CN106015714B - Constant pressure type container value - Google Patents
Constant pressure type container value Download PDFInfo
- Publication number
- CN106015714B CN106015714B CN201610411847.8A CN201610411847A CN106015714B CN 106015714 B CN106015714 B CN 106015714B CN 201610411847 A CN201610411847 A CN 201610411847A CN 106015714 B CN106015714 B CN 106015714B
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- China
- Prior art keywords
- exhaust passage
- valve
- valve body
- valve rod
- regulating device
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Classifications
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- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/363—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor the fluid acting on a piston
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a kind of constant pressure type container values, including valve body, valve rod and position-limit mechanism, valve stem seal is connected in valve body, valve body is equipped with air inlet and air outlet, valve body is equipped with pressure regulating device and the exhaust passage with pressure regulating device cooperation, and exhaust passage can be connected to air inlet, valve inner and the external world；Exhaust passage can cooperate with valve rod, position-limit mechanism, so that pressure regulating device has the first working position and the second working position, when in the first working position, partial high pressure gas in exhaust passage can push pressure regulating device to move up, exhaust passage is connected with the external world, and the partial high pressure gas push valve rod in exhaust passage is moved down to open container value；When in the second working position, exhaust passage and the external world are isolated by pressure regulating device, and the high pressure gas in the exhaust passage pushes valve rod to move down to open container value.The present invention has both the function of container value and pressure reducing valve, and sealing effect is good, can be adjusted according to the needs the pressure of starting gas to setting value, opens flexibility and reliability.
Description
Technical field
The invention belongs to extinction using gas equipment fields, more particularly, to a kind of constant pressure type container value.
Background technique
In outer stored-pressure type automatic fire extinguishing system, because extinguishing chemical bottle group receiving pressure is limited, push nitrogen that need to pass through pressure reducing valve
Into extinguishing chemical bottle group, constant-voltage power is provided for fire extinguishing system；When extinguishing chemical bottle group does not work, pressure reducing valve is in close state
Under, answer bubble-free to leak.Domestic existing similar product container value and pressure reducing valve exist simultaneously, wasting space, and pressure value can not
It adjusts, does not adapt to the extinguishing chemical bottle group of different refitting amounts, and not can guarantee the safety of extinguishing chemical bottle group.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provide one kind can according to initial set value adjust starting pressure,
Have both the constant pressure type container value of decompression.
The technical solution adopted by the present invention to solve the technical problems is: a kind of constant pressure type container value, including valve body, can be in
The valve rod and position-limit mechanism moved in valve body, the valve stem seal are connected in valve body, and the valve body is equipped with for driving gas
By air inlet and air outlet, the valve body be equipped with pressure regulating device and with the pressure regulating device cooperation exhaust passage, the row
Gas channel can be connected to air inlet, valve inner and the external world；The exhaust passage can cooperate with valve rod, position-limit mechanism, so that pressure regulation
Mechanism has the first working position and the second working position, the partial high pressure gas when being in the first working position, in the exhaust passage
Body can push pressure regulating device to move up, and the exhaust passage is connected with the external world, and the partial high pressure gas in the exhaust passage pushes away
Ovable valve stem moves down connection air inlet and air outlet, to open container value；When being in the second working position, pressure regulating device is logical by exhaust
Road is isolated with the external world, and the high pressure gas in the exhaust passage pushes valve rod to move down to open container value.When original state, if
Press mechanism set the tone to the pressure of valve body, i.e. the pressure regulating device pressure value of blocking exhaust passage, is entered in container value by air inlet
Starting gas enter in valve body by exhaust passage, when starting gas pressure is greater than the setting value of pressure regulating device original state
When, a part of high pressure gas can push up upwards pressure regulating device, so that exhaust passage connection is extraneous, a part of high pressure gas is discharged,
Another part high pressure gas can apply a downward pressure to valve stem tip, push valve rod to move down, to be connected to air inlet
Container value is opened in mouth and gas outlet.When release gas to pressure is equal to or less than initial set value, pressure regulating device homing.
When completing to start, position-limit mechanism applies a upward restoring force to valve rod, and air inlet and air outlet are not connected to.
Further, the pressure regulating device include mounting base, can in the elastic component moved up and down in mounting base, for adjusting
The regulating part of elastic component decrement and the blocking piece to offset with elastic component one end, the blocking piece and exhaust passage cooperate.Pass through adjusting
Part moves up and down the decrement that can change to elastic component, thus change pressure regulating device to the pressure value for blocking exhaust passage,
It is adapted to different container bottles, adaptability is high.
