CN108561600A - Alarm valve assembly - Google Patents
Alarm valve assembly Download PDFInfo
- Publication number
- CN108561600A CN108561600A CN201810281156.XA CN201810281156A CN108561600A CN 108561600 A CN108561600 A CN 108561600A CN 201810281156 A CN201810281156 A CN 201810281156A CN 108561600 A CN108561600 A CN 108561600A
- Authority
- CN
- China
- Prior art keywords
- alarm
- flow channel
- connecting seat
- runner
- water
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 83
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 4
- 230000002411 adverse Effects 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005406 washing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 108091092568 Alarmone Proteins 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/58—Pipe-line systems
- A62C35/60—Pipe-line systems wet, i.e. containing extinguishing material even when not in use
- A62C35/605—Pipe-line systems wet, i.e. containing extinguishing material even when not in use operating and sounding alarm automatically
-
- 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
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/58—Pipe-line systems
- A62C35/68—Details, e.g. of pipes or valve systems
-
- 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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/20—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
-
- 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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The present invention provides a kind of alarm valve assembly, including a valve body, a connecting seat, one first switch, one second switch, one alarm unit, one filter device, one second non-return device and a distributive pipe, a water inlet flow channel is arranged in the valve body one end, the outlet passage that opposite end setting one is connected to the water inlet flow channel, one first duct and one second duct is arranged in side, be pivoted one first non-return device between the water inlet flow channel and the outlet passage, the connecting seat is set with valve body side locking group, the connecting seat is equipped with a first flow, one second flow channel and an alarm runner, a water outlet is arranged in the alarm runner one end, the first switch is installed in the first interconnecting part of the connecting seat, the second switch is installed in the second interconnecting part of the connecting seat, the alarm unit is arranged in the water outlet of the alarm runner of the connecting seat；Thereby, achieve the effect that alarm valve assembly structure is simple, small and easily assembled, quick and at low cost.
Description
Technical field
The present invention relates to a kind of fire-fighting equipment, espespecially a kind of alarm valve assembly of connection also fire sprinkler systems.
Background technology
The pipeline piping of building also fire sprinkler systems at present, in building, fire cistern, Fire Pump warp is arranged in bottom
By the main pipe of the also fire sprinkler systems, it is supplied to each watering of each floor automatic water system respectively with certain pressure
Head.Therefore, the alarm valve of fire-fighting must be installed between each floor automatic water system and main pipe, which drenches with rain alarm
Valve, wet type alarm valve etc., the automatic water system pipeline of each floor of the alarm valve that drenches with rain spray hydraulic pressure will meet usually, with
The needs for dealing with also fire sprinkler at any time, when fire occurs, which forms an access, certainly by each floor immediately
Each washing head of dynamic sprinkler system carries out fire extinguishing water；The automatic water system pipe of the wet type alarm valve each floor when usual
Without fire water in road, when fire occurs, which forms an access, the Self-watering of conveying fire water to each floor
Each washing head of system pipeline, supply fire water to each floor automatic water system carries out fire extinguishing water.
The alarm valve of existing fire-fighting has the following problems：
1, pipeline is complicated, is mostly engaged by more than one piece, there is that assembling trouble, assembling speed are slow and assembly cost is high asks
Topic.
2, volume is big.
Easily there is the case where leak when 3, using.
Invention content
The present invention is based on above-mentioned alarm valve there are the problem of a kind of new alarm valve assembly is provided.
