CN106594343A - Water hammer prevention pressure reducing valve - Google Patents
Water hammer prevention pressure reducing valve Download PDFInfo
- Publication number
- CN106594343A CN106594343A CN201611257328.7A CN201611257328A CN106594343A CN 106594343 A CN106594343 A CN 106594343A CN 201611257328 A CN201611257328 A CN 201611257328A CN 106594343 A CN106594343 A CN 106594343A
- Authority
- CN
- China
- Prior art keywords
- adjustment sheet
- water
- water hammer
- relief valve
- air relief
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only 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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
Abstract
The invention discloses a water hammer prevention pressure reducing valve which comprises an upper cover, a bottom cover matched with the upper cover, an adjustment sheet located between the upper cover and the bottom cover, and an adjustment spring, wherein an accommodating cavity is formed in the upper cover; the upper part of the accommodating cavity is a stopping edge with a water inlet; the side surface of the accommodating cavity is an annular side wall; a water passing hole is formed in the middle part of the adjustment sheet; an auxiliary runner is formed on the outer side of the water passing hole; the adjustment sheet moves in a fixed direction between the upper cover and the bottom cover through a guide mechanism; a plurality of water outlets are formed in the bottom cover; connection bars are arranged between the water outlets; a stopping pillar connected with the water passing hole in the adjustment sheet in a sleeving manner is upwards formed in the middle of the bottom cover; an inclined stopping surface which is inwards narrowed gradually extends upwards from the stopping pillar; and the adjustment spring is arranged between the adjustment sheet and the bottom cover. Through the adjustment sheet, the adjustment spring, the inclined stopping surface and the stopping pillar, the water hammer prevention pressure reducing valve controls a water passing area and reduces water impact energy so as to control the water discharging flow and the flowing speed; and therefore, the 'water hammer effect' is well eliminated, and the service lives of a pipeline and the valve are guaranteed.
Description
Technical field
The present invention relates to a kind of water and wastewater industry product, particularly relates to a kind of water hammer-resistant air relief valve being implemented at pipe joint.
Background technology
In our daily use water environments, if the hydraulic pressure of pipeline is than larger, when we are turned on and off water route,
" water hammer effect " can be produced, i.e., waterpower is rapidly reached maximum, a larger instantaneous pressure is produced to pipeline or valve etc., this
Individual instantaneous pressure can reach tens times of normal work hydraulic pressure in pipeline even hundreds times.This significantly fluctuation of pressure,
Tubing can be caused to produce judder or noise, and Valve joint and pipeline may be destroyed, there is very big to tubing
Destruction.
The content of the invention
It is an object of the invention to provide a kind of water hammer-resistant air relief valve being implemented at pipe joint, can effectively eliminate " water
Hammer effect ", it is ensured that the service life of pipeline and valve.
In order to reach above-mentioned purpose, the solution of the present invention is：
A kind of water hammer-resistant air relief valve, it include lid and it is upper lid coordinate bottom, the adjustment sheet between upper lid and bottom lid and
Adjust spring；Cavity volume is covered with described, the cavity volume top is the gear edge for being provided with water inlet, and cavity volume side is the side of annular
Wall；The adjustment sheet middle part is provided with water hole, and water hole outside is formed with auxiliary flow, and adjustment sheet is by guiding mechanism in Shang Gai
The displacement and bottom between；The bottom is formed with outlet；The centre of the bottom is upwardly formed a socket adjustment sheet mistake
The bumping post in water hole, the bumping post upwardly extends the oblique retaining surface being inwardly tapered；The regulation spring be located at adjustment sheet and bottom it
Between.
The diameter with diameter greater than the water hole equal to adjustment sheet of the bumping post of the oblique retaining surface bottom.
The auxiliary flow is the gap between the adjustment sheet and upper lid side wall.
The auxiliary flow is several through holes for being formed at the adjustment sheet periphery, and the through hole is around water hole.
The guiding mechanism extends to the guiding rib of upper lid water inlet for oblique retaining surface, and the guiding rib is at least two
Root.