Further, the position-limit mechanism includes the return unit being sheathed on valve rod, is set to the intracorporal positioning region of valve and company
Fitting, the connector and valve interior wall sealing cooperate, and described return unit one end offsets with positioning region, and the other end is butted on connection
Part.Elastic component is set between valve rod and connector, and elastic component is avoided to shift, and structure is more stable.
Further, the position-limit mechanism further includes revolving part, and the revolving part and valve rod cooperate, and it is multiple can to move up and down adjusting
The decrement of position part.By the decrement for moving up and down change return unit of revolving part, it can conveniently adjust valve rod and move up and down
Distance, so as to which according to different container bottles, cooperative voltage regulation device sets different cracking pressures, and structure is more flexible.
Open Here pressure is the minimum operating pressures that for pushing valve rod to move down, since discharge pressure range is smaller in flask for medicinal preparations, in order to
It avoids the biggish starting bottle of pressure that a small amount of leakage occurs, and leads to that valve rod is pushed to move down to cause to open by mistake and open, pass through revolving part
Setting, so that valve rod can not be pushed to move down opening container value there are when less leakage rate, so that pressure reducing valve has had both appearance
The function of device valve.
Further, the position-limit mechanism further includes the opening tool with valve interior wall sealing cooperation, the opening tool and valve rod
It offsets to push valve rod to move down.The sealing cooperation of opening tool and valve body ensure that good air-tightness in valve body, so that valve
Body sealed reliable.
Further, the groove being connected with exhaust passage is equipped at the top of the opening tool.When opening tool top surface and valve body
When inner top surface offsets, blocking exhaust passage is avoided, guarantees that starting gas can be smoothly through groove and valve rod is pushed to move down.
Further, closeouts are sealedly connected on the valve body, being formed in the closeouts can be connected with exhaust passage
Cavity, be movably equipped with anti-blocking piece in the cavity.Since the exhaust passage section along valve body cross direction profiles is smaller, it is easy to quilt
Foreign matters from being blocked, anti-blocking piece can shake when gas passes through, not only effectively sundries be avoided to block, but also can be in activity
When by the sundries being stuck in exhaust passage be discharged, guarantee the patency of exhaust passage.
Further, adjusting plug is equipped in the cavity, the anti-blocking piece is movably connected in the adjusting plug.It avoids anti-blocking
Part is detached from closeouts.
Further, the valve rod is connect by V-shaped seal ring with valve seal.Sealing effect is good, guarantees that valve is intracorporal
Air-tightness.
Further, the valve body is equipped with valve deck, which is equipped with connection exhaust passage and extraneous through-hole.Valve deck
Integrally-built assembly is convenient in setting.
The beneficial effects of the present invention are: having both the function of pressure reducing valve and container value, sealing effect is good, can according to need tune
The pressure of section starting gas opens flexibility and reliability, structure is simple, and it is convenient to assemble to setting value.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of closed state of the present invention.
Fig. 2 is the structural schematic diagram when present invention is in the first working position.
Fig. 3 is the structural schematic diagram when present invention is in the second working position.
Fig. 4 is the schematic diagram of the section structure of valve deck.
Fig. 5 is the overlooking structure diagram of valve deck.
Specific embodiment
In order to make those skilled in the art better understand the present invention program, below in conjunction in the embodiment of the present invention
Attached drawing carries out clear, complete description to the technical solution in inventive embodiments, it is clear that described embodiment is only this
A part of the embodiment of invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, should fall within the scope of the present invention.
