KR200462905Y1 - Frozen to burst prevention device for water pipe - Google Patents

Frozen to burst prevention device for water pipe Download PDF

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Publication number
KR200462905Y1
KR200462905Y1 KR2020120002685U KR20120002685U KR200462905Y1 KR 200462905 Y1 KR200462905 Y1 KR 200462905Y1 KR 2020120002685 U KR2020120002685 U KR 2020120002685U KR 20120002685 U KR20120002685 U KR 20120002685U KR 200462905 Y1 KR200462905 Y1 KR 200462905Y1
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KR
South Korea
Prior art keywords
valve body
water
valve
inner tube
valve member
Prior art date
Application number
KR2020120002685U
Other languages
Korean (ko)
Inventor
양경옥
Original Assignee
양경옥
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Application filed by 양경옥 filed Critical 양경옥
Priority to KR2020120002685U priority Critical patent/KR200462905Y1/en
Application granted granted Critical
Publication of KR200462905Y1 publication Critical patent/KR200462905Y1/en

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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/09—Component parts or accessories
    • E03B7/10—Devices preventing bursting of pipes by freezing
    • E03B7/12—Devices preventing bursting of pipes by freezing by preventing freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K21/00—Fluid-delivery valves, e.g. self-closing valves
    • F16K21/02—Fluid-delivery valves, e.g. self-closing valves providing a continuous small flow

Abstract

The present invention is excessive to the water pipe freeze protection device for preventing the freezing of the winter water pipes, the present invention is formed so that the through-hole in the vertical direction in the inner central portion, the outer diameter is gradually reduced toward the lower direction, the edge portion The valve body is formed with a plurality of bypass passage in the vertical direction coupled to the water pipe; A tubular housing having an upper portion coupled to the valve body to form an operation space gradually increasing in area downward between the inner diameter portion and the outer lower portion of the valve body; It is composed of a valve body inserting portion inserted into the valve body and a housing inserting portion inserted into the housing, and a drainage passage is formed from the inner upper portion to the inner lower portion, and an inlet port communicating with the drainage passage is formed at the upper portion of the valve body insert. A valve member which closes the through-hole and opens the through-hole of the valve body only when water filled in the working space is frozen; A valve member that opens the inner tube of the valve body only when water filled in the liver freezes; An air valve fixed to the exterior to communicate with the top end of the working space and automatically discharging air remaining in the working space to the outside while water is filled in the working space through a bypass passage; A stopper coupled to the lower end of the housing in a state in which a drain passage communicating downwardly in the center is formed; It is to include an elastic member which is interposed between the stopper and the valve member to push the valve member always upwards.

Description

Frozen to burst prevention device for water pipe}

The present invention relates to a water pipe freeze protection device, and more specifically, to prevent the freezing of water pipes, water meter, and faucet by allowing the water to be discharged little by little from the inside of the faucet even when the water freezes due to the freezing temperature. .

As is well known, when the temperature drops below freezing, the water inside the water pipe freezes and the volume increases, causing the water pipe to freeze. To prevent this, the method of wrapping the water pipe with a heat insulating material is most widely used. Even if the water pipes were wrapped with insulation, they had little effect at very low temperatures.

In addition, a method of preventing the freezing of water pipes due to a temperature drop in winter is disclosed by spirally winding a constant temperature heating wire to a water pipe or a water valve and applying power thereto to maintain the water pipe at a constant temperature. Although it is difficult to install a constant temperature heating wire, there is a hassle that a user must apply power. In addition, it is not possible to use the power supply in an area where it is difficult to supply power, there is a problem that can not perform its function even in the event of power failure in winter.

In view of this, in Patent No. 1019819, a through hole is formed in an up-down direction in an inner central part, and is formed to gradually decrease in outer diameter toward a downward direction, and a plurality of bypass passages are formed in an up-down direction in a rim to be coupled to a water pipe. Valve body; A tubular housing having an upper portion coupled to the valve body to form an operating space gradually increasing in area downward between the inner diameter portion and the outer lower portion of the valve body; Comprising a valve body inserting portion inserted into the valve body and a housing inserting portion inserted into the housing, the drainage passage is formed from the inner upper portion to the inner lower portion, while the inlet opening is formed at the upper portion of the valve body inserting portion is always formed. A valve member which closes the through hole of the valve body and opens the through hole of the valve body only when water filled in the working space is frozen; A stopper coupled to a lower end of the housing in a state in which a drain passage communicating downwardly in a central portion thereof is formed; And a water pipe freezing prevention device including an elastic member interposed between the stopper and the valve member to push the valve member upwards at all times.

