CN101280857A - Balance pressure water compensating valve - Google Patents
Balance pressure water compensating valve Download PDFInfo
- Publication number
- CN101280857A CN101280857A CNA2008100623967A CN200810062396A CN101280857A CN 101280857 A CN101280857 A CN 101280857A CN A2008100623967 A CNA2008100623967 A CN A2008100623967A CN 200810062396 A CN200810062396 A CN 200810062396A CN 101280857 A CN101280857 A CN 101280857A
- Authority
- CN
- China
- Prior art keywords
- valve
- water
- chamber
- pressure
- spring
- 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
Images
Landscapes
- Control Of Fluid Pressure (AREA)
Abstract
The present invention provides a constant-pressure water replenishing valve, pertaining to valve technique field. The present invention resolves problems that strict lower stream water return current can not be achieved, water replenishing pressure error is large in the existing water replenishing equipment. The constant-pressure water replenishing valve includes a valve body with a water inlet and a water outlet, the valve body is separated into a chamber 1 and a chamber 2 by a separation plate, a spring 1 and a sealing member are respectively arranged in the chamber 1 and the chamber 2, the chamber 1 communicates with the water inlet, the chamber 2 communicates with the water outlet, a through hole 1 for communicating the chamber 1 and the chamber 2 is arranged on the separation plate, a valve core base having a through hole 2 is arranged in the chamber 1, the spring 1 and the sealing member are provided respectively in the valve core base, the sealing member contacts with the through hole 2 to seal in effect of the spring 1. The constant-pressure water replenishing valve has advantages of automatically replenishing water and preventing water reverse flow for the water outlet, and integrating functions of replenishing water automatically, stopping water return, reducing pressure.
Description
Technical field
The invention belongs to valve technology field, relate to a kind of water replenishing device that is used for air-conditioning and heating system, particularly a kind of balance pressure water compensating valve that possesses pressure-reducing function and can prevent aqueous reflux again.
Background technique
As everyone knows, operation of air conditioning systems, boiler and heating system must adopt constant pressure supply water and device that the water quality of above system is handled with the assurance system do not vaporize, do not turn, superpressure and not corroding not, tradition generally is to use water tank to carry out constant pressure supply water.People used water-feeding valve to carry out moisturizing afterwards, and the function of water-feeding valve is that valve is opened automatically and given moisturizing, closes automatically after supplying when downstream water is pressed deficiency.But existing water-feeding valve the situation that downstream water refluxes occurs owing to can not accomplish strict control backflow when water transport pipeline anomaly, the reduction of upstream inlet hydraulic pressure often occur or cuts off the water; When increasing, water supplement port pressure also needs manually water-feeding valve to be closed in addition, can not accomplish the effect of decompression automatically, therefore generally all be to adopt water-feeding valve to add safety valve to make up and install, but the expense of so both having taken a lot of work material, water-feeding valve also will carry out the moisturizing pressure test after installing, cause the moisturizing pressure error big, cause unfavorable hidden danger for air-conditioning equipment and heating system.Therefore be necessary existing water-feeding valve structure is improved.
Summary of the invention
The objective of the invention is at existing existing the problems referred to above, and provide a kind of simple in structure, can keep making hydraulic pressure a stationary value, can carry out moisturizing automatically, prevent the balance pressure water compensating valve of aqueous reflux.
Purpose of the present invention can realize by following technical proposal: a kind of balance pressure water compensating valve, comprise valve body with water intake and water outlet, be provided with the dividing plate that its inside is divided into chamber one and chamber two in the described valve body, chamber one is connected with the water intake of valve body, chamber two with and water outlet be connected, has the through hole one that chamber one and chamber two are connected on the described dividing plate, it is characterized in that, in the described chamber one valve core case with through hole two is set, in valve core case, be provided with and be separately installed with spring one and Sealing, one end of described spring one acts on the above-mentioned Sealing, and described Sealing can contact and form sealing with through hole two under the effect of spring one.