Referring to Fig.1 shown in -5, a kind of constant pressure type container value, including valve body 1, the valve rod 2 that can be moved in valve body 1 and limit
Mechanism.Valve body 1 includes epicoele a, lumen b and cavity of resorption c, and 2 middle part of valve rod and the junction of epicoele a and lumen b pass through sealing ring 175
It is tightly connected, 2 lower part of valve rod is tightly connected with the junction of cavity of resorption c and lumen b by V-shaped seal ring 21, and V-shaped seal ring 21 is not
Only sealing effect is good, and mobile reset effect is good, and valve body 1 is equipped with the air inlet 15 being connected with lumen b, on air inlet 15
It is sealedly connected with outlet bung flange 6 by sealing ring 172, gas outlet 16 is connected with cavity of resorption c, and cavity of resorption c can pass through 179 He of sealing ring
Straight thread is connected with flask for medicinal preparations.Exhaust passage 3 is formed on valve body 1, which is connected with air inlet 15, is vented
The other end in channel 3 can be connected with 1 external world of valve body, and in this present embodiment, exhaust passage 3 is arranged in opposite with air inlet 15
Side comprising stomata d in horizontal direction and the parallel stomata e being circumferentially arranged, for the ease of the starting gas of air inlet 15
It passes through valve rod 2 and flows to exhaust passage 3, one section of diameter that valve rod 2 is located at lumen b reduces, so that gas can be along valve rod 2
Outer wall flow to exhaust passage 3.Certain exhaust passage 3 also can be set in 15 side of air inlet.Exhaust is logical in order to prevent
Road 3 is mixed into the intracorporal impurity blocking of gas, in the junction of stomata d and stomata e, is inwardly inserted into closeouts 12 by the external world, in order to
Guarantee that the air-tightness of valve body 1, the closeouts 12 are tightly connected with valve body 1 by sealing ring 171.Closeouts 12 are towards in valve body 1
The side in portion forms cavity 121, which is respectively connected with logical with stomata d and stomata e, is movably equipped with adjusting plug in cavity 121
13, there is gap, i.e. adjusting plug 13 can be in cavity 121 freely between the outer wall of the adjusting plug 13 and the inner wall of cavity 121
Activity.The second cavity being connected to stomata d is formed in adjusting plug 13, is connected with anti-blocking piece 131 in second cavity, specifically
The anti-blocking piece 131 be anti-blocking needle in " 7 " font, one end of anti-blocking needle bending be fastened on adjusting plug 13 and closeouts 12 it
Between, avoid anti-blocking needle from being detached from the second cavity, the other end of anti-blocking needle extends in the lumen b of valve body 1, thus when in stomata d into
When entering impurity, movable up and down stomata d can be discharged in impurity by anti-blocking needle, and impurity also can be effectively prevented and enter in stomata d.
Position-limit mechanism include the return unit 51 for being set in the periphery of valve rod 2, the positioning region 11 in valve body 1 and with valve body 1
The connector 52 of epicoele a sealing cooperation, in this present embodiment, return unit 51 are spring, and positioning region 11 is to be fixedly connected on valve body 1
Interior spring base, bottom end and the positioning region 11 of return unit 51 offset, and top and the connector 52 of return unit 51 offset, in order to improve
The stability of structure, the outer wall of valve rod 2 extend outward to form convex edge, extend to form on connector 52 convex with convex edge cooperation
Edge, when connector 52 moves down, the flange bottom surface of connector 52 resists convex edge top surface, pushes valve rod 2 to synchronize and moves down compression return unit
51.In order to guarantee air-tightness, sealing ring 173, the lateral wall and valve of connector 52 are arranged between 2 outer wall of flange side and valve rod
Sealing ring 174 is arranged between the inner wall of body 1.In this present embodiment, in order to further ensure the air-tightness in valve body 1, valve body 1
Cylinder 55 is also inside sealedly connected with by sealing ring 176, connector 52 is moved up and down along 55 inner wall of cylinder, is passed through on cylinder 55
Sealing ring 177 is sealedly connected with opening tool 54, and the top of valve body 1 is removably connected with valve deck 14, valve deck by gland nut 18
14 are sealedly connected on valve body 1 by sealing ring 178, open up that there are two the through-holes that can be connected with exhaust passage 3 on valve deck 14
141.When being moved upward to the top of valve body 1 in order to avoid opening tool 54, the top surface of opening tool 54 and the inner top surface phase of valve deck 14
It supports, causes gas that the external world can not be discharged by through-hole 141, the summit portion of opening tool 54 raises upward, and forms groove in protrusion
541, thus can be by 541 row of groove to through-hole 141 by the gas in exhaust passage 3.In order to adjust the pressure of return unit 51
Contracting amount adjusts the restoring force of return unit 51, the top peripheral of valve rod 2 is arranged with revolving part 53, which is located at connection
The top of part 52, which can be the special flat serrated nut of small hexagonal, by revolving part 53 along upper and lower turn of valve rod 2
It is dynamic, the deformation quantity of adjustable return unit 51, and then adjust the size or root of the minimum pressure that actuatable valve bar 2 moves down
According to the maximum distance for needing regulating valve stem 2 to move down.
