CN109268542A - A kind of open and close method of pipeline valve bilayer spool assembly - Google Patents
A kind of open and close method of pipeline valve bilayer spool assembly Download PDFInfo
- Publication number
- CN109268542A CN109268542A CN201811349597.5A CN201811349597A CN109268542A CN 109268542 A CN109268542 A CN 109268542A CN 201811349597 A CN201811349597 A CN 201811349597A CN 109268542 A CN109268542 A CN 109268542A
- Authority
- CN
- China
- Prior art keywords
- spool
- valve
- double
- deck
- barrel
- 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
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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
-
- 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
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated 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
- F16K43/00—Auxiliary closure means in valves, which in case of repair, e.g. rewashering, of the valve, can take over the function of the normal closure means; Devices for temporary replacement of parts of valves for the same purpose
- F16K43/001—Auxiliary closure means in valves, which in case of repair, e.g. rewashering, of the valve, can take over the function of the normal closure means; Devices for temporary replacement of parts of valves for the same purpose an auxiliary valve being actuated independently of the main valve
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The present invention relates to a kind of open and close methods of pipeline valve bilayer spool assembly, it is characterized by: open and close method of the pipeline valve bilayer spool assembly using pipeline bilayer spool barrel valve and the double-deck spool non-return valve composite unit structure and pipeline bilayer spool barrel valve and the double-deck spool non-return valve assembly, when the double-deck spool barrel valve working condition and online production, stopping bilayer spool non-return valve when online production, there are three types of working conditions.The open and close method of inventive pipeline valve bilayer spool assembly, on-line maintenance, replacement valve body, spool can not be carried out by solving barrel valve, non-return valve, under conditions of service line does not stop media flow, by different open and close bilayer spool barrel valves, the double-deck spool non-return valve, realize that the double-deck spool barrel valve, spool or the double-deck spool non-return valve valve rod, spool are overhauled online.Specifically on toxic, unwanted dynamics pipeline, the barrel valve of single use, non-return valve maintenance, update bring great convenience.
Description
Technical field
The invention belongs to pipeline valve maintenance technology fields, are related to a kind of in the premise for not influencing power conduit media flow
Under the conditions of, pass through open and close online production, maintenance or the replacement of pipeline bilayer spool barrel valve and the double-deck spool non-return valve assembly
The method that pipeline barrel valve, non-return valve are not at the expense of production, in particular to a kind of open and close side of pipeline valve bilayer spool assembly
Method.
Background technique
Currently, metallurgy, ore dressing, petroleum, chemical industry, coal fired power generation, nuclear power generation, nuclear power, coal gas, natural gas, steaming both at home and abroad
The industries such as vapour, sewage purification, water supply pipe have gas and the pipeline of fluid media (medium) flowing to be equipped with the opening and closing such as barrel valve, non-return valve
Device.The main function for these devices that tradition uses in the prior art is ensuring that required production, maintenance, control stream
Amount guarantees that all kinds of techniques operate normally.When the opening and closing devices such as various pipes barrel valve, non-return valve were used to latter stage, it is necessary to seal
It is overhauled and is replaced after stopping local dynamic effect pipeline media flow or even the opening and closings such as barrel valve, non-return valve that key position uses
Device maintenance and replacement must carry out the fundamental prerequisite completely to stop production as maintenance replacement.The replacing valve period that tradition uses
Generally 1 ~ 3 year, go into operation operation late gate maintenance, replacement also need to spend a large amount of expenses, exist: can not carry out on-line maintenance,
The problems such as replacing valve body, spool, valve rod.
Summary of the invention
The present invention overcomes above-mentioned existing defects, it is therefore an objective to solve in the premise item for not influencing power conduit media flow
Under part, on-line maintenance replaces the problems such as valve body, spool, valve rod, provides a kind of open and close of pipeline valve bilayer spool assembly
Method.
The open and close method content Description of inventive pipeline valve bilayer spool assembly:
The open and close method of inventive pipeline valve bilayer spool assembly, it is characterised in that: pipeline valve bilayer spool assembly
Using pipeline bilayer spool barrel valve and the double-deck spool non-return valve composite unit structure and pipeline bilayer spool barrel valve and double beat valve
The open and close method of core check valve assembly；
Pipeline valve bilayer spool assembly is using pipeline bilayer spool barrel valve and the double-deck spool non-return valve composite unit structure；
By: medium, pipeline, the double-deck spool check valve case, the double-deck spool barrel valve valve rod, the double-deck spool barrel valve valve deck, the double-deck spool
Barrel valve positioning bolt, the double-deck spool barrel valve valve body, the double-deck spool non-return valve valve rod, the double-deck spool non-return valve valve deck, connection
Bolt and the double-deck spool non-return valve positioning bolt composition, the connection between the double-deck spool non-return valve valve body inlet, outlet conduit
Place's setting is in 0~180 degree angle.
The open and close method of pipeline bilayer spool barrel valve and the double-deck spool non-return valve assembly, the double-deck spool barrel valve work
When making state and online production, stopping bilayer spool non-return valve when online production, there are three types of working conditions:
(1), when online production, the double-deck spool non-return valve is worked normally, and medium enters the double-deck spool non-return valve valve by pipeline
Body adjusts and fastens the double-deck spool barrel valve positioning bolt, the double-deck spool barrel valve first layer spool is made to be in closed state, double-deck
Spool barrel valve second layer spool open state, it is inverse that the double-deck spool non-return valve first layer spool is in air-tight state, the double-deck spool
Only valve second layer spool is in the open state；It adjusts and fastens the double-deck spool non-return valve positioning bolt, it is inverse that medium passes through the double-deck spool
Only valve body outlet conduit flows out, and at this moment can replace online: the double-deck spool barrel valve valve rod, the double-deck spool barrel valve valve deck, double
Layer spool barrel valve positioning bolt, the double-deck spool barrel valve valve body, the double-deck spool barrel valve first layer spool and the double-deck valve element circle
Column valve second layer spool；
(2), double when the double-deck spool barrel valve is with the double-deck spool non-return valve assembly stopping online production when stopping online production
Layer spool non-return valve working condition: adjusting the double-deck spool non-return valve, fastens the double-deck spool non-return valve positioning bolt, makes the double-deck spool
Non-return valve first layer spool and the double-deck spool non-return valve second layer spool are in air-tight state, medium and enter double beat valve by pipeline
Core non-return valve valve body inlet stops outflow by the medium of the double-deck spool non-return valve valve outlet pipeline, at this moment can replace online:
The double-deck spool barrel valve valve rod, the double-deck spool barrel valve valve deck, the double-deck spool barrel valve positioning bolt, the double-deck spool barrel valve valve
Body, the double-deck spool barrel valve first layer spool and the double-deck spool barrel valve second layer spool；
(3), the double-deck spool barrel valve and the double-deck spool non-return valve assembly bilayer spool barrel valve working condition, in the double-deck spool
Junction setting between non-return valve valve body inlet pipeline and the double-deck spool non-return valve valve outlet pipeline is in 0~180 degree angle,
When online production bilayer spool barrel valve works normally, medium enters the double-deck spool non-return valve valve body by pipeline, adjusts tight
Gu the double-deck spool barrel valve positioning bolt makes the double-deck spool barrel valve first layer spool and the double-deck spool barrel valve second layer spool
In closed state, the double-deck spool non-return valve first layer spool, the double-deck spool non-return valve second layer spool are in the open state, are situated between
Matter passes through the double-deck spool non-return valve valve outlet pipeline outflow, replaceable bilayer spool non-return valve first layer spool, the double-deck spool
Non-return valve second layer spool and the double-deck spool non-return valve valve rod.
The open and close method of inventive pipeline valve bilayer spool assembly, solving barrel valve, non-return valve can not carry out
Line maintenance, replacement valve body, spool pass through different open and close bilayer valve element circles under conditions of service line does not stop media flow
Column valve, the double-deck spool non-return valve realize that the double-deck spool barrel valve, spool or the double-deck spool non-return valve valve rod, spool carry out online
Maintenance.Specifically on toxic, unwanted dynamics pipeline, the barrel valve of single use, non-return valve maintenance, update bring great side
Just.
Detailed description of the invention
Fig. 1 is the double-deck spool barrel valve and the double-deck spool non-return valve composite unit structure figure；
Bilayer spool non-return valve working condition when Fig. 2 is the double-deck spool barrel valve and the double-deck spool non-return valve assembly online production
Figure；
Fig. 3 is that the double-deck spool barrel valve and the double-deck spool non-return valve assembly stop bilayer spool non-return valve when online production and work
State diagram；
Fig. 4 is the double-deck spool barrel valve and the double-deck spool non-return valve assembly bilayer spool barrel valve working state figure；
In figure: 1 being medium, 2 be pipeline, 3 be the double-deck spool check valve case, 4 be the double-deck spool barrel valve valve rod, 5 be double beat valve
Core barrel valve valve deck, 6 be the double-deck spool barrel valve positioning bolt, 7 be the double-deck spool barrel valve valve body, 8 be the double-deck spool check
Valve valve rod, 9 be the double-deck spool non-return valve valve deck, 10 be connection bolt, 11 be the double-deck spool non-return valve positioning bolt, 12 be double-deck
Spool barrel valve first layer spool, 13 be the double-deck spool barrel valve second layer spool, 14 be the double-deck spool non-return valve first layer valve
Core, 15 be the double-deck spool non-return valve second layer spool, 16 be the double-deck spool non-return valve valve rod fastening bolt, 17 be that the double-deck spool is inverse
Only valve second layer cartridge cover.