This balance pressure water compensating valve is to be used in a kind of device that carries out automatic water supplement on the air-conditioning.Its central diaphragm is arranged in the valve body and with valve body and is connected as a single entity, the water intake of chamber one valve body is connected, chamber two with and water outlet be connected, and two connections of chamber one and chamber are got up by through hole one, water just can be passed to water outlet from water intake like this.Its medi-spring one has the masterpiece that upsprings to be used in Sealing when initial and makes the Sealing roof pressure at through hole two places.
During the work of this water-feeding valve, hydraulic pressure according to the water outlet place, when the pressure of water outlet during less than the pressure of water intake, water just enters in the chamber one from water intake, Sealing is pushed up from through hole two places under the effect of hydraulic pressure then, flows to water outlet behind via through holes one and the chamber two again, so just can make the high pressure water of water inlet flow into the water outlet place, carry out moisturizing automatically, and make the hydraulic pressure of water outlet keep constant state; When the hydraulic pressure of water intake reduces or when occurring cutting off the water, the pressure that is to say water outlet is during greater than the pressure of water intake, at this moment water just enters in the valve core case from the water outlet through hole one of flowing through again behind chamber two, effect lower seal at hydraulic pressure moves upward, make Sealing and through hole two contact and form the such water of sealing and just can not flow back into the water inlet from water outlet, anti-sealing flows backwards.
In above-mentioned balance pressure water compensating valve, be provided with spool between described spring one and the dividing plate, the other end of spring one acts on the spool, described spool passes through hole one and leaves the gap between the two, between spool and valve core case, be provided with spring two, one end of described spring two acts on the spool, and the other end acts on the valve core case, can slide in through hole one at spool above-mentioned under the effect of this spring two.
In above-mentioned balance pressure water compensating valve, have opening on the described valve body, be respectively arranged with diaphragm and the pressure regulation assembly of roof pressure on diaphragm that forms sealing with valve body at opening.Just can realize regulating the pressure of automatic water supplement by the pressure regulation assembly.
In above-mentioned balance pressure water compensating valve, also be provided with manual control unit on the described valve body, this manual control unit comprises drive link, handle and valve gap, described valve gap is installed on the valve body, the inner of drive link pass valve gap and can roof pressure on valve core case, the outer end of drive link passes valve gap and links to each other with handle.Be that balance pressure water compensating valve keeps in repair for convenience like this.
In above-mentioned balance pressure water compensating valve, described pressure regulation assembly comprises pressure regulating cover and the pressure adjusting spring that is arranged on the valve body, be provided with the pressure regulation bar that can move up and down in the described pressure regulating cover within it, an end of described pressure adjusting spring acts on the pressure regulation bar, and the other end acts on the diaphragm.Wherein compress or loosen the pressure that pressure adjusting spring just can realize regulating balance pressure water compensating valve by regulating the pressure regulation bar.
In above-mentioned balance pressure water compensating valve, described spool is provided with seal ring, and the sealing circle can contact and form sealing with through hole two.When balance pressure water compensating valve needs repairing, just can be by the manual control unit of operation, the inner roof pressure that makes drive link is on valve core case and drive spool and move downward, and at this moment the seal ring on the spool blocks through hole two, that is to say that water can't flow into water outlet from water intake again.
In above-mentioned balance pressure water compensating valve, the end of described valve core case is coniform and contacts and form sealing with dividing plate, also is provided with diaphragm seal between valve core case and dividing plate.Strengthened the sealability between valve core case and the dividing plate like this.
In above-mentioned balance pressure water compensating valve, also have exhaust port on the described valve body, on the described exhaust port bolt is installed, between exhaust port and bolt, be provided with exhaust gaskets.Can get rid of gas in the balance pressure water compensating valve by this pad.
In above-mentioned balance pressure water compensating valve, the outer end of described valve core case also is provided with filter screen.Can play the effect of impurity screening by filter screen, the current that prevent foreign material enter and cause valve body to stop up in the valve body.
In above-mentioned balance pressure water compensating valve, described Sealing is a steel ball.