However, the water pipe freeze protection apparatus according to this patent No. 1019819 is formed so that the valve body gradually decreases in outer diameter as the valve body goes downward, and the upper edge of the water pipe is formed so that the thread is formed for engagement with the housing, which passes in the vertical direction. Even if the bypass passage is formed up and down as close to the thread as possible, the lower end of the bypass passage must be located at the middle of the outer diameter of the main valve body or the lower part of the outer diameter. Since the ice starts to freeze from the water stayed in the working space is reversed through the bypass passage, there is a problem that the lack of water in the working space to push the valve member.

In addition, the above-mentioned water pipe freeze protection device has a large number of parts, such as a valve body, a housing, a valve member, a stopper, and an elastic member, and it takes a lot of time and cost to manufacture individual parts, as well as to assemble the individual parts together. There is also a disadvantage of increased airborne.

In addition, since the water pipe freeze protection device is coupled to the water pipe, a separate connecting material such as a T joint is required, and water can be prevented by freezing the water from the water source to the freeze protection device when winter freezing. In the faucet, the water staying inside freezes, so the tap water is blocked and it is impossible to use.

In addition, before the water pipe freeze protection device is first installed, air is filled in the working space before the water is introduced into the working space through the bypass passage, and in this state, the water is filled in the working space through the bypass passage. As the air inside the space is concentrated at the upper end of the working space, there is no choice but to remain the air. When the water in the working space freezes in winter, the air forms bubbles between the ice, which weakens the density of the ice. Of course, since the water in the working space is frozen, the air is first filled in the air part, and thus the valve operation due to the difference in volume of water and ice is not smoothly performed.

The present invention has been proposed in view of this point, and the water pipe freeze protection device for preventing the freezing of the water pipe, the water meter, and the faucet by allowing the water to be discharged little by little from the inside of the faucet even when the temperature drops below freezing. Is to provide.

In order to solve this problem, the present invention is watertightly coupled to the center of the faucet, and is composed of a concentric circular double tube configuration connected from the top, the exterior is formed so that the inner diameter gradually increases in the downward direction, the inner tube is up and down It is formed in a uniform shape to form a working space in which the inner diameter portion of the outer diameter and the outer diameter portion of the inner tube gradually increases in the downward direction, the upper surface center portion is opened to communicate with the inner tube, the operating space around the upper surface A valve body having a plurality of bypass passages formed therethrough; It consists of an inner tube inserting portion inserted into the inner tube of the valve body, and an outer inserting portion inserted into the outer appearance, and a drainage passage is formed from the inner upper portion to the inner lower portion, while an inlet port is formed at the upper portion of the inner tube inserting portion. A valve member which normally closes the inner tube of the valve body and opens the inner tube of the valve body only when water filled in the working space is frozen; An air valve fixed laterally to the exterior to communicate with the top end of the working space so that the air staying in the working space is automatically discharged to the outside when water is filled in the working space through the bypass passage; A stopper coupled to a lower end portion of the valve body in a state in which a drain passage is formed in a lower portion of the center; And an elastic member interposed between the stopper and the valve member to constantly push the valve member upward.

Preferably, the upper portion of the inner tube of the valve body is formed with a step so that the inner diameter is narrower than the other portion, a ball for selectively opening and closing the step portion between the valve body inner tube and the valve member may be located.

Preferably, at least one packing may be fitted to the outer diameter portion of the inner tube insertion portion of the valve member.

Preferably, the valve body coupling portion is coupled to the upper outer diameter of the valve body in the state in which the water supply passage is formed in the center, the male thread corresponding to the female screw formed in the faucet is formed in the upper circumference to couple the valve body to the faucet Is further provided; An O-ring is fitted inside the upper bypass passage of the valve body so that water introduced through the valve main connector may directly flow into the bypass passage without leaking to other parts.