Pressure regulating device includes mounting base 41, the elastic component 42 that can be moved up and down in mounting base 41, up and down is connected to
Regulating part 43 at the top of mounting base 41 and the blocking piece 44 set on 42 lower end of elastic component, are equipped between regulating part 43 and mounting base 41 and use
In the locking nut 47 for limiting relative position between regulating part 43 and mounting base 41, the restoring force of elastic component 42 is right by regulating part 43
The pressure of elastic component 42 determines, i.e., is determined by the decrement of elastic component 42, in order to improve Assembly stability, the lower end of regulating part 43
Equipped with adjustment seat 45, adjustment seat 45 can be moved up and down along 41 inner wall of mounting base, and adjustment seat 45 is in T-shaped, under adjustment seat 45
End is fastened on elastic component 42, in order to protect pressure regulating device, is provide with protective case 46 in the outside of mounting base 41.Blocking piece 44 is for sealing
The stifled through-hole 141 being provided on valve deck 14, the lower end of blocking piece 44 are in cone-shaped structure.
The working principle of the invention is: as shown in Figure 1, the high pressure gas in flask for medicinal preparations applies valve rod 2 when original state
One upward thrust, since 2 top of valve rod offsets with valve deck 14, container value is in close state.It is downward to adjust regulating part 43
The pressure of compression elastic piece 42 completes setting for pressure regulating device safety value so as to adjust plug 44 to the closure pressure of through-hole 141
Fixed, by high voltage startup gas in air inlet 15, portion gas enters exhaust passage 3 by the lumen b of valve body 1.Such as Fig. 2 institute
Show, when starting gas pressure greater than safety value initially set, high voltage startup gas opens plug 44 upwards, i.e. pressure regulator
Structure is in the first working position, so that exhaust passage 3 is connected with through-hole 141, gas flows in the direction of the arrow, a part of high pressure gas
Body is arranged outwardly, until the pressure of starting gas is suitable with safety value initially set, another part gas passes through opening tool 54
Valve rod 2 is pushed to move down, the lumen b of valve body 1 is connected with cavity of resorption c, i.e., air inlet 15 is connected with gas outlet 16, container value
It opens.As shown in figure 3, high voltage startup gas can not incite somebody to action when starting gas pressure equal to or less than safety value initially set
Plug 44 opens upwards, i.e., pressure regulating device is in the second working position, so that exhaust passage 3 is isolated with through-hole 141, without high pressure
Gas is arranged outwardly, and gas flows in the direction of the arrow, and all gas pushes valve rod 2 to move down by opening tool 54, valve body 1
Lumen b is connected with cavity of resorption c, i.e., air inlet 15 is connected with gas outlet 16, and container value is opened.
Above-mentioned specific embodiment is used to illustrate the present invention, rather than limits the invention, of the invention
In spirit and scope of protection of the claims, to any modifications and changes that the present invention makes, protection model of the invention is both fallen within
It encloses.
Claims (8)
1. a kind of constant pressure type container value, described including valve body (1), the valve rod (2) and position-limit mechanism that can move in valve body (1)
Valve rod (2) is sealedly attached in valve body (1), and the valve body (1) is equipped with the air inlet (15) and outlet passed through for driving gas
Mouth (16), it is characterised in that: the valve body (1) is equipped with pressure regulating device and the exhaust passage (3) with pressure regulating device cooperation, should
It is internal and extraneous that exhaust passage (3) can be connected to air inlet (15), valve body (1)；The position-limit mechanism includes close with valve body (1) inner wall
The opening tool (54) of cooperation is sealed, which offsets with valve rod (2) to push valve rod (2) to move down；The exhaust is logical
Road (3) can cooperate with valve rod (2), position-limit mechanism, so that pressure regulating device has the first working position and the second working position, when in the
When one working position, the partial high pressure gas in the exhaust passage (3) can push pressure regulating device to move up, the exhaust passage (3)
It is connected with the external world, the partial high pressure gas push opening tool (54) in the exhaust passage (3) makes valve rod (2) move down connection
Air inlet (15) and gas outlet (16), to open container value；When being in the second working position, pressure regulating device is by exhaust passage (3)
It is isolated with the external world, the high pressure gas in the exhaust passage (3) pushes opening tool (54) that valve rod (2) is moved down to open and hold
Device valve；
The pressure regulating device includes mounting base (41), the elastic component (42) that can be moved up and down in mounting base (41), for adjusting
The regulating part (43) of elastic component (42) decrement and the blocking piece (44) to offset with elastic component (42) one end, the blocking piece (44) and row
Gas channel (3) cooperation.
2. constant pressure type container value according to claim 1, it is characterised in that: the position-limit mechanism includes being sheathed on valve rod
(2) return unit (51) on, the positioning region (11) in valve body (1) and connector (52), the connector (52) and valve body
(1) inner wall sealing cooperation, described return unit (51) one end offset with positioning region (11), and the other end is butted on connector (52).
