JPS5918595B2 - Hydrant piping method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a piping method for water supply pipes that is easy to perform water pressure tests and easy to construct.

Normally, a water tap is attached to the wall of a building, such as the vertical wall of a water supply facility in a school, and communicates with the main water pipe via a water supply pipe that runs through it.

In particular, when adding a water tap to the wall of a building, as shown in Figures 1 and 2, connect the elbow 3 to the main water pipe 2 rising on the back side of the building wall 1 before completion. Insert it into the wall 1 at the tip of this elbow 3, screw the male threaded part 6 of the bringing-out member 5 into the female threaded member 4 provided in this elbow 3, and screw the water tap 8 into the female threaded part 7 of the bringing-out member 5. The male threaded portion 9 of is screwed on.

In this conventional piping method, an elbow 3 is placed on the water main pipe 2.
After installation, a test plug 10 is installed in the elbow 3 to perform a water pressure test on the water pipes throughout the building to check for water leakage from each water pipe. No tests have been conducted, so water may leak from the connection between the extending member 5 and the elbow 3, and since the extending member 5 is made of metal such as brass, it is prone to cracking, and water may leak from the cracks. There are cases where a water leak is discovered after finishing the surface of the wall 1 which is to be constructed later, and the wall 1 has to be demolished and the piping has to be re-constructed.

In addition, the wall 1 has many different thicknesses T, and therefore, the extending members 5 must be prepared in various sizes.Also, even if there are many different types of extending members 5, the wall 1 cannot be adjusted to exact dimensions. Because it may not be installed, the takeout member 5 and the water tap 8
A washer 11 had to be installed between the water supply pipe and the water supply pipe, and a large number of members were required to construct the water supply pipe.

Furthermore, in order to penetrate the wall 1 with the extending member 5 and screw it into the elbow 3, a large hole 12 must be formed in the wall 1 in order to rotate the extending member 5 with a tool, and the construction of the wall 1 itself must be completed. It was also a hassle.

In view of these conventional drawbacks, the present invention uses a water supply pipe material with a closed end for the pipe material that connects the water faucet and the water main pipe, thereby making it possible to accurately and easily perform water pressure tests with this water supply pipe material. To provide a piping method for a water faucet which can be adapted to wall thickness, prevents water leakage, and is easy to install.

Embodiments of the present invention will now be described based on the drawings.
An elbow-shaped water supply pipe 15 is connected to the water supply pipe 15 , and a female screw member 16 is embedded in the end of the water supply pipe 15 on the side of the water supply faucet 8 . Part 9
is screwed on.

The distal end surface 17 of the water supply pipe 15 is approximately flush with the surface 18 of the wall 1, and the outer end surface 19 of the female screw member 16 is also flush with these, and the seven flange 20 of the water tap 8 is approximately flush with the surface 18 of the wall 1. It substantially contacts the tip end surface 17 of the tube 15 and the outer end surface 19 of the female threaded member 16, and is attached in close contact with the wall 1.

As is clear from FIG. 5, the female screw member 16 has an adhesive portion 22 provided on the outer periphery of a female metal screw 21, and a stopper portion 23 is formed on the outer end surface 19 side of the adhesive portion 22.

The adhesive portion 22 is made of the same hard vinyl chloride or the like as the water supply pipe 15 and is formed integrally with the acid screw 21, and is adhesively fixed to the water supply pipe 15 by applying an adhesive to the outer peripheral surface of the adhesive portion 22. The adhesive part 22 and the adhesive are attached to the water supply pipe 15.
Any synthetic resin similar to that which can be reliably bonded is sufficient.

Since the water supply pipe 15 has a circular outer circumference, a stopper 2 is provided between the water supply pipe 15 and the wall 1 to prevent it from turning when the water supply faucet 8 is screwed together.
4 or a band 25 as shown in FIG. 1 is provided between the water main pipe 2 and the wall 1.

However, as shown in FIGS. 6 and 7, by forming the wall penetrating portion 26 of the water supply pipe 15 into a hexagonal shape or other polygonal shape such as a quadrangle or hexagon, the rotation can be prevented without providing the stopper 24. can do.

Further, the outer circumferential portion of the female threaded member 16 may be made into a polygon that fits the inner circumferential surface of the water supply pipe 15, or the protrusion 2 that is long in the axial direction may be
A plurality of screws protrude radially outward from the outer circumferential surface of the seven female screws 21,
This protrusion 27 may be bitten into the water supply pipe 15 to provide reinforcement for preventing the water supply pipe 15 from turning.

Further, the circular wall penetrating portion 26 of the water supply pipe 150 may be integrally formed with a protrusion projecting in the radially outward direction similar to the protrusion 27 on its outer peripheral surface.

The polygonal outer peripheral surface or protrusion of the wall penetrating portion 26 is connected to the water supply pipe 15
It serves as a means of stopping rotation.