Preferably, a filtering net may be further installed between the valve body connector and the valve body so as to filter foreign matter from the water flowing through the water supply passage.

Preferably, the air valve is a tubular valve body screwed to the exterior so as to communicate with the top end of the operating space, and the operating space of the valve body on the basis of the position where the valve body is coupled to the exterior. An air passage hole formed to communicate upwardly to an inner position side, a stepped portion formed inside the valve body, and slidably fitted into the valve body to allow air introduced through the air passage hole to the outside through the valve body. When the discharge and the pressure acts, the nail member or the ball-shaped valve member that is in close contact with the stepped to block the water, the O-ring which makes the valve member in watertight contact with the stepped, the valve member is not separated from the valve body A stopper for preventing the stopper and the stopper so that the valve member is positioned in a position where the air passage hole is not blocked. Are integrally formed may comprise a projection for pushing the valve member.

If the freeze protection device is installed at the center of the lower part of the faucet, the water can be discharged smoothly through the faucet without any leaks through the freeze protection device, and the outside temperature is below zero when the faucet is locked. When the water starts to freeze, the water inside the faucet drops downward through the freeze blocker to prevent freezing of water pipes, water meters and the entire faucet.

1 is an exploded perspective view of a water pipe freeze protection apparatus according to the present invention.
Figure 2 is a perspective view of the installation state of the water pipe freeze protection apparatus according to the present invention.
Figure 3 is a normal cross-sectional view of the water pipe freeze protection apparatus according to the present invention.
Figure 4 is a cross-sectional view of the freeze protection state of the water pipe freeze protection device according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the attached drawings.

Water pipe freeze protection device according to the present invention, as shown in the drawing, is not connected to the water pipe, but directly connected to the lower center of the faucet (1), to the valve body 10 coupled to the faucet (1) Valve member 20, stopper 30, the elastic member 40 is made of a combination.

The valve body 10 is a member that is watertightly coupled to the central portion of the lower surface of the faucet 1, and is composed of a concentric double tube type structure connected from the upper side, and the exterior 11 gradually increases inwardly to its inner diameter. The inner tube 12 is formed in a uniform shape up and down to form an operating space 13 in which the inner diameter portion of the outer tube 11 and the outer diameter portion of the inner tube 12 gradually increase in area toward the lower side, and have an upper surface central portion. Is opened to communicate with the inner tube 12, and a plurality of bypass passages 14 communicating with the working space 13 are formed through the upper surface. In the drawing, three bypass passages 14 are illustrated as an example.

The valve member 20 is composed of an inner tube inserting portion 21 inserted into the inner tube 12 of the valve body 10 and an outer insert portion 22 inserted into the outer appearance 11, and has an inner lower portion from the inner upper portion. While the drainage passage 23 is formed in the direction, the inlet 24 communicating with the drainage passage 23 is formed at the upper portion of the inner tube inserting portion 21 to close the inner tube 12 of the valve body 10 at all times. Only when the water filled in the space 13 is frozen, the inner tube 12 of the valve body 10 is opened.

At this time, the valve member 20 itself may serve as a valve, but for more stable and reliable operation, the upper part of the inner tube 12 of the valve body 10 may have the stepped portion 15 so that the inner diameter thereof becomes narrower than the other portions. And a ball 25 for selectively opening and closing the stepped portion 15 between the valve body 10, the inner tube 12, and the valve member 20, and the inner tube 12 and the valve member 20. In order to improve the watertightness therebetween, the outer tube portion of the inner tube inserting portion 21 of the valve member 20 may include a plurality of packings 26 in close contact with the inner tube 12, and the outer 11 and the valve member 20. In order to improve the watertightness between the), one or more packings 27 in close contact with the exterior 11 may be inserted into the outer diameter of the exterior insertion portion 22 of the valve member 20.