The guiding rib quantity is three, and uniform ring is distributed around bumping post central shaft.
The guiding mechanism is the convex grain of guiding that formed between adjustment sheet and upper lid side wall and gathering sill, the convex grain of the guiding
Two groups are at least with gathering sill.
The adjustment sheet stretch out it is described be oriented to convex grain, the side wall of the upper lid is inwardly formed the gathering sill.
The adjustment sheet outer rim forms the gathering sill, and the side wall of the upper lid is formed and is oriented to convex grain.
The adjustment sheet is the funnel-shaped structure being inwardly tapered from top to bottom.
The adjustment sheet is planar ring structure.
The gear of the adjustment sheet and upper lid is provided with anticollision spring between.
The periphery of the bottom is formed with an annular perisporium, and the perisporium is provided with screw thread and coordinates with the side wall of upper lid.
Several outlets are provided between the perisporium and bumping post, connection perisporium and bumping post are formed between each outlet
Connection rib.
After said structure, the present invention was controlled by adjustment sheet, regulation spring, oblique retaining surface, perisporium and bumping post
The discharge area of water hole and auxiliary flow and the part impact energy of current is converted to into the elastic potential energy of spring, so as to control
The flow and flow velocity of outlet, it is ensured that the flow of the current of outlet and flow velocity keep stable, eliminates well " water hammer effect
Should ", it is ensured that the service life of pipeline and valve.
Description of the drawings
Fig. 1 is the three-dimensional exploded view of first embodiment of the invention；
Fig. 2 is the partial structural diagram of first embodiment of the invention；
Fig. 3 is the part sectioned view of first embodiment of the invention；
Fig. 4 is enforcement state Fig. 1 of first embodiment of the invention（State one）；
Fig. 5 is enforcement state Fig. 2 of first embodiment of the invention（State two；
Fig. 6 is enforcement state Fig. 3 of first embodiment of the invention（State three）；
Fig. 7 is enforcement state Fig. 4 of first embodiment of the invention；
Fig. 8 is enforcement state Fig. 5 of first embodiment of the invention；
Fig. 9 is enforcement state Fig. 6 of first embodiment of the invention；
Figure 10 is the partial structural diagram of second embodiment of the invention；
Figure 11 is the part sectioned view of second embodiment of the invention；
Figure 12 is the partial structural diagram of third embodiment of the invention；
Figure 13 is the part sectioned view of third embodiment of the invention；
Figure 14 is the partial structural diagram of fourth embodiment of the invention；
Figure 15 is the part sectioned view of fourth embodiment of the invention.
Specific embodiment
In order to technical scheme is explained further, the present invention is explained in detail below by specific embodiment
State.
First embodiment：
As shown in Figure 1 to Figure 3, present invention is disclosed a kind of water hammer-resistant air relief valve, it includes the bottom that lid 1 and upper lid 1 coordinate
2nd, in upper lid 1 and bottom 2 adjustment sheet 3 and regulation spring 4；Wherein described adjustment sheet 3 is by a guiding mechanism in upper lid 1
The displacement and bottom 2 between；
Specifically, the upper lid 1 includes a cavity volume 10, and the top of the cavity volume 10 is one to be provided with the gear of water inlet along 12, and sidepiece is
The side wall 11 of one annular, bottom and the screw thread of bottom 2 of the side wall 11 coordinate.
Coordinate Fig. 1, the adjustment sheet 3 is the funnel-shaped structure that diameter is inwardly tapered from top to bottom, and middle part is formed with a mistake
Water hole 31；Internal diameter of the external profile diameter of adjustment sheet 3 less than the side wall 11 of upper lid 1 so that have one between adjustment sheet 3 and side wall 11
Fixed gap constitutes auxiliary flow 5；The adjustment sheet 3 is outwards also extended with least two protuberances 32 to stable regulation piece 3, institute
The external diameter for stating the composition of protuberance 32 is identical with the internal diameter of side wall 11.