Next, the piping method of the present invention will be explained in detail.

As shown in FIG. 8, the water supply pipe material 15' of the water supply pipe 15 has a closed end 28 that is adhesively fitted or integrally formed with a lid 29 via an adhesive to prevent water from flowing out. It is closed, and its connecting end 30 is fitted into the water main pipe 2,
A connecting body 31 shown in FIG. 3 is provided as necessary.

The building wall 1 is formed by erecting two boards 33 and 34, filling the space between them with wall material such as concrete, and finishing work such as attaching tiles 35 to the surface is performed after a water pressure test. .

The water supply pipe material 15' is passed through the wall 1 before being filled with the wall material V, and its closed end 28 is made to protrude from the wall 1.
Before or after filling the wall material, perform a water pressure test on all piping in the building to check for leaks.

That is, the water supply pipe material 15' also serves as a test plug.

After the wall material such as concrete has hardened, two boards 33.
The surface 18 is finished by removing the tiles 34 and attaching tiles 35 and the like.

After finishing the wall 10 surface 18, the closed end 28 of the water supply pipe material 15' is cut to form the water supply pipe 15 so that its end surface 17 is flush with the surface 18.

By cutting the closed end 28, the lid 29 is cut off.
Water can now flow out of the water supply pipe 15.

This end face 17 is provided with an inner circumferential chamfer 37 as shown in FIG.

Apply adhesive to the outer peripheral surface of the female screw member 16, insert it into the water supply pipe 15 from the end surface 17, and add the area 37 to the stopper portion 23.
The water supply pipe 15 and the adhesive portion 22 are firmly adhered to each other.

Thereafter, a sealing tape is wrapped around the male threaded part 9 of the water supply faucet 8 and screwed onto the female threaded member 16.
bring it into contact with.

According to the present invention described in detail above, the test plug/water supply pipe material 15' with its tip closed is penetrated through the building wall 1 and its connection end 30 is connected to the water main pipe 2, and the water pressure test and After finishing the building wall, the closed end 28 of the water supply pipe material 15' protruding from the building wall surface 18 is cut off, and the end surface 17 is connected to the building wall surface 18 and the road surface to form the water supply pipe 15.
A female screw member 16 is embedded and fixed in the water supply pipe 15 from its end surface 17 side, and a water supply faucet 8 is screwed onto this female thread member 16, whereby piping for the water supply faucet 8 is performed. Since the pipe material 15' has its tip closed and also serves as a test plug, water pressure tests can be carried out accurately and easily without the need for a special test plug, and the alternative water supply pipe material 15 eliminates the need for a test plug and its attachment/detachment work. ' is the wall surface 18
After finishing, the closed end 28 is cut off to remove dust, so the end face 17 can be used as a road surface to the wall surface 18. Furthermore, one type can be applied to walls 1 of many different thicknesses, compared to conventional Since there is no need for a holding member, washer, etc., the hydrant 8 can always be added in close contact with the wall surface 18, and there are no or very few water leakage points, and the water pressure test shows that the hydrant 8 can be installed in close contact with the wall surface 18. Piping construction up to installation becomes easier.

[Brief explanation of drawings]

1 and 2 show the prior art, FIG. 1 is a partial cross-sectional view showing the piping structure, FIG. 2 is a cross-sectional explanatory view of the water pressure test state, and FIGS. 3 to 5 are the present invention. Fig. 3 is a partial sectional view showing the completed piping structure, and Fig. 4 is a partial sectional view showing the completed piping structure.
The figure is an enlarged cross-sectional view taken along line IV-IV in FIG. 3, FIG. 5 is a partially cutaway perspective view of the female threaded member, and FIGS. 6 and 7 are two modified examples of the water supply pipe and the female threaded member. FIGS. 8 and 9 are enlarged cross-sectional views corresponding to the -IV line, respectively, and are cross-sectional views showing the piping method of the present invention. 1...Building wall, 2...: Water main pipe, 8.
...Water tap, 15...Water pipe, 15'.
... Water supply pipe material, 16 ... Female thread member,
17...Tip surface, 18...Wall surface, 2
6... Wall penetration part, 28... Closed end part,
30... Connection end.

Claims (1)

[Claims] 1 A water supply pipe material that doubles as a test plug with its tip closed is penetrated through the wall of the building and connected to the main water pipe at the connection end, and the water supply that protrudes from the wall surface of the building after the water pressure test and the finishing of the building wall. A water supply pipe is formed by cutting off the closed end of the pipe material and connecting the ends to the wall surface of the building and the road surface, and a female threaded member is embedded and fixed into the water supply pipe from the end face side, and a water supply valve or the like is inserted into this female threaded member. A plumbing method for a water faucet that is characterized by screwing.