In addition, the air valve 60 is fixed to the outer side 11 so as to communicate with the uppermost end of the working space 13 so that the working space 13 is filled with water through the bypass passage 14. The air stayed in is to be automatically discharged to the outside, such an air valve 60, the tubular-shaped valve body 61 is screwed to the exterior 11 to communicate with the top end of the working space 13 and On the basis of the position where the valve body 61 is coupled to the exterior 11, the air passage hole 66 is formed so as to pass upwardly toward the inner position of the operating space of the valve body 66, and the valve body 61 is inside. The stepped portion 62 formed in the valve body 61 and the air slidably fitted into the valve body 61 are discharged to the outside through the valve body 61 and discharged to the outside through the valve body 61. ), The valve member 63 of the nail shape to close the water is in close contact with the valve member, and the valve member 63 is watertight with the step (62). O-ring 64 to be brought into contact, a stopper 65 for preventing the valve member 63 from being separated from the valve body 61, and the valve member 63 in a position where the air passage hole 66 is not blocked. The valve member 63 may be formed integrally with the stopper 65 so as to push the valve member 63, and the valve member 63 may have a ball shape made of a material that can float in water. .

The stopper 30 is coupled to the lower end of the exterior 11 of the valve body 10 in a state in which a drain passage 31 is formed in the lower portion of the center, and between the stopper 30 and the valve member 20. An elastic member 40, such as a compression coil spring, which pushes the member 20 upwards and upwards is always formed.

In addition, the valve body 10 may be directly connected to the faucet 1, but in this case, the faucet connection portion should be formed thick for the reinforcement of the valve body 10. The valve body 10 may be formed with an inner pipe 12. When injection molding with the double pipe configuration of (11), shrinkage difference due to the difference in the thickness of the faucet connection portion and the other portion of the faucet 11 is generated, thereby forming a uniform roundness of the inner tube 12 and the entire appearance 11. In this invention, the valve body is coupled to the upper outer diameter of the valve body 10 in a state in which the water supply passage 51 is formed at the center, and a male screw corresponding to the female screw formed at the faucet 1 is formed at the upper circumference of the valve body. It is further provided with a valve body connector 50 for coupling (10) to the faucet (1).

When the valve body connector 50 is provided with one more, the entire thickness of the exterior 11 may be the same when the injection molding of the valve body 10 is performed, thereby forming a uniform circle of the inner tube 12 and the entire exterior 11. This can be done.

When the valve body connector 50 is provided, there is a possibility of leakage between these members 10 and 50 when the valve body connector 50 and the valve body 10 are coupled, so that the upper bypass passage of the upper surface of the valve body 10 ( 14, the O-ring 16 is fitted to allow the water introduced through the valve body connector 50 to flow directly into the bypass passage 14 without leaking to other parts.

In addition, the present invention is directly applied to the tap water, and the tap water may include foreign matter, the inlet through the water supply passage 51 between the valve body connector 50 and the valve body 10 for more stable and reliable operation. A filtering net (not shown) may be further installed to filter foreign substances in the water.

The water pipe freeze protection device according to the present invention configured as described above is normal, that is, when the external temperature is an image, the elastic member 40 made of a compression coil spring is to push the valve member 20 upward by the repulsive force, As the inner tube inserting portion 21 of the valve member 20 pushes the ball 25 upward, the ball 25 comes into close contact with the step of the inner tube 12 of the valve body 10 and the faucet ( 1) The water inside is not leaked.

In this state, the water inside the faucet 1 is discharged downward through a plurality of bypass passages 14 formed between the upper circumference of the valve body 10 and the operation space 14, In the lower part of the bypass passage 14, an operating space 13 is formed which gradually increases in area downward between the inner tube 12 and the outer 11 of the valve body 10, and the valve body 10 is formed. Since the outer surface insertion part 22 of the valve member 20 is fitted in a watertight manner at the lower side of the), the working space 13 is filled with water that has passed through the bypass passage 14 to maintain its state.

That is, when the outside temperature is an image, there is no leak through the water pipe freeze protection device according to the present invention, and it can be seen that it can operate in the same manner as a general water system.