Compared with prior art, the advantage of this balance pressure water compensating valve is and can carries out moisturizing to water outlet automatically, and when the hydraulic pressure of water intake reduces or when occurring cutting off the water, the water one-way flow in the strict restriction conduit prevents aqueous reflux.And can regulate hydraulic pressure, make the hydraulic pressure in the pipeline keep constant state.Therefore not only to integrate three big advantages be automatic water supplement, non-return, decompression to this balance pressure water compensating valve, and have simple in structure, high working efficiency, advantages such as long service life.
Description of drawings
Fig. 1 is the stereochemical structure decomposing schematic representation of this balance pressure water compensating valve.
Fig. 2 is the perspective view of this balance pressure water compensating valve.
Fig. 3 is the sectional structure schematic representation of this balance pressure water compensating valve.
Among the figure, valve body 1, water intake 1a, water outlet 1b, dividing plate 2, chamber one 2a, chamber two 2b, through hole one 2c, valve core case 3, through hole two 3a, steel ball 4, spring 1, diaphragm 6, pressure regulation assembly 7, pressure regulation bar 7a, pressure adjusting spring 7b, pressure regulating cover 7c, manual control unit 8, drive link 8a, handle 8b, valve gap 8c, spool 9, spring 2 10, filter screen 11, seal ring 12, exhaust port 13, exhaust gaskets 13a, diaphragm seal 14, pad 15.
Embodiment
Below be specific embodiments of the invention and in conjunction with the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.
This balance pressure water compensating valve is installed on the pipe-line system of air-conditioning equipment.As shown in figures 1 and 3, this balance pressure water compensating valve comprises the valve body 1 with water intake 1a and water outlet 1b, be provided with the dividing plate 2 that its inside is divided into chamber one 2a and chamber two 2b in the described valve body 1, chamber one 2a is connected with the water intake 1a of valve body 1, chamber two 2b with and water outlet 1b be connected, have through hole one 2c that chamber one 2a and chamber two 2b are connected on the described dividing plate 2, water just can flow into water outlet 1b from water intake 1a like this.
Valve core case 3 with through hole two 3a is set in chamber one 2a, and the end of valve core case 3 is coniform and contacts and form sealing with dividing plate 2, also is provided with diaphragm seal 14 between valve core case 3 and dividing plate 2.Strengthened the sealability between valve core case 3 and the dividing plate 2 like this.
In valve core case 3, be provided with and be separately installed with spring one and Sealing, one end of described spring one acts on the Sealing, the other end acts on the spool 9, Sealing can contact and form sealing with through hole two 3a under the effect of spring 1, its medi-spring 1 has the masterpiece that upsprings to be used in Sealing when initial and makes the Sealing roof pressure at through hole two 3a places, and Sealing is a steel ball 4 in the present embodiment.
On valve body 1, have opening, be respectively arranged with diaphragm 6 and the pressure regulation assembly 7 of roof pressure on diaphragm 6 that forms sealing with valve body 1 at opening, diaphragm 6 be have necessarily flexible, and and valve body 1 between surrounded chamber two 2b, make things convenient for water to reduce pressure.Diaphragm 6 is provided with pad 15, and pressure regulation assembly 7 comprises pressure regulating cover 7c and the pressure adjusting spring 7b that is arranged on the valve body 1, is connected by screw thread between pressure regulating cover 7c and the valve body 1.Be provided with the pressure regulation bar 7a that can move up and down in the described pressure regulating cover 7c within it,, therefore just can pressure regulation bar 7a moved up and down by rotation pressure regulation bar 7a because the inner of pressure regulating cover 7c has screw thread.The end of described pressure adjusting spring 7b acts on the pressure regulation bar 7a, and the other end acts on the diaphragm 6.Wherein compress or loosen the pressure that pressure adjusting spring 7b just can realize regulating balance pressure water compensating valve by regulating pressure regulation bar 7a.