The periphery of the bottom 2 is formed with an annular perisporium 21, and the perisporium 21 is provided with screw thread and matches somebody with somebody with the side wall 11 of upper lid 1
Close；The bumping post 22 of the water hole 31 of a socket adjustment sheet 3 is upwardly formed in the middle of the bottom of the bottom 2, the bumping post 22 prolongs upwards
Stretching has oblique retaining surface 23, and the oblique retaining surface 23 is bottom-up tapered, the bumping post 22 of the bottom of the oblique retaining surface 23 with diameter greater than or wait
In the diameter phase of water hole 31；Several outlets 24 are formed between perisporium 21 and bumping post 22, are set between each outlet 24
There is the connection rib 25 of connection perisporium 21 and bumping post 22；.
The guiding mechanism is that oblique retaining surface 23 is upwardly extending is oriented to rib 26, and the guiding rib 26 is at least two,
Preferably three simultaneously central shaft distributions of the uniform ring around bumping post 22.
During present invention assembling, regulation spring 4 described first is first nested with bumping post 22 and lower end is connected on rib；Then
The adjustment sheet 3 is nested with is oriented on rib 26 and against the upper end for adjusting spring 4 again；Finally go up lid 1 by adjustment sheet 3 and adjust
The cover of spring 4 is placed in cavity volume 10, and upper lid side wall 11 coordinates with the screw thread of bottom 2.
The present invention can be implemented on the joint of pipeline, and when being embodied as, the current of pipeline flow from the water inlet 13 of upper lid 1
Enter, coordinate Fig. 4, when the hydraulic pressure of pipeline is relatively low, i.e. state one, hydraulic pressure can not overcome to the power that adjustment sheet 3 applies and adjust spring 4
Elastic force, adjustment sheet 3 is in the top state, and along 12, current cross water to the gear against upper lid 1 from auxiliary flow 5 and water hole 31
Flow out from outlet 24 afterwards, little is affected on the energy loss of current.
Coordinate Fig. 5, when the hydraulic pressure of pipeline gradually increases, i.e. state two, hydraulic pressure gradually overcomes tune to the power that adjustment sheet 3 applies
The elastic force of section spring 4, the energy of water impact is partially converted to the elastic potential energy for adjusting spring 4, makes adjustment sheet 3 pass through Guiding machine
Structure to lower end is moved, and current cross water from the auxiliary flow 5 and water hole 31 in outside, but the water hole 31 of adjustment sheet 3 is tiltedly kept off
The effect in face 23, its discharge area is gradually reduced, and makes part water impact oblique retaining surface 23 and reverse flow, offsets water inlet
Part flow energy, the energy loss of current is affected gradually to increase, water flow impact pressure is reduced so that the flow of outlet 24
Keep stable with flow velocity.
Coordinate Fig. 6, when hydraulic pressure exceedes setting pressure, i.e. state three overcomes regulation spring 4 to the power that adjustment sheet 3 applies
Elastic force, the energy of more water impacts is converted to the elastic potential energy for adjusting spring 4 so that adjustment sheet 3 continues to push, water hole
31 are blocked by bumping post 22, and current cross water from the auxiliary flow 5 of side, and overall discharge area is little, and the current of centre all can quilt
Oblique retaining surface 23 reflects and mutually impacts with the current of water inlet 13, offsets a big chunk flow energy of water inlet 13 so that
The impulsive force of current is substantially reduced, so as to the flow and flow velocity that ensure outlet 24 keep stable.
Further, the perisporium 21 is located in upper lid, i.e., perisporium 21 forms external screw thread and coordinates with side wall 11, such as Fig. 7 and Fig. 8
It is shown, after hydraulic pressure exceedes setting pressure, continue to increase again, adjustment sheet 3 continues to move down, the progressively close perisporium 21 of auxiliary flow 5,
So that the discharge area of auxiliary flow 5 reduces, until adjustment sheet 3 is resisted against on bottom, now overall discharge area is minimum, but
Overall discharge area is not zero, further the flow and flow velocity of control current, it is ensured that the whole flow of outlet 24 and flow velocity are protected
Hold a stable state.
Further, the height of perisporium 21 can also be adjusted, coordinates Fig. 9, after hydraulic pressure exceedes maximum set pressure, adjustment sheet
3 move down so that water hole 31 is blocked by bumping post 22 and auxiliary flow 5 is blocked completely by perisporium 21, form a nearly sealing shape
State so that outlet 24 flows out without current.
Further, the gear of the adjustment sheet 3 and upper lid 1 is also provided with anticollision spring between 12, it is to avoid water inlet 13
Hydraulic pressure drop suddenly suddenly, adjust spring 4 and reset, cause adjustment sheet 3 directly to clash into gear along 12.
Second embodiment：
Coordinate Figure 10 and Figure 11, in the second embodiment of the present invention, be with first embodiment difference：The adjustment sheet
3 external profile diameter is identical with the internal diameter of side wall 11, therefore is not provided with protuberance 32, and in the periphery of adjustment sheet 3 several rings are provided with
Around the through hole 33 of the center of water hole 31, the through hole 33 forms auxiliary flow 5；The auxiliary that current can be formed from through hole 33
Runner 5 flows through, and equally can realize adjusting the purpose of discharge area.
3rd embodiment：
Coordinate Figure 12 and Figure 13, in the third embodiment of the present invention, be with first embodiment difference：The Guiding machine
Structure is described to be oriented to convex grain to form the convex grain 34 of the guiding for cooperating and gathering sill 14 between adjustment sheet 3 and the side wall 11 of upper lid 1
34 and gathering sill 14 be at least two groups；The convex grain 34 and gathering sill 14 of being oriented to can equally control to adjust the displacement of piece 3.
Specifically, the adjustment sheet 3 stretches out the convex grain 34 of guiding, and the side wall 11 of the upper lid 1 is inwardly formed gathering sill
14；The auxiliary flow 5 formed and there is certain interval with the side wall 11 of upper lid 1 in the adjustment sheet 3.
Can certainly be that the adjustment sheet 3 is inwardly formed gathering sill 14, the side wall 11 of the upper lid 1 is formed and is oriented to convex grain
34；The auxiliary flow 5 formed and there is certain interval with the side wall 11 of upper lid 1 in the adjustment sheet 3.
Fourth embodiment：
Coordinate Figure 14 and Figure 15, in the fourth embodiment of the present invention, be with second embodiment difference：The guiding mechanism
It is described to be oriented to convex grain 34 to form the convex grain 34 of guiding and gathering sill 14 that cooperate between adjustment sheet 3 and the side wall 11 of upper lid 1
Two groups are at least with gathering sill 14；
Specifically, the adjustment sheet 3 stretches out the convex grain 34 of guiding, and the side wall 11 of the upper lid 1 is inwardly formed gathering sill 14；Adjust
The periphery of nodal plate 3 is provided with the through hole 33 of several centers of circular water hole 31, and the through hole 33 forms auxiliary flow 5.
Can certainly be that the adjustment sheet 3 is inwardly formed gathering sill 14, the side wall 11 of the upper lid 1 is formed and is oriented to convex grain
34；The periphery of adjustment sheet 3 is provided with the through hole 33 of several centers of circular water hole 31, and the through hole 33 forms auxiliary flow
5。
In each above-mentioned embodiment, the adjustment sheet 3 is funnel-shaped structure, is not limited thereto in real process,
Can also be the loop configuration of plane, by the height for adjusting bumping post 22, can also equally realize above-mentioned effect.
The above embodiments are the invention is not limited in, the combination of above-described embodiment is can also be, adjustment sheet 3 can be reached
Displacement is realized by guiding mechanism and water hole 31 is subject to the effect of oblique retaining surface 23 and bumping post 22 and is caused flow surface
Product changes, and the outside of water hole 31 has auxiliary flow 5 and current are passed through.
To sum up, the present invention controlled water by adjustment sheet 3, regulation spring 4, oblique retaining surface 23, perisporium 21 and bumping post 22
The discharge area of hole 31 and auxiliary flow 5 and the part impact energy of current is converted to into the elastic potential energy of spring, and then is controlled
Make the flow and flow velocity at the mouth of a river 24, it is ensured that the flow of the current of outlet 31 and flow velocity keep stable, and " water is eliminated well
Hammer effect ", so as to ensure the service life of pipeline and valve.
Claims (14)
1. a kind of water hammer-resistant air relief valve, it is characterised in that：Including upper lid and it is upper lid coordinate bottom, positioned at upper lid and bottom lid it
Between adjustment sheet and adjust spring；
Cavity volume is covered with described, the cavity volume top is the gear edge for being provided with water inlet, and cavity volume side is the side wall of annular；
The adjustment sheet middle part is provided with water hole, and water hole outside is formed with auxiliary flow, and adjustment sheet is by guiding mechanism upper
Displacement between lid and bottom lid；
The bottom is formed with outlet；The centre of the bottom is upwardly formed the bumping post of a socket adjustment sheet water hole, described
Bumping post upwardly extends the oblique retaining surface being inwardly tapered；
The regulation spring is located between adjustment sheet and bottom.
2. water hammer-resistant air relief valve as claimed in claim 1, it is characterised in that：The bumping post of the oblique retaining surface bottom with diameter greater than
Equal to the diameter of the water hole of adjustment sheet.
3. water hammer-resistant air relief valve as claimed in claim 1 or 2, it is characterised in that：The auxiliary flow be the adjustment sheet and
Gap between the wall of upper lid side.
4. water hammer-resistant air relief valve as claimed in claim 1 or 2, it is characterised in that：The auxiliary flow is to be formed at the tune
Several through holes of nodal plate periphery, the through hole is around water hole.
5. water hammer-resistant air relief valve as claimed in claim 1 or 2, it is characterised in that：The guiding mechanism is extended to for oblique retaining surface
The guiding rib of upper lid water inlet, the guiding rib is at least two.
6. water hammer-resistant air relief valve as claimed in claim 5, it is characterised in that：The guiding rib quantity is three, and uniformly
Around the distribution of bumping post central shaft.
7. water hammer-resistant air relief valve as claimed in claim 1 or 2, it is characterised in that：The guiding mechanism is adjustment sheet and upper lid
The convex grain of guiding formed between the wall of side and gathering sill, the convex grain of the guiding and gathering sill are at least two groups.
8. water hammer-resistant air relief valve as claimed in claim 7, it is characterised in that：The adjustment sheet stretch out it is described be oriented to it is convex
Grain, the side wall of the upper lid is inwardly formed the gathering sill.
9. water hammer-resistant air relief valve as claimed in claim 7, it is characterised in that：The adjustment sheet outer rim forms the gathering sill,
The side wall of the upper lid is formed and is oriented to convex grain.
10. water hammer-resistant air relief valve as claimed in claim 1 or 2, it is characterised in that：The adjustment sheet is for from top to bottom inwardly gradually
The funnel-shaped structure of contracting.
11. water hammer-resistant air relief valve as claimed in claim 1 or 2, it is characterised in that：The adjustment sheet is planar ring structure.
12. water hammer-resistant air relief valve as claimed in claim 1 or 2, it is characterised in that：The gear of the adjustment sheet and upper lid is between
It is provided with anticollision spring.
13. water hammer-resistant air relief valve as claimed in claim 1 or 2, it is characterised in that：It is annular that the periphery of the bottom is formed with one
Perisporium, the perisporium is provided with screw thread and coordinates with the side wall of upper lid.
14. water hammer-resistant air relief valve as claimed in claim 13, it is characterised in that：Several are provided between the perisporium and bumping post
Outlet, is formed with the connection rib of connection perisporium and bumping post between each outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611257328.7A CN106594343B (en) | 2016-12-30 | 2016-12-30 | Water hammer-resistant pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611257328.7A CN106594343B (en) | 2016-12-30 | 2016-12-30 | Water hammer-resistant pressure reducing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106594343A true CN106594343A (en) | 2017-04-26 |
| CN106594343B CN106594343B (en) | 2019-05-28 |
Family
ID=58583120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611257328.7A Active CN106594343B (en) | 2016-12-30 | 2016-12-30 | Water hammer-resistant pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106594343B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52152428U (en) * | 1976-05-15 | 1977-11-18 | ||
| CN2386288Y (en) * | 1999-06-16 | 2000-07-05 | 王得贤 | Automatic control adjustable valve for agricultural irrigation |
| WO2007002646A2 (en) * | 2005-06-28 | 2007-01-04 | Superb Industries, Inc. | Check valve |
| CN200958636Y (en) * | 2006-09-11 | 2007-10-10 | 中国南车集团北京二七车辆厂 | Single-way assembled cone valve for hydraulic system |
| CN201068579Y (en) * | 2007-06-22 | 2008-06-04 | 上海管威消防系统有限公司 | Outdoor hydrant pressure stabilizing device |
| CN202595805U (en) * | 2012-05-09 | 2012-12-12 | 冯定忠 | Pressure stabilization interface of outdoor fire hydrant |
| CN203703282U (en) * | 2014-01-11 | 2014-07-09 | 水伯格五金(深圳)有限公司 | Anti-burst device of water inlet valve |
| US20150144209A1 (en) * | 2012-06-06 | 2015-05-28 | B.B.A. Participaties B.V. | Cover of a pump |
| CN206468863U (en) * | 2016-12-30 | 2017-09-05 | 厦门立霖卫浴有限公司 | Water hammer-resistant pressure-reducing valve |
-
2016
- 2016-12-30 CN CN201611257328.7A patent/CN106594343B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52152428U (en) * | 1976-05-15 | 1977-11-18 | ||
| CN2386288Y (en) * | 1999-06-16 | 2000-07-05 | 王得贤 | Automatic control adjustable valve for agricultural irrigation |
| WO2007002646A2 (en) * | 2005-06-28 | 2007-01-04 | Superb Industries, Inc. | Check valve |
| CN200958636Y (en) * | 2006-09-11 | 2007-10-10 | 中国南车集团北京二七车辆厂 | Single-way assembled cone valve for hydraulic system |
| CN201068579Y (en) * | 2007-06-22 | 2008-06-04 | 上海管威消防系统有限公司 | Outdoor hydrant pressure stabilizing device |
| CN202595805U (en) * | 2012-05-09 | 2012-12-12 | 冯定忠 | Pressure stabilization interface of outdoor fire hydrant |
| US20150144209A1 (en) * | 2012-06-06 | 2015-05-28 | B.B.A. Participaties B.V. | Cover of a pump |
| CN203703282U (en) * | 2014-01-11 | 2014-07-09 | 水伯格五金(深圳)有限公司 | Anti-burst device of water inlet valve |
| CN206468863U (en) * | 2016-12-30 | 2017-09-05 | 厦门立霖卫浴有限公司 | Water hammer-resistant pressure-reducing valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106594343B (en) | 2019-05-28 |
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Address after: 361021, 618, 621 and 622, 6th floor, 1616 Guankou Middle Road, Jimei District, Xiamen City, Fujian Province Applicant after: Xiamen Aspis Intelligent Manufacturing System Co., Ltd. Address before: 361100 Siming Industrial Park 306 B5, Tongan Industrial Zone, Xiamen City, Fujian Province Applicant before: Xiamen Lilin Sanitary Co., Ltd. |
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Address after: 361000 First and Five Floors of Main Building of No. 198-204 Yingyao Road, Jimei District, Xiamen City, Fujian Province Patentee after: Xiamen Aspis Intelligent Manufacturing System Co., Ltd. Address before: 361021, 618, 621 and 622, 6th floor, 1616 Guankou Middle Road, Jimei District, Xiamen City, Fujian Province Patentee before: Xiamen Aspis Intelligent Manufacturing System Co., Ltd. |
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