.5 to 7 wt%. And
Since the crystal structure takes the crystal structures (1) to (4) in the same manner as the branch member 21, the cutability, the corrosion resistance, the SCC resistance, and the erosion corrosion resistance are the same as in the branch member 21. It has excellent hot forgeability.

In particular, by making use of the characteristics excellent in erosion corrosion resistance, it is not necessary to make the portion A including the valve seat 73 made of bronze and the other portion B made of general brass as shown in FIG.

[Brief description of the drawings]

FIG. 1 is a perspective view of a water discharge device including a waterway branching member according to an embodiment of the present invention and a conventional technology.

FIG. 2 is a detailed view of a branch fitting 2 according to a conventional waterway branch member.

FIG. 3 is a cross-sectional view of a branch member 21 according to the related art.

FIG. 4 is a sectional view of a branch member 21 according to the embodiment of the present invention.

FIG. 5 is an explanatory diagram of a cutting test of the embodiment.

FIG. 6 shows stress corrosion cracking resistance (SCC resistance) of the embodiment.
Illustration of test

FIG. 7 is an explanatory diagram of an erosion corrosion resistance test of the same embodiment.

FIG. 8 shows the results of an erosion corrosion resistance test of the same embodiment.

FIG. 9 shows the shape of a high-temperature tensile test piece of the embodiment.

FIG. 10 shows high-temperature tensile test conditions of the embodiment.

FIG. 11 shows the results of a high-temperature tensile test of the embodiment and a conventional example (relation between temperature and elongation).

FIG. 12 is a water discharge device including a water stopping member according to another embodiment of the present invention.

FIG. 13 is a sectional view of a water stopping member 62 according to the same embodiment.

FIG. 14 is a cross-sectional view of a conventional water stop member 62.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Water discharge apparatus main body, 1a ... Water discharge port, 2 ... Branch metal fitting, 3 ...
Cartridge, 4 cover nut, 5 cover, 6 lever handle, 7 branch outlet, 8 cap nut, 9 strainer, 10 water stopcock, 11 packing, 12 hot water supply hose, 21 branch member, 22 ... longer bush, 23 ...
Short bush, 24 ... water supply channel, 24a ... water supply inlet, 2
4b: Water supply outlet, 24c: Water supply branch outlet, 25: Hot water supply path, 25a: Hot water supply inlet, 25b: Hot water supply outlet, 25c: Hot water supply branch outlet, 26: Mixed hot water inlet, 27, 28: O-ring, 40: Mixing tap, 41: Water supply mounting leg, 42: Packing, 43: Spacer, 44: Packing, 51: Hot water supply mounting leg, 52: Packing, 53: Cheese, 54: Packing, 61: Packing, 62: Water blocking member, 63: Strainer, 64 hot water supply hose, 65 screws, 66 water stop lever, 71 inlet, 72 outlet, 73 valve seat, 74 valve body

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kenichiro Nakao 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka F-term (in reference) 2D060 BB09 BD01

Claims (19)

[Claims] An outer wall includes an inflow hole, an outflow hole, and a branch outflow hole. Inside the main passage, the main flow passage extends from the inflow hole to the outflow hole, and a branch branches from the main flow passage to the branch outflow hole. And a flow path branch member formed with a flow path, wherein at least a part of the main flow path inner wall and the branch flow path inner wall has an apparent Zn content of 37 to 46 wt%,
A channel branch member comprising a brass material having a content of 0.5 to 7 wt%. 2. The waterway branch member according to claim 1, comprising a plurality of the main flow paths and the branch flow paths. 3. The main flow path includes a water flow path, a hot water flow path,
The water channel branching member according to claim 1 or 2, wherein the water channel is a mixed hot water flow channel of the water and the hot water flow channel. 4. The channel branching member according to claim 1, wherein at least a part of the inner wall of the main channel and the inner wall of the branch channel formed of the brass material are formed by cutting. 5. The channel branch member according to claim 1, wherein at least a part of the main channel inner wall and the branch channel inner wall made of the brass material are formed by forging. 6. The waterway branch according to claim 1, wherein at least a part of the inner wall of the main flow path and the inner wall of the branch flow path made of the brass material are formed of a pipe material inserted into a base material. Element. 7. The waterway branching member according to claim 6, comprising a plurality of the main flow passages and the branch flow passages, and wherein the pipe member closes the branch flow passages by being inserted into the base material. 8. The brass material has an average crystal grain size of 15 μm.
The channel branch member according to any one of claims 1 to 7, which has a crystal structure of m or less. 9. The channel branch member according to claim 8, wherein the brass material has a crystal structure of two or more phases. 10. The brass material has an area ratio of β phase of 15% or more and an Sn concentration in β phase of 1.5 wt.
%. The waterway branching member according to claim 1, having a crystal structure of not less than 10%. 11. The brass material comprises an α + β + γ phase 3
In the phase, the area ratio of the α phase is 40 to 94%, the area ratio of the β phase is 3 to 30%, the area ratio of the γ phase is 3 to 30%, and the Sn concentration in the γ phase is 8 wt% or more, The channel branch member according to any one of claims 1 to 9, wherein the γ phase has a crystal structure surrounding the β phase. 12. The brass material having a crystal phase ratio and a Sn concentration in the crystal phase adjusted by controlling a cooling rate of the crystal phase from a transformation temperature range.
12. The waterway branching member according to any one of items 11 to 11. 13. The brass material has an area ratio of a β phase of 2% or less, an area ratio of a γ phase of 8 to 15%, a balance of an α phase, and a Sn concentration in the γ phase of 8% by weight or more. The channel branch member according to any one of claims 1 to 9, which has a crystal structure. 14. The waterway branching member according to claim 1, wherein the brass material has a reduced area ratio of the β phase by annealing in an α + γ transformation temperature range. 15. A water discharge device comprising the waterway branching member according to claim 1. Description: 16. A water discharging device comprising the water channel branching member according to claim 15, which is a kitchen water discharging device. 17. A water discharge device comprising the water channel branch member according to claim 15, wherein the water channel branch member is detachably attached to the water discharge device. 18. An outer wall having an inflow hole and an outflow hole, and a flow passage from the inflow hole to the outflow hole, a valve body for opening and closing the flow passage, and a valve seat on which the valve body is seated. Wherein the apparent Zn content is 37 to 46 wt% and the Sn content is 0.5 to 7 wt%.
% Water-blocking member that is integrally formed of brass material that is 19. A water discharging apparatus comprising the water stopping member according to claim 18.