The invention is realized in this way：A kind of alarm valve assembly, including a valve body, a water inlet flow channel, phase is arranged in one end
One first duct and one being connected to the water inlet flow channel is arranged in the outlet passage that opposite end setting one is connected to the water inlet flow channel, side
The third duct being connected to the outlet passage is separately arranged in second duct, homonymy, which sets fire water water source to connect, should
Outlet passage sets also fire sprinkler systems to connect, and be pivoted one first non-return device between the water inlet flow channel and the outlet passage,
First non-return device stops fire water from outlet passage toward water inlet flow channel adverse current, will be closed between first duct；One connects
Joint chair is integrally formed, which sets with valve body side locking group, the connecting seat equipped with a first flow, a second flow channel,
One third flow channel and an alarm runner, the first flow one end are connected with the first duct of the valve body, the other end and the alarm
One first interconnecting part is arranged between runner to be connected to, which be connected with the second duct of the valve body, the other end and this
One second interconnecting part is arranged between alarm runner to be connected to, which is connected with the third duct of the valve body, the other end
It is connected to the second flow channel, and the third flow channel intersects connection with the first flow, which is equipped with an opening,
Opening locking sets capping closing, which is arranged a water outlet；One first switch, is installed in the connecting seat
First interconnecting part, to control being turned on and off between the connecting seat first flow and alarm runner；One second switch, is installed in
Second interconnecting part of the connecting seat, to control being turned on and off between the connecting seat second flow channel and alarm runner；One alarm
Unit is arranged in the water outlet of the alarm runner of the connecting seat；One second non-return device, is installed in by the opening of the connecting seat
In the third flow channel of the connecting seat, second non-return device can in fire water from second flow channel through third flow channel toward the of valve body
Three ducts automatically turn on when flowing, and can be used to stop fire water from the third duct of valve body toward second flow channel countercurrently；And one
Distributive pipe is arranged in the first flow of the connecting seat, is intersected with the third flow channel of the connecting seat so that the first of the connecting seat
Runner is separated into independent runner out of the ordinary with third flow channel.
Preferably, the present invention has additionally comprised a filter device, and a discrimination is arranged in the nearly water outlet of alarm runner of the connecting seat
Pipe, the filter device are installed in the manifold of the connecting seat alarm runner, to filter disappearing towards the water outlet of alarm runner
Waterproof.
Preferably, which includes a deferred mount and an alarm bell, which is arranged in the connecting seat
The water outlet of alarm runner, the alarm bell are connect with the deferred mount.
Preferably, the casting integrated molding of the connecting seat.
The invention has the advantages that：Alarm valve assembly of the present invention, by by first flow, second flow channel, third flow channel
And alarm runner is set to connecting seat, and connecting seat is additionally provided with the first interconnecting part installed for first switch, for second switch
Second interconnecting part of installing and the mode that the water outlet set is connect for alarm unit realize that alarm valve is simple in structure, small without accounting for
With space, and it is easily assembled, assembling speed is fast, assembly cost is low, and when use does not tend to have leak the case where.
Description of the drawings
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the front view of the present invention.
Fig. 2 is the stereogram exploded view of the present invention.
Fig. 3 is the sectional view of the present invention.
Fig. 4 is the automatic water supplement schematic diagram of the present invention.
Fig. 5 is the water outlet status diagram of the present invention.
Fig. 6 is the test alarm schematic diagram of the present invention.
Symbol description is as follows：
10~valve body；11~water inlet flow channel；12~outlet passage；13~third duct；14~the first ducts；15~the
Two ducts；16~the first non-return devices；20~connecting seat；21~first flow；22~second flow channel；23~third flow channel；231
~opening；232~capping；24~alarm runner；241~water outlet；242~manifold；25~the first interconnecting parts；26~the second connect
Logical portion；30~first switch；40~second switch；50~alarm unit；51~deferred mount；52~alarm bell；60~filtering dress
It sets；70~the second non-return devices；80~distributive pipe.
Specific implementation mode
Shown in please referring to Fig.1 to Fig.3, alarm valve assembly of the present invention a, including valve body 10, a connecting seat 20, one first
Switch 30, a second switch 40, an alarm unit 50, a filter device 60, one second non-return device 70 and a distributive pipe 80.