Between spring 1 and dividing plate 2, be provided with spool 9, this spool 9 be loaded in the valve core case 3 and its head stretch out valve core case 3, described spool 9 passes through hole one 2c and leaves the gap between the two, between spool 9 and valve core case 3, be provided with spring 2 10, one end of described spring 2 10 acts on the spool 9, the other end acts on the valve core case 3, can slide in through hole one 2c at spool above-mentioned under the effect of this spring 2 10 9.
On valve body 1, also be provided with manual control unit 8, this manual control unit 8 comprises drive link 8a, handle 8b and valve gap 8c, described valve gap 8c is installed on the valve body 1 by being threaded, and an end of valve core case 3 is positioned at this valve gap 8c, the inner of drive link 8a pass valve gap 8c and can roof pressure on valve core case 3, the outer end of drive link 8a passes valve gap 8c and links to each other with handle 8b, and handle 8b and drive link 8a fix by a screw.
Outer end at valve core case 3 also is provided with filter screen 11, and filter screen 11 can prevent that impurity from entering in the valve body 1 and block valve, has prolonged the working life of water-feeding valve, as long as open valve gap 8c when needing to clean, cleaning filter screen 11 leaches impurity.
Spool 9 is provided with seal ring 12 in addition, and sealing circle 12 can contact and form sealing with through hole two 3a.When this balance pressure water compensating valve normally used, the inner of drive link 8a and valve core case 3 were discontiguous.When balance pressure water compensating valve needs repairing, just can pass through operating grip 8b, make drive link 8a move downward and make its inner roof pressure on valve core case 3 and drive spool 9 and move downward, at this moment spool 9 with regard to roof pressure on dividing plate 2, seal ring 12 on the spool 9 just blocks through hole two 3a, that is to say that water can't flow into water outlet 1b from water intake 1a again, conveniently keeps in repair.
As shown in Figure 2, on valve body 1, also have exhaust port 13, on the described exhaust port 13 bolt is installed, between exhaust port 13 and bolt, be provided with exhaust gaskets 13a.This exhaust gaskets 13a makes with special material, and the gas in the water-feeding valve can be discharged from by this exhaust gaskets 13a, and water can not be discharged from.
During the work of this balance pressure water compensating valve, pressure according to water outlet 1b, when the pressure of water outlet 1b during less than the pressure of water intake 1a, water just enters in chamber one 2a from water intake 1a, hydraulic pressure overcomes spring 1 and acts on pretension elastic force on the Sealing then, Sealing is pushed up from through hole two 3a places, via through holes one 2c flows to chamber two 2b places again, at chamber two 2b place hydraulic actions on diaphragm 6, realize flowing out from water outlet 1b again after the decompression, so just can make the high pressure water at water intake 1a place flow into water outlet 1b place, carry out moisturizing automatically.That is to say that as long as the pressure of water intake 1a during greater than the pressure of water outlet 1b, this balance pressure water compensating valve all can carry out moisturizing from trend water outlet 1b.Keep constant state up to the hydraulic pressure of water outlet 1b and the hydraulic pressure of water intake 1a.When the hydraulic pressure of water intake 1a reduces or when occurring cutting off the water, at this moment water just enters in the valve core case 3 from water outlet 1b through hole one 2c that flows through again behind chamber two 2b, under the effect of hydraulic pressure, steel ball 4 moves upward and blocks through hole two 3a, water just can't flow backwards back into mouth of a river 1a from water outlet 1b like this, and anti-sealing flows backwards.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technician of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used terms such as valve body 1, water intake 1a, water outlet 1b, dividing plate 2, chamber one 2a, chamber two 2b, through hole one 2c, valve core case 3, through hole two 3a, steel ball 4, spring 1, diaphragm 6, pressure regulation assembly 7, pressure regulation bar 7a, pressure adjusting spring 7b, pressure regulating cover 7c, manual control unit 8, drive link 8a, handle 8b, valve gap 8c, spool 9, spring 2 10, filter screen 11, seal ring 12, exhaust port 13, exhaust gaskets 13a, diaphragm seal 14, pad 15 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; They are construed to any additional restriction all is contrary with spirit of the present invention.