In addition, when the water is turned on in the state where the water pipe freeze protection device according to the present invention is initially installed, the air inside the working space 13 is upward when the water is filled in the working space 13 through the bypass passage 14. The air collected in the upward direction is introduced into the valve body 61 through the air passage hole 66 of the valve body 61 screwed to communicate with the uppermost end of the working space 13, and thus the valve member 63. And the water is drawn out through the space between the valve body 61 and the water gradually rises, and in the state in which all the air inside the working space 13 is removed, water is introduced through the air passage hole 66 and the water pressure thereof. By acting on the valve member 63 to push the valve member 63 in the outward direction, the valve member 63 can be brought into close contact with the step 62 inside the valve body 61. The valve member 63 has an O-ring. Since the 64 is fitted, the valve member 63 and the step 6 are formed by the O-ring 64. 2) Watertightness can be prevented by close contact with water tightly.

At this time, the air passage hole 66 is formed so that the valve body 61 passes upward to the inner side of the operating space of the valve body 61 on the basis of the position of completion of the coupling to the exterior 11, the working space ( 13) the inlet of the air passage hole 66 is located on the top end side it can be seen that all the air inside the working space 13 can be discharged to the outside through the air passage hole (66).

Although not shown, the position of the air through hole 66 may be changed according to the rotational position thereof when the valve body 61 is screwed, and thus the same as the direction of the air through hole 66 is displayed on the outside of the valve body 61. It is apparent that the screw coupling to properly adjust the rotation position of the valve body 61 by.

On the other hand, when the outside temperature drops below zero, and the faucet 1 is locked, the water filled inside the faucet 1 and the inside of the water pipe freeze protection device according to the present invention starts to freeze, and the operating space 13 is As the area gradually increases toward the downward direction, freezing is made from the upper part of the operating space 13 having the narrowest area among the faucets 1 and the inside of the water pipe freeze protection device according to the present invention. Since there is no air layer on the upper side of (13), pressure is gradually applied only downward of the working space 13 by ice that is frozen.

When the water inside the working space 13 gradually freezes from the upper portion, the ice in the frozen state of water is naturally inserted in the lower portion of the working space 13 according to the volume difference between the water and the ice. The part 22 is pushed downward, and the bypass passage 14 is located at the upper end of the working space 13, so that freezing starts from the bypass passage 14, and any backflow occurs through the bypass passage 14. Will not be.

When the outer tube insertion portion 22 of the valve member 20 is pushed downward, the inner tube insertion portion 21 also moves downward while the ball 25 is moved from the step portion 15 of the inner tube 12 of the valve body 10. Spaced apart, the inner tube 12 of the valve body 10 is maintained in a watertight state by the packing 26 fitted to the outer diameter portion of the inner tube insertion portion 21 of the valve member 20, so that the water inside the faucet 1 The drain passage 23 inside the valve member 20 flows into the inner tube 12 of the valve body 10 and is through the inlet 24 of the upper portion of the inner tube insert 21 of the valve member 20. Through the inner diameter portion 11 of the valve body 10 and the drain passage 31 of the stopper 30 can be sequentially discharged downward.

Therefore, even if the external temperature drops below zero and the faucet 1 is locked, even if the outside temperature drops below zero, the water inside the faucet 1 may be discharged downward little by little through the water pipe freeze protection device according to the present invention. It is possible to prevent the water inside the faucet 1, the water pipe, and the water meter from being completely frozen, thus preventing the freezing of the water faucet 1, the water pipe, and the water meter connected thereto, and of course, regardless of the temperature. If you turn on (1), water can be discharged at any time.

Of course, when the external air temperature is warmed and the image is thawed, the ice in the working space 13 is thawed, and the elastic member 40 made of the compressed coil spring interposed between the valve member 20 and the stopper 30 opens the valve member 20. Obviously, it can be pushed upward to return to its original state.

In addition, all the members applied to the water pipe freeze protection apparatus according to the present invention may be made of a metal material such as stainless steel or non-ferrous metal, or may be made of a synthetic resin material, so that the material is not limited.