A water inlet flow channel 11 is arranged in 10 one end of valve body, and opposite end setting one goes out flow with what the water inlet flow channel 11 was connected to
One first duct 14 and one second duct 15 being connected to the water inlet flow channel 11 is arranged in road 12, side, and separately setting goes out homonymy with this
The third duct 13 that water flow passage 12 is connected to, the water inlet flow channel 11 set fire water water source (not shown), the outlet passage to connect
12 set also fire sprinkler systems (not shown) to connect, and are pivoted between the water inlet flow channel 11 and the outlet passage 12 one first inverse
Locking apparatus 16, first non-return device 16 can automatically turn on when fire water is flowed from water inlet flow channel 11 toward outlet passage 12, and
It can be used to stop fire water from outlet passage 12 toward the adverse current of water inlet flow channel 11, while under normal conditions will be sealed between first duct 14
It closes.
The 20 casting integrated molding of connecting seat, the connecting seat 20 are set with 10 side locking group of valve body, which sets
There are a first flow 21, a second flow channel 22, a third flow channel 23 and an alarm runner 24,21 one end of first flow and the valve
First duct 14 of ontology 10 is connected, and one first interconnecting part 25 is arranged between the other end and the alarm runner 24 and is connected to, the second
22 one end of road is connected with the second duct 15 of the valve body 10, and one second interconnecting part 26 is arranged between the other end and the alarm runner 24
Connection, 23 one end of third flow channel are connected with the third duct 13 of the valve body 10, and the other end is connected to the second flow channel 22, and
And the third flow channel 23 intersects connection with the first flow 22, which is equipped with an opening 231, the opening 231
Locking sets a capping 232 and closes, 24 one end of alarm runner setting, one water outlet 241, at the 24 nearly water outlet 241 of alarm runner
One manifold 242 is set.
The first switch 30 is installed in the first interconnecting part 25 of the connecting seat 20, to control 20 first flow of connecting seat
Being turned on and off between 21 and alarm runner 24.
The second switch 40 is installed in the second interconnecting part 26 of the connecting seat 20, to control 20 second flow channel of connecting seat
Being turned on and off between 22 and alarm runner 24.
The alarm unit 50 includes a deferred mount 51 and an alarm bell 52, which is arranged in the connecting seat 20
Alarm runner 24 water outlet 241, which connect with the deferred mount 51.
The filter device 60 is installed in the manifold 242 of the 20 alarm runner 24 of connecting seat, leads to alarm stream to filter
The fire water of the water outlet 241 in road 24.
Second non-return device 70 is installed in the third flow channel 23 of the connecting seat 20 by the opening 231 of the connecting seat 20
Interior, which can be flowed through third flow channel 23 toward the third duct 13 of valve body 10 in fire water from second flow channel 23
It is automatically turned on when dynamic, and can be used to stop fire water from the third duct 13 of valve body 10 toward second flow channel 23 countercurrently.
The distributive pipe 80 is arranged in the first flow 21 of the connecting seat 20, is handed over the third flow channel 23 of the connecting seat 20
Fork so that the first flow 21 of the connecting seat 20 is separated into independent runner out of the ordinary with third flow channel 23.
The present invention in use, as shown in figure 4, the water inlet flow channel 11 of valve body 10, which connects, sets fire water water source (not shown),
The outlet passage 12 of valve body 10, which connects, sets also fire sprinkler systems, is filled in the water inlet flow channel 11 and outlet passage 12 of valve body 10
The completely fire water with certain hydraulic pressure, first switch 30 is set as normally open, and second switch 40 is set as normal status, when disappearing
When anti-automatic sprinkler system has leak situation, water inlet flow channel 11 that fire water can be by valve body 10,15 company of flowing to of the second duct
The second flow channel 22 of joint chair 20, then by the second flow channel 22 of connecting seat 20 valve is flowed back to through third flow channel 23 and the second non-return device 70
The outlet passage 12 of ontology 10, the washing head for being delivered to automatic water system are automatically replenished so that the valve body 10 into
The hydraulic pressure of water flow passage 11 is equal with the holding of the hydraulic pressure of outlet passage 12.
When there is fire, as shown in figure 5, the washing head of automatic water system is because high temperature automatically turns on, then fire water is just
Water inlet flow channel 11, the first non-return device 16 and outlet passage 12 by dodging ontology 10 are delivered to the washing head of automatic water system
Fire extinguishing water action is carried out, while the first non-return device 16 releases the closing between water inlet flow channel 11 and the first duct 14, fire water
Alarm runner 24 is flow to by the first duct 14, first flow 21, distributive pipe 80 and the first interconnecting part 25, then is passed through by alarm runner 24
After filter device 60 filters, alarm unit 50 is flow to by water outlet 241, starts alarm bell 52 and sounds the alarm sound, reach work of warning
With.
Furthermore second switch 40 can be opened when as shown in fig. 6, usual, fire water is made to pass through the feed water flow of valve body 10
Road 11, the second duct 15 flow to the second flow channel 22 of connecting seat 20, then by connecting seat 20 second flow channel 22 through the second interconnecting part
26 flow to alarm runner 24, and by alarm runner 24 after the filtering of filter device 60, alarm unit 50 is flow to by water outlet 241,
Start alarm bell 52 to sound the alarm sound, reaches the effect of test alarm unit 50.
Although specific embodiments of the present invention have been described above, those familiar with the art should manage
Solution, we are merely exemplary described specific embodiment, rather than for the restriction to the scope of the present invention, it is familiar with this
The technical staff in field modification and variation equivalent made by the spirit according to the present invention, should all cover the present invention's
In scope of the claimed protection.
Claims (4)
1. a kind of alarm valve assembly, it is characterised in that：Including
A water inlet flow channel is arranged in one valve body, one end, and the outlet passage that opposite end setting one is connected to the water inlet flow channel, side is set
One first duct and one second duct being connected to the water inlet flow channel are set, the third hole being connected to the outlet passage is separately arranged in homonymy
Road, the water inlet flow channel set fire water water source to connect, which sets also fire sprinkler systems to connect, the water inlet flow channel
Be pivoted one first non-return device between the outlet passage, which stops fire water from outlet passage toward water inlet flow channel
Countercurrently, will be closed between first duct；
A connecting seat is integrally formed, which sets with valve body side locking group, which is equipped with a first flow, one
Second flow channel, a third flow channel and an alarm runner, the first flow one end are connected with the first duct of the valve body, the other end
One first interconnecting part is arranged between the alarm runner to be connected to, which is connected with the second duct of the valve body, separately
One second interconnecting part is arranged between one end and the alarm runner to be connected to, the third flow channel one end and the third duct of the valve body are held in the mouth
It connects, the other end is connected to the second flow channel, and the third flow channel intersects connection with the first flow, which sets
There is an opening, opening locking sets capping closing, which is arranged a water outlet；
One first switch is installed in the first interconnecting part of the connecting seat, to control the connecting seat first flow and alarm runner
Between be turned on and off；
One second switch is installed in the second interconnecting part of the connecting seat, to control the connecting seat second flow channel and alarm runner
Between be turned on and off；
One alarm unit is arranged in the water outlet of the alarm runner of the connecting seat；
One second non-return device is installed in by the opening of the connecting seat in the third flow channel of the connecting seat, second check dress
Setting can automatically turn on when fire water is flowed through third flow channel toward the third duct of valve body from second flow channel, to stop fire-fighting
Water from the third duct of valve body toward second flow channel adverse current；And
One distributive pipe, is arranged in the first flow of the connecting seat, intersects with the third flow channel of the connecting seat so that the connecting seat
First flow and third flow channel be separated into independent runner out of the ordinary.
2. alarm valve assembly according to claim 1, it is characterised in that：A filter device has been additionally comprised, the connecting seat
A manifold is arranged in the nearly water outlet of alarm runner, which is installed in the manifold of the connecting seat alarm runner, to mistake
Fire water of the filter towards the water outlet of alarm runner.