Claims (10)
1, a kind of balance pressure water compensating valve, the valve body (1) that comprises have water intake (1a) and water outlet (1b), be provided with the dividing plate (2) that its inside is divided into chamber one (2a) and chamber two (2b) in the described valve body (1), chamber one (2a) is connected with the water intake (1a) of valve body (1), chamber two (2b) with and water outlet (1b) be connected, has the through hole one (2c) that chamber one (2a) and chamber two (2b) are connected on the described dividing plate (2), it is characterized in that, valve core case (3) with through hole two (3a) is set in the described chamber one (2a), in valve core case (3), be provided with and be separately installed with spring one (5) and Sealing, one end of described spring one (5) acts on the above-mentioned Sealing, and described Sealing can contact and form sealing with through hole two (3a) under the effect of spring one (5).
2, balance pressure water compensating valve according to claim 1, it is characterized in that, be provided with spool (9) between described spring one (5) and the dividing plate (2), the other end of spring one (5) acts on the spool (9), described spool (9) passes through hole one (2c) and leaves the gap between the two, between spool (9) and valve core case (3), be provided with spring two (10), one end of described spring two (10) acts on the spool (9), the other end acts on the valve core case (3), can slide in through hole one (2c) at spool (9) above-mentioned under the effect of this spring two (10).
3, balance pressure water compensating valve according to claim 1 is characterized in that, described valve body has opening on (1), is respectively arranged with diaphragm (6) and the pressure regulation assembly (7) of roof pressure on diaphragm (6) that forms sealing with valve body (1) at opening.。
4, according to claim 1 or 2 or 3 described balance pressure water compensating valves, it is characterized in that, also be provided with manual control unit (8) on the described valve body (1), this manual control unit (8) comprises drive link (8a), handle (8b) and valve gap (8c), described valve gap (8c) is installed on the valve body (1), the inner of drive link (8a) pass valve gap (8c) and can roof pressure on valve core case (3), the outer end of drive link (8a) passes valve gap (8c) and links to each other with handle (8b).
5, balance pressure water compensating valve according to claim 3, it is characterized in that, described pressure regulation assembly (7) comprises pressure regulating cover (7c) and the pressure adjusting spring (7b) that is arranged on the valve body (1), be provided with the pressure regulation bar (7a) that can move up and down in the described pressure regulating cover (7c) within it, one end of described pressure adjusting spring (7b) acts on the pressure regulation bar (7a), and the other end acts on the diaphragm (6).
6, balance pressure water compensating valve according to claim 1 and 2 is characterized in that, described spool (9) is provided with seal ring (12), and sealing circle (12) can contact and form sealing with through hole two (3a).
7, balance pressure water compensating valve according to claim 1 and 2 is characterized in that, the end of described valve core case (3) is coniform and contacts and form sealing with dividing plate (2), also is provided with diaphragm seal (14) between valve core case (3) and dividing plate (2).
According to claim 1 or 2 or 3 described balance pressure water compensating valves, it is characterized in that 8, also have exhaust port (13) on the described valve body (1), described exhaust port is equipped with bolt on (13), is provided with exhaust gaskets (13a) between exhaust port (13) and bolt.
9, balance pressure water compensating valve according to claim 7 is characterized in that, the outer end of described valve core case (3) also is provided with filter screen (11).