3. constant pressure type container value according to claim 2, it is characterised in that: the position-limit mechanism further includes revolving part
(53), the revolving part (53) and valve rod (2) cooperate, and can move up and down the decrement for adjusting return unit (51).
4. constant pressure type container value according to claim 1, it is characterised in that: be equipped with and exhaust at the top of the opening tool (54)
The groove (541) that channel (3) is connected.
5. constant pressure type container value according to claim 1, it is characterised in that: be sealedly connected with closure on the valve body (1)
Part (12), the closeouts (12) are interior to form the cavity (121) that can be connected with exhaust passage (3), activity in the cavity (121)
Equipped with anti-blocking piece (131).
6. constant pressure type container value according to claim 5, it is characterised in that: be equipped with adjusting plug in the cavity (121)
(13), the anti-blocking piece (131) is movably connected in the adjusting plug (13).
7. constant pressure type container value according to claim 1, it is characterised in that: the valve rod (2) passes through V-shaped seal ring (21)
It is tightly connected with valve body (1).
8. constant pressure type container value according to claim 1, it is characterised in that: the valve body (1) is equipped with valve deck (14), should
Valve deck (14) is equipped with the through-hole (141) of connection exhaust passage (3) and the external world, and the blocking piece (44) is provided with valve deck for blocking
(14) through-hole (141) on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610411847.8A CN106015714B (en) | 2016-06-14 | 2016-06-14 | Constant pressure type container value |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610411847.8A CN106015714B (en) | 2016-06-14 | 2016-06-14 | Constant pressure type container value |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106015714A CN106015714A (en) | 2016-10-12 |
| CN106015714B true CN106015714B (en) | 2019-10-18 |
Family
ID=57090405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610411847.8A Active CN106015714B (en) | 2016-06-14 | 2016-06-14 | Constant pressure type container value |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106015714B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413089A (en) * | 2018-05-29 | 2018-08-17 | 浙江信达可恩消防实业有限责任公司 | A kind of pressure-reduced and-regulated output device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB520153A (en) * | 1937-11-16 | 1940-04-16 | Vickers Inc | Improvements in or relating to reducing valves |
| US6615865B1 (en) * | 1999-07-06 | 2003-09-09 | Eusebi Implanti-S.R.L. | Valve for high pressure gas cylinders |
| CN200952591Y (en) * | 2006-04-27 | 2007-09-26 | 上海金盾实业集团有限公司 | Pressure-relief valve and stand-by pressing fire fighting device |
| CN201973293U (en) * | 2011-03-14 | 2011-09-14 | 宁波三安制阀有限公司 | Bottle head valve |
| CN202207417U (en) * | 2011-06-01 | 2012-05-02 | 浙江信达可恩消防实业有限责任公司 | Container valve |
| CN202708279U (en) * | 2012-08-31 | 2013-01-30 | 宁波三安制阀有限公司 | Bottle head valve for fire-fighting equipment |
| CN204170335U (en) * | 2014-09-24 | 2015-02-25 | 广州市佰力消防设备有限公司 | A kind of fire trace tube automatic fire extinguisher container value |
| CN205896356U (en) * | 2016-06-14 | 2017-01-18 | 浙江信达可恩消防实业有限责任公司 | Constant voltage formula container valve |
-
2016
- 2016-06-14 CN CN201610411847.8A patent/CN106015714B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB520153A (en) * | 1937-11-16 | 1940-04-16 | Vickers Inc | Improvements in or relating to reducing valves |
| US6615865B1 (en) * | 1999-07-06 | 2003-09-09 | Eusebi Implanti-S.R.L. | Valve for high pressure gas cylinders |
| CN200952591Y (en) * | 2006-04-27 | 2007-09-26 | 上海金盾实业集团有限公司 | Pressure-relief valve and stand-by pressing fire fighting device |
| CN201973293U (en) * | 2011-03-14 | 2011-09-14 | 宁波三安制阀有限公司 | Bottle head valve |
| CN202207417U (en) * | 2011-06-01 | 2012-05-02 | 浙江信达可恩消防实业有限责任公司 | Container valve |
| CN202708279U (en) * | 2012-08-31 | 2013-01-30 | 宁波三安制阀有限公司 | Bottle head valve for fire-fighting equipment |
| CN204170335U (en) * | 2014-09-24 | 2015-02-25 | 广州市佰力消防设备有限公司 | A kind of fire trace tube automatic fire extinguisher container value |
| CN205896356U (en) * | 2016-06-14 | 2017-01-18 | 浙江信达可恩消防实业有限责任公司 | Constant voltage formula container valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106015714A (en) | 2016-10-12 |
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