3. alarm valve assembly according to claim 1, it is characterised in that：The alarm unit includes a deferred mount and one
Alarm bell, the deferred mount are arranged in the water outlet of the alarm runner of the connecting seat, which connect with the deferred mount.
4. alarm valve assembly according to claim 1, it is characterised in that：The casting integrated molding of the connecting seat.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810281156.XA CN108561600B (en) | 2018-04-02 | 2018-04-02 | Alarm valve assembly |
| PCT/CN2019/078654 WO2019192315A1 (en) | 2018-04-02 | 2019-03-19 | Alarm valve assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810281156.XA CN108561600B (en) | 2018-04-02 | 2018-04-02 | Alarm valve assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108561600A true CN108561600A (en) | 2018-09-21 |
| CN108561600B CN108561600B (en) | 2024-02-20 |
Family
ID=63533686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810281156.XA Active CN108561600B (en) | 2018-04-02 | 2018-04-02 | Alarm valve assembly |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108561600B (en) |
| WO (1) | WO2019192315A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019192315A1 (en) * | 2018-04-02 | 2019-10-10 | 福州海量管道器材有限公司 | Alarm valve assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202136182U (en) * | 2011-06-21 | 2012-02-08 | 艾克森工业有限公司 | Changeover valve structure of water dispenser |
| CN205639732U (en) * | 2016-05-18 | 2016-10-12 | 四川海鹰阀门有限公司 | Slot wet -type alarm valve |
| KR101787517B1 (en) * | 2016-09-07 | 2017-11-15 | 주식회사 우당기술산업 | Pre action valve |
| US20180064977A1 (en) * | 2016-09-07 | 2018-03-08 | Bocciolone Antincendio S.P.A. | Dry alarm valve assembly for controlling a sprinkler firefighting system |
| CN208442346U (en) * | 2018-04-02 | 2019-01-29 | 福州海量管道器材有限公司 | Alarm valve assembly |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2277794Y (en) * | 1996-03-01 | 1998-04-08 | 程梦麟 | Alarm back fire check valve for fire control |
| CN2294495Y (en) * | 1997-06-19 | 1998-10-14 | 陈国卫 | Anti-theft alarm water pumping device |
| TWM431715U (en) * | 2012-02-23 | 2012-06-21 | Protector Sprinkler Ind Co Ltd | Modular water valve |
| KR101853249B1 (en) * | 2017-06-13 | 2018-04-30 | 주식회사 티지화이어 | Alarm valve for firefighting comprising secondery overpressure preventing structure |
| CN108561600B (en) * | 2018-04-02 | 2024-02-20 | 福州海量管道器材有限公司 | Alarm valve assembly |
-
2018
- 2018-04-02 CN CN201810281156.XA patent/CN108561600B/en active Active
-
2019
- 2019-03-19 WO PCT/CN2019/078654 patent/WO2019192315A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202136182U (en) * | 2011-06-21 | 2012-02-08 | 艾克森工业有限公司 | Changeover valve structure of water dispenser |
| CN205639732U (en) * | 2016-05-18 | 2016-10-12 | 四川海鹰阀门有限公司 | Slot wet -type alarm valve |
| KR101787517B1 (en) * | 2016-09-07 | 2017-11-15 | 주식회사 우당기술산업 | Pre action valve |
| US20180064977A1 (en) * | 2016-09-07 | 2018-03-08 | Bocciolone Antincendio S.P.A. | Dry alarm valve assembly for controlling a sprinkler firefighting system |
| CN208442346U (en) * | 2018-04-02 | 2019-01-29 | 福州海量管道器材有限公司 | Alarm valve assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019192315A1 (en) * | 2018-04-02 | 2019-10-10 | 福州海量管道器材有限公司 | Alarm valve assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108561600B (en) | 2024-02-20 |
| WO2019192315A1 (en) | 2019-10-10 |
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