1: faucet 10: valve body
11: appearance 12: inner tube
13: operating space 14: bypass
15,62: step 16,64: O-ring
20,63: valve member 21: inner tube insert
22: exterior insertion portion 23, 31: drainage passage
24: inlet 25: ball
26,27 Packing 30,65 Cap
40: elastic member 50: valve body connector
51: water supply passage 60: air valve
61: valve body 65a: projection
66: air passage

Claims (6)

Consisting of a concentric circular double tube configuration from the top, between the inner diameter portion of the outer diameter and the outer diameter portion of the inner tube forms an operating space gradually wider toward the downward direction, the upper surface central portion is opened to communicate with the inner tube, A valve body having a plurality of bypass passages formed therebetween through an upper circumference thereof; It consists of an inner tube inserting portion inserted into the inner tube of the valve body, and an outer inserting portion inserted into the outer appearance, and a drainage passage is formed from the inner upper portion to the inner lower portion, while an inlet port is formed at the upper portion of the inner tube inserting portion. A valve member which normally closes the inner tube of the valve body and opens the inner tube of the valve body only when water filled in the working space is frozen; A stopper coupled to the lower end of the exterior of the valve body in a state in which a drain passage communicating downwardly in a central portion thereof is formed; In the water pipe freeze protection device including an elastic member interposed between the stopper and the valve member to push the valve member always upwards,
The valve body is watertightly coupled to the center of the lower surface of the faucet, the appearance of the valve body is formed so that the inner diameter gradually increases toward the downward direction, the inner tube of the valve body is formed in a uniform shape up and down;
It is further provided with an air valve which is fixed laterally to the exterior to communicate with the top end of the working space is filled with water in the working space through the bypass passage to automatically discharge the air stayed in the working space to the outside Water pipe freeze protection device characterized in that. delete delete The method of claim 1,
It is coupled to the upper outer diameter portion of the valve body in the state in which the water supply passage is formed in the center, the upper periphery is formed with a male screw corresponding to the female screw formed in the faucet is further provided with a valve body connector for coupling the valve body to the faucet ;
An o-ring is fitted inside the upper bypass passage of the valve body, so that water introduced through the valve main connector is directly introduced into the bypass passage without leaking to other parts. The method of claim 4, wherein
Water pipe freeze protection device characterized in that the filtering net is further installed between the valve body connector and the valve body to filter foreign matter in the water flowing through the water supply passage. The method of claim 1,
The air valve,
A tubular valve body screwed to the exterior so as to communicate with the top end of the operating space, and the valve body to communicate upward to the inner position of the operating space of the valve body based on the position where the valve body is coupled to the exterior. The formed air passage hole, the stepped portion formed inside the valve body, and slidably fitted inside the valve body, the air introduced through the air passing hole is discharged to the outside through the valve body and the stepped when the hydraulic pressure is applied A nail-shaped or ball-shaped valve member that is in close contact with water, an O-ring that allows the valve member to be in watertight contact with the step, a stopper that prevents the valve member from being separated from the valve body, and the valve member The valve member is formed integrally with the stopper so that the air passage hole is located in a position not blocking the air passage hole. Water pipe freeze protection device including a protrusion to boost the pressure.
KR2020120002685U 2012-04-03 2012-04-03 Frozen to burst prevention device for water pipe KR200462905Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2020120002685U KR200462905Y1 (en) 2012-04-03 2012-04-03 Frozen to burst prevention device for water pipe

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Application Number Priority Date Filing Date Title
KR2020120002685U KR200462905Y1 (en) 2012-04-03 2012-04-03 Frozen to burst prevention device for water pipe

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113883328A (en) * 2021-10-26 2022-01-04 温州联越自控阀门有限公司 Anti-freezing valve

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101019819B1 (en) * 2010-11-23 2011-03-04 양성은 Frozen to burst prevention device for water pipe
KR101134344B1 (en) 2009-10-15 2012-04-09 주식회사 서원기술 Auto Drain Valve

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101134344B1 (en) 2009-10-15 2012-04-09 주식회사 서원기술 Auto Drain Valve
KR101019819B1 (en) * 2010-11-23 2011-03-04 양성은 Frozen to burst prevention device for water pipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113883328A (en) * 2021-10-26 2022-01-04 温州联越自控阀门有限公司 Anti-freezing valve
CN113883328B (en) * 2021-10-26 2024-03-19 河北洲际重工有限公司 Antifreezing valve

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