10, balance pressure water compensating valve according to claim 1 is characterized in that, described Sealing is steel ball (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100623967A CN101280857B (en) | 2008-05-15 | 2008-05-15 | Balance pressure water compensating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100623967A CN101280857B (en) | 2008-05-15 | 2008-05-15 | Balance pressure water compensating valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101280857A true CN101280857A (en) | 2008-10-08 |
| CN101280857B CN101280857B (en) | 2012-05-16 |
Family
ID=40013461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100623967A Expired - Fee Related CN101280857B (en) | 2008-05-15 | 2008-05-15 | Balance pressure water compensating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101280857B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047461A (en) * | 2012-12-22 | 2013-04-17 | 北京菁华昱创节能设备有限公司 | Differential pressure balance valve |
| CN103115170A (en) * | 2013-02-02 | 2013-05-22 | 陈海峰 | Adjustable filtering pressure maintaining valve |
| CN104633264A (en) * | 2015-02-13 | 2015-05-20 | 王少华 | Gas pressure reducing valve |
| CN111164341A (en) * | 2017-09-25 | 2020-05-15 | 株式会社富士金 | Valve device, adjustment information generation method, flow rate adjustment method, fluid control device, flow rate control method, semiconductor manufacturing device, and semiconductor manufacturing method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2612728A (en) * | 1946-10-02 | 1952-10-07 | Union Carbide & Carbon Corp | Fluid pressure regulator |
| US3699998A (en) * | 1970-12-11 | 1972-10-24 | Frank Baranowski Jr | Calibrated pressure regulator |
| CN2033463U (en) * | 1988-07-05 | 1989-03-01 | 王致和 | Sort of decompress valve |
| KR100562770B1 (en) * | 2004-03-05 | 2006-03-20 | 주식회사 승광 | multi-function pressure reducing valve for water cleaner |
| ES2239550B1 (en) * | 2004-12-14 | 2006-06-01 | Goizper, S.Coop | LIQUID PRESSURE REGULATOR. |
| CN201221632Y (en) * | 2008-05-15 | 2009-04-15 | 王扬平 | Balance pressure water-compensating valve |
-
2008
- 2008-05-15 CN CN2008100623967A patent/CN101280857B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047461A (en) * | 2012-12-22 | 2013-04-17 | 北京菁华昱创节能设备有限公司 | Differential pressure balance valve |
| CN103115170A (en) * | 2013-02-02 | 2013-05-22 | 陈海峰 | Adjustable filtering pressure maintaining valve |
| CN103115170B (en) * | 2013-02-02 | 2015-04-22 | 陈海峰 | Adjustable filtering pressure maintaining valve |
| CN104633264A (en) * | 2015-02-13 | 2015-05-20 | 王少华 | Gas pressure reducing valve |
| CN111164341A (en) * | 2017-09-25 | 2020-05-15 | 株式会社富士金 | Valve device, adjustment information generation method, flow rate adjustment method, fluid control device, flow rate control method, semiconductor manufacturing device, and semiconductor manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101280857B (en) | 2012-05-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7458386B2 (en) | Manual gas valve with natural/LP gas conversion capability | |
| RU2541687C2 (en) | Pressure reducer | |
| KR20180040010A (en) | Safe valve for high pressure regulator | |
| MY154544A (en) | Valve | |
| CN101280857B (en) | Balance pressure water compensating valve | |
| WO2007046104A3 (en) | Drip emitter with an independent non-drain valve | |
| DE602006012004D1 (en) | Double gas pressure regulator for household appliances | |
| US9816635B2 (en) | Valve having an exchangeable cartridge | |
| KR101401307B1 (en) | Compound pressure reducing valve | |
| US7434595B2 (en) | Safety valve assembly having set and reset mechanisms | |
| CN201190823Y (en) | Pressure reducing valve with improved structure | |
| WO2008039778A3 (en) | Self cleaning flow shutoff valve | |
| CN202012642U (en) | Novel backflow preventer | |
| CN201221632Y (en) | Balance pressure water-compensating valve | |
| TW200506250A (en) | Arrangement for a single-grip mixing valve battery being operated by turning only | |
| EG24907A (en) | Choke valve device | |
| CN109185516B (en) | Lever type gas pressure regulator | |
| CN203549096U (en) | Buffering actuator, fluid regulator and system for customizing buffer | |
| CN201628005U (en) | Pilot operated antifouling electromagnetic valve | |
| CN203348645U (en) | Venturi tube type low-resistance backflow prevention device | |
| JP2006281164A (en) | Water purifying device | |
| MX2010000239A (en) | Fluid flow valve. | |
| KR20110003294U (en) | The Pressure Reducing Valve having ball type angle valve | |
| GB2443258A (en) | Valve assembly | |
| CN2519893Y (en) | Pressure releasing structure for one-way valve of electric water heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120516 Termination date: 20170515 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |