CN103672087A - Special valve for pressure-bearing water storage equipment - Google Patents
Special valve for pressure-bearing water storage equipment Download PDFInfo
- Publication number
- CN103672087A CN103672087A CN201310743391.1A CN201310743391A CN103672087A CN 103672087 A CN103672087 A CN 103672087A CN 201310743391 A CN201310743391 A CN 201310743391A CN 103672087 A CN103672087 A CN 103672087A
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- China
- Prior art keywords
- air inlet
- valve
- valve body
- air
- safety valve
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 38
- 238000001914 filtration Methods 0.000 claims abstract description 13
- 238000009736 wetting Methods 0.000 claims description 27
- 210000004907 gland Anatomy 0.000 claims description 7
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
- B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
-
- 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
- F16K17/048—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 combined with other safety valves, or with pressure control devices
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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
- 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
- F16K17/12—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side weight-loaded
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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
- F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
- F16K24/04—Devices, e.g. valves, for venting or aerating enclosures for venting only
- F16K24/042—Devices, e.g. valves, for venting or aerating enclosures for venting only actuated by a float
- F16K24/044—Devices, e.g. valves, for venting or aerating enclosures for venting only actuated by a float the float being rigidly connected to the valve element, the assembly of float and valve element following a substantially translational movement when actuated, e.g. also for actuating a pilot valve
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Details Of Valves (AREA)
Abstract
The invention belongs to the technical field of air inlet valves of pressure-bearing water storage equipment, and particularly relates to a special valve for pressure-bearing water storage equipment. The special valve mainly solves the technical problems that an existing special valve for the pressure-bearing water storage equipment is not convenient to open manually, poor in sealing performance and low in sensitivity, and an air inlet valve leaks water. The special valve for the pressure-bearing water storage equipment comprises an air filtering device, an air inlet device, an air inlet and outlet control device, a valve body and a valve deck, wherein the air inlet and outlet control device is arranged on the upper portion of an inner cavity of the valve body and makes a floater located in the inner cavity of the valve body, the valve deck is connected with the upper portion of the valve body, the air inlet and outlet control device is fixed in the inner cavity of the valve body, an inner thread hole connected with a connecting elbow of the air inlet device is connected with the upper portion of an air inlet mouth of a valve element of the air inlet and outlet control device, the air inlet device is installed on the upper end face of the valve deck, the air filtering device is arranged on the valve deck, and the air inlet device is covered with the air filtering device. The special valve for the pressure-bearing water storage equipment has the advantages of being capable of being automatically opened, good in sealing performance and high in sensitivity, and water will not be leaked when faults happen.
Description
Technical field
The invention belongs to the suction valve technical field of water system pressure bearing stored wetting system, be specifically related to a kind of pressure bearing stored wetting system special valve.
Background technique
Pressure bearing stored wetting system is a water cell in water system, in water system, supplies water in normal situation, and pressure bearing stored wetting system is a part for pipeline, has the hydraulic pressure equating with pressure of supply water.And while breaking down (such as hydraulic pressure deficiency, Pipeline damage, overhaul of the equipments etc.) in water supply, water stored in pressure bearing stored wetting system can continue to provide life and process water for user.Pressure bearing stored wetting system in use, when outside water system is cut off the water and pipe-line system is high-order while forming negative pressure, although pressure bearing stored wetting system inside has been full of water, user still there will be the problem that flows not water outlet while opening with water valve.
Notification number is that the patent of CN102425696B discloses a kind of special manual suction valve installing in pressure bearing stored wetting system, this patent solved pressure bearing stored wetting system externally water system cut off the water and flow the problem of not water outlet while forming negative pressure pipe-line system is high-order, but shortcoming that this patent exists manually opened inconvenience, poor sealing and suction valve to leak.
Next is, the profile that has a kind of valve body is that cylindrical, middle and upper part is that truncated cone, middle and lower part are that Hexagon and bottom are cylindrically to form by top, the inner chamber of valve body is that cylindrical, middle part is that truncated cone and bottom are cylindrically to form by top, circular cone place at body cavity middle part is provided with annular boss, in the outside at the upper and lower two ends of valve body, be provided with externally threaded special valve, although can be good at solving the problem of above-mentioned existence, but for for some main equipments, exist the sensitivity affecting while using due to young.
Summary of the invention
The object of the invention is the low technical problem of sensitivity in order to solve manually opened inconvenience, poor sealing, suction valve that existing pressure bearing stored wetting system special valve exists and to leak and use, a kind of pressure bearing stored wetting system special valve is provided.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
Pressure bearing stored wetting system special valve, it comprises air filter, air inlet system, enter air outlet control device, valve body (1) and valve gap (17), entering air outlet control device is arranged on the top of valve body (1) inner chamber and makes float (20) be arranged in the inner chamber of valve body (1), valve gap (17) is connected with the top of valve body (1) and will enters air outlet control device and is fixed in valve body (1) inner chamber, the inner bolt hole of the connection elbow (8) of air inlet system is connected and air inlet system is contained on the upper-end surface of valve gap (17) with the air inlet nozzle top of entering the spool (4) of air outlet control device, air filter is located at valve gap (17) above and air inlet system is covered.
Air filter described in it is comprised of buckle closure (7) and air filtering core (6), buckle closure (7) is drum body, the sidewall of buckle closure (7) is evenly provided with 4～8 square vents, the cylindrical body that air filtering core (6) is hollow, and air filtering core (6) is located on the inwall of buckle closure (7).
Air inlet system described in it is comprised of safe valve gap (14), cone-shaped sealed gland (13), safety valve and connection elbow (8), centre at safe valve gap (14) is provided with cone shape hole, cone-shaped sealed gland (13) is located in the cone shape hole of safe valve gap (14), the afterbody of safe valve gap (14) is connected with the front end of safety valve, the tail end of safety valve is connected with the front end that connects elbow (8), and the tail end that connects elbow (8) is connected with the air inlet nozzle of spool (4).
Described in it, enter air outlet control device by spool (4), seal rubber pad (3), " U " type spring (18), tolerance control panel (2) and float (19) form, one side at spool (4) is provided with air inlet nozzle, the lower end that the tail end of tolerance control panel (2) and spool (4) are arranged on air inlet nozzle bottom attachment post be on one side connected and be positioned at air inlet nozzle below, seal rubber pad (3) is contained in tolerance control panel (2) groove corresponding with air inlet nozzle lower end (20), the afterbody opening end of " U " type spring (18) is located at spool (4) and is arranged on the spring seat of air inlet nozzle both sides, the head of " U " type spring (18) is contained in the groove making progress (21) of tolerance control panel (2) front end end setting, the leading portion on " U " type spring (18) both sides is arranged in the draw-in groove under shed (22) that tolerance control panel (19) leading portion both sides arrange, the peg of float (19) is suspended on tolerance control panel (2) through the upper cruciform vent (22) arranging of tolerance control panel (2).
Valve body described in it (1) be hollow circular cylinder, the outer wall of its lower end is provided with hexagonal boss.
Valve gap described in it (17) profile top is circular lid, and bottom is hexagon; The inner chamber of valve gap (17) be cylindrical and within it wall be provided with internal thread.
Safety valve described in it is comprised of Safety valve body (11), ball float (12) and bottom (16), Safety valve body (10) is three-way type body, the rear end of Safety valve body (11) is provided with internal thread, the front end of Safety valve body (11) is provided with outside thread, the 3rd port of Safety valve body (11) is provided with internal thread, and bottom (16) is contained on the 3rd port of Safety valve body (11) and ball float (12) is arranged in the 3rd valve opening of Safety valve body (11).
The present invention invents and adopts above technological scheme, and valve body adopts hollow circular cylinder, and the outer wall of its lower end is provided with hexagonal boss structure, for being used in large-scale setting when middle, convenient, has solved the not high problem of sensitivity; In body cavity and equipment, water body feature is more approaching, when pressure bearing stored wetting system inflow is zero, the inner water rate of holding is that 100%(was when both existed without air) situation under, as long as user opens with water switch, only a small amount of current can cause the reduction of water level in Special valve body, make float that downward displacement occur and open the inlet hole of spool, water in equipment can normally be flowed out, solve manually operated valve and open inconvenient technical problem; Between each component of special valve, be provided with a plurality of seal rings, solved the bad technical problem of special valve sealing effect; Special valve is provided with safety valve, and when special valve breaks down into water, water enters in safety valve, and ball float rises with the increase of rate of water added and shifts to cone-shaped sealed gland, prevents that the water that special valve enters from flowing to outside, solved the technical problem that special valve leaks.Therefore, compare with background technique, water-tight when the present invention has advantages of automatic unlatching, good airproof performance, fault, highly sensitive.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A sectional drawing of Fig. 1;
Fig. 3 is the B-B sectional drawing of Fig. 1;
Fig. 4 is the C-C sectional drawing of Fig. 1;
Fig. 5 is the worm's eye view of Fig. 1.
Embodiment
As shown in Fig. 1 to 5, pressure bearing stored wetting system special valve shown in the present embodiment, it comprises air filter, air inlet system, enter air outlet control device, valve body 1 and valve gap 17, entering air outlet control device is arranged on the top of valve body 1 inner chamber and makes float 20 be arranged in the inner chamber of valve body 1, valve 17) be connected with the top of valve body 1 and will enter air outlet control device and be fixed in valve body 1 inner chamber, the inner bolt hole of the connection elbow 8 of air inlet system is connected with the air inlet nozzle top of entering the spool 4 of air outlet control device and air inlet system is contained on the upper-end surface of valve gap 17, air filter is located on valve gap 17 and by air inlet system and covers.
Above-mentioned air filter is comprised of buckle closure 7 and air filtering core 6, and buckle closure 7 is drum body, and the sidewall of buckle closure 7 is evenly provided with 4～8 square vents, the cylindrical body that air filtering core 6 is hollow, and air filtering core 6 is located on the inwall of buckle closure 7.
Above-mentioned air inlet system is comprised of safe valve gap 14, cone-shaped sealed gland 13, safety valve and connection elbow 8, centre at safe valve gap 14 is provided with cone shape hole, cone-shaped sealed gland 13 is located in the cone shape hole of safe valve gap 14, the afterbody of safe valve gap 14 is connected with the front end of safety valve, the tail end of safety valve is connected with the front end that connects elbow 8, and the tail end that connects elbow 8 is connected with the air inlet nozzle of spool 4.
Above-mentionedly enter air outlet control device by spool 4, seal rubber pad 3, " U " type spring 18, tolerance control panel 2 and float 19) form, one side at spool 4 is provided with air inlet nozzle, the lower end that the tail end of tolerance control panel 2 and spool 4 are arranged on air inlet nozzle bottom attachment post be on one side connected and be positioned at air inlet nozzle below, seal rubber pad 3 is contained in tolerance control panel 2 groove corresponding with air inlet nozzle lower end 20, the afterbody opening end of " U " type spring 18 is located on the spring seat that spool 4 is arranged on air inlet nozzle both sides, the head of " U " type spring 18 is contained in the groove making progress 21 of tolerance control panel 2 front end ends settings, the leading portion on " U " type spring 18 both sides is arranged in the draw-in groove 22 under shed that tolerance control panel 19 leading portion both sides arrange, the peg of float 19 is suspended on tolerance control panel 2 through the cruciform vent 22 arranging on tolerance control panel 2.
Above-mentioned valve body 1 is hollow circular cylinder, and the outer wall of its lower end is provided with hexagonal boss.
Above-mentioned valve gap 17 profile tops are circular lid, and bottom is hexagon; The inner chamber of valve gap 17 be cylindrical and within it wall be provided with internal thread.
Above-mentioned safety valve is comprised of Safety valve body 11, ball float 12 and bottom 16, Safety valve body 10 is three-way type body, the rear end of Safety valve body 11 is provided with internal thread, the front end of Safety valve body 11 is provided with outside thread, the 3rd port of Safety valve body 11 is provided with internal thread, and bottom 16 is contained on the 3rd port of Safety valve body 11 and ball float 12 is arranged in the 3rd valve opening of Safety valve body 11.
When the present invention uses, be contained in the top of pressure bearing stored wetting system, when water filling in equipment, owing to entering the tolerance control panel 2 of air outlet control device and the air inlet nozzle of spool 4 in opening state, in equipment, original air is discharged through air inlet nozzle and the air inlet system of spool 4; After the in-built full water of equipment, the water level in valve body 1 chamber raises, and float 19 is under buoyancy of water effect, pulling force to tolerance control panel 2 reduces, tolerance control panel 2 is return under the effect of " U " type spring 18, makes seal rubber pad 3 be close to the vent of the air inlet nozzle of spool 4, and vent is sealed; When the water of pressure bearing stored wetting system reduces, float 19 is left behind the end of tolerance control panel 2 under Action of Gravity Field, thereby make seal rubber pad 3 depart from the vent of the air inlet nozzle of spool 4, outside air enters in air filter by the filtration of filter core, then by air inlet system with enter air outlet control device and enter in pressure bearing stored wetting system, avoid generation negative pressure in pressure bearing stored wetting system, thereby guarantee the normal use of pressure bearing stored wetting system.
Claims (7)
1. pressure bearing stored wetting system special valve, it is characterized in that: comprise air filter, air inlet system, enter air outlet control device, valve body (1) and valve gap (17), entering air outlet control device is arranged on the top of valve body (1) inner chamber and makes float (20) be arranged in the inner chamber of valve body (1), valve gap (17) is connected with the top of valve body (1) and will enters air outlet control device and is fixed in valve body (1) inner chamber, the inner bolt hole of the connection elbow (8) of air inlet system is connected and air inlet system is contained on the upper-end surface of valve gap (17) with the air inlet nozzle top of entering the spool (4) of air outlet control device, air filter is located at valve gap (17) above and air inlet system is covered.
2. a kind of pressure bearing stored wetting system special valve according to claim 1, it is characterized in that: described air filter is comprised of buckle closure (7) and air filtering core (6), buckle closure (7) is drum body, the sidewall of buckle closure (7) is evenly provided with 4～8 square vents, the cylindrical body that air filtering core (6) is hollow, air filtering core (6) is located on the inwall of buckle closure (7).
3. a kind of pressure bearing stored wetting system special valve according to claim 1, it is characterized in that: described air inlet system is comprised of safe valve gap (14), cone-shaped sealed gland (13), safety valve and connection elbow (8), centre at safe valve gap (14) is provided with cone shape hole, cone-shaped sealed gland (13) is located in the cone shape hole of safe valve gap (14), the afterbody of safe valve gap (14) is connected with the front end of safety valve, the tail end of safety valve is connected with the front end that connects elbow (8), and the tail end that connects elbow (8) is connected with the air inlet nozzle of spool (4).
4. a kind of pressure bearing stored wetting system special valve according to claim 1, it is characterized in that: described enters air outlet control device by spool (4), seal rubber pad (3), " U " type spring (18), tolerance control panel (2) and float (19) form, one side at spool (4) is provided with air inlet nozzle, the lower end that the tail end of tolerance control panel (2) and spool (4) are arranged on air inlet nozzle bottom attachment post be on one side connected and be positioned at air inlet nozzle below, seal rubber pad (3) is contained in tolerance control panel (2) groove corresponding with air inlet nozzle lower end (20), the afterbody opening end of " U " type spring (18) is located at spool (4) and is arranged on the spring seat of air inlet nozzle both sides, the head of " U " type spring (18) is contained in the groove making progress (21) of tolerance control panel (2) front end end setting, the leading portion on " U " type spring (18) both sides is arranged in the draw-in groove under shed (22) that tolerance control panel (19) leading portion both sides arrange, the peg of float (19) is suspended on tolerance control panel (2) through the upper cruciform vent (22) arranging of tolerance control panel (2).
5. a kind of pressure bearing stored wetting system special valve according to claim 1, is characterized in that: described valve body (1) be hollow circular cylinder, the outer wall of its lower end is provided with hexagonal boss.
6. a kind of pressure bearing stored wetting system special valve according to claim 1, is characterized in that: described valve gap (17) profile top is circular lid, and bottom is hexagon; The inner chamber of valve gap (17) be cylindrical and within it wall be provided with internal thread.
7. a kind of pressure bearing stored wetting system special valve according to claim 3, it is characterized in that: described safety valve is comprised of Safety valve body (11), ball float (12) and bottom (16), Safety valve body (10) is three-way type body, the rear end of Safety valve body (11) is provided with internal thread, the front end of Safety valve body (11) is provided with outside thread, the 3rd port of Safety valve body (11) is provided with internal thread, and bottom (16) is contained on the 3rd port of Safety valve body (11) and ball float (12) is arranged in the 3rd valve opening of Safety valve body (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310743391.1A CN103672087A (en) | 2013-12-30 | 2013-12-30 | Special valve for pressure-bearing water storage equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310743391.1A CN103672087A (en) | 2013-12-30 | 2013-12-30 | Special valve for pressure-bearing water storage equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103672087A true CN103672087A (en) | 2014-03-26 |
Family
ID=50310489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310743391.1A Pending CN103672087A (en) | 2013-12-30 | 2013-12-30 | Special valve for pressure-bearing water storage equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103672087A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122570A (en) * | 2016-08-04 | 2016-11-16 | 上海申吉仪表有限公司 | Diesel coolant bypass valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06129558A (en) * | 1992-10-13 | 1994-05-10 | Maezawa Kiyuusou Kogyo Kk | Emergency shut-off valve |
| CN2898514Y (en) * | 2006-01-12 | 2007-05-09 | 莫奏铖 | Self-blocking controlling valve of water-supply ball for solar water heater |
| CN101761686A (en) * | 2008-12-23 | 2010-06-30 | 王贵林 | Special inlet and exhaust valve arranged on pressure water tank |
| CN102425696A (en) * | 2011-12-21 | 2012-04-25 | 王贵林 | Special manual air inlet valve for device in bearing water storage equipment |
| CN102494177A (en) * | 2011-12-21 | 2012-06-13 | 王贵林 | Automatic special valve arranged on pressure bearing water storage equipment |
| CN203670961U (en) * | 2013-12-30 | 2014-06-25 | 忻州市飞鸣节水设备有限公司 | Special valve for pressure-bearing water storage equipment |
-
2013
- 2013-12-30 CN CN201310743391.1A patent/CN103672087A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06129558A (en) * | 1992-10-13 | 1994-05-10 | Maezawa Kiyuusou Kogyo Kk | Emergency shut-off valve |
| CN2898514Y (en) * | 2006-01-12 | 2007-05-09 | 莫奏铖 | Self-blocking controlling valve of water-supply ball for solar water heater |
| CN101761686A (en) * | 2008-12-23 | 2010-06-30 | 王贵林 | Special inlet and exhaust valve arranged on pressure water tank |
| CN102425696A (en) * | 2011-12-21 | 2012-04-25 | 王贵林 | Special manual air inlet valve for device in bearing water storage equipment |
| CN102494177A (en) * | 2011-12-21 | 2012-06-13 | 王贵林 | Automatic special valve arranged on pressure bearing water storage equipment |
| CN203670961U (en) * | 2013-12-30 | 2014-06-25 | 忻州市飞鸣节水设备有限公司 | Special valve for pressure-bearing water storage equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122570A (en) * | 2016-08-04 | 2016-11-16 | 上海申吉仪表有限公司 | Diesel coolant bypass valve |
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| PB01 | Publication | ||
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Application publication date: 20140326 |