Specific embodiment
The open and close method of inventive pipeline valve bilayer spool assembly is achieved in that pipeline valve bilayer spool
Assembly using pipeline bilayer spool barrel valve and the double-deck spool non-return valve composite unit structure and pipeline bilayer spool barrel valve with
The open and close method of the double-deck spool non-return valve assembly, illustrates with reference to the accompanying drawing.
Inventive pipeline valve bilayer spool assembly, using pipeline bilayer spool barrel valve and the double-deck spool non-return valve group
Whole body structure；The structure for seeing Fig. 1, pipeline bilayer spool barrel valve and the double-deck spool non-return valve assembly, by: medium 1, pipeline 2,
The double-deck spool check valve case 3, the double-deck spool barrel valve valve rod 4, the double-deck spool barrel valve valve deck 5, the double-deck spool barrel valve positioning
Bolt 6, the double-deck spool barrel valve valve body 7, the double-deck spool non-return valve valve rod 8, the double-deck spool non-return valve valve deck 9, connection bolt 10
It is formed with the double-deck spool non-return valve positioning bolt 11, the junction between double-deck 3 entrance of spool non-return valve valve body, outlet conduit
Setting is in 0~180 degree angle.
The open and close method of pipeline bilayer spool barrel valve and the double-deck spool non-return valve assembly, the double-deck spool barrel valve work
When making state and online production, stopping bilayer spool non-return valve when online production, there are three types of working conditions.
Bilayer spool non-return valve work when seeing Fig. 2, the double-deck spool barrel valve and the double-deck spool non-return valve assembly online production
Make state, when online production bilayer spool non-return valve works normally, medium 1 enters the double-deck spool non-return valve valve by pipeline 2
Body 3 adjusts and fastens the double-deck spool barrel valve positioning bolt 6, the double-deck spool barrel valve first layer spool 12 is made to be in closed state,
Double-deck 13 open state of spool barrel valve second layer spool, the double-deck spool non-return valve first layer spool 14 are in air-tight state, double
Layer spool non-return valve second layer spool 15 is in the open state；It adjusts and fastens the double-deck spool non-return valve positioning bolt 11, medium 1 is logical
The double-deck 3 outlet conduit outflow of spool non-return valve valve body is crossed, at this moment can be replaced online: the double-deck spool barrel valve valve rod 4, the double-deck spool
Barrel valve valve deck 5, the double-deck spool barrel valve positioning bolt 6, the double-deck spool barrel valve valve body 7, the double-deck spool barrel valve first layer
Spool 12 and the double-deck spool barrel valve second layer spool 13.
See that Fig. 3, the double-deck spool barrel valve and the double-deck spool non-return valve assembly stop bilayer spool check when online production
Valve working condition, when stopping online production: the double-deck spool non-return valve of adjusting, the double-deck spool non-return valve positioning bolt 11 of fastening,
Keep the double-deck spool non-return valve first layer spool 14 and the double-deck spool non-return valve second layer spool 15 logical in air-tight state, medium 1
Piping 2 enters double-deck 3 entrance of spool non-return valve valve body, is stopped by the medium 1 of double-deck 3 outlet conduit of spool non-return valve valve body
Outflow, at this moment can replace online: the double-deck spool barrel valve valve rod 4, the double-deck spool barrel valve valve deck 5, the double-deck spool barrel valve are fixed
Position bolt 6, the double-deck spool barrel valve valve body 7, the double-deck spool barrel valve first layer spool 12 and the double-deck spool barrel valve second layer
Spool 13.
Fig. 4, the double-deck spool barrel valve and the double-deck spool non-return valve assembly bilayer spool barrel valve working condition are seen, double
Junction setting between 3 inlet duct of layer spool check valve body and double-deck 3 outlet conduit of spool non-return valve valve body in 0~
180 degree angle.When online production bilayer spool barrel valve works normally, medium 1 enters the double-deck spool non-return valve by pipeline 2
Valve body 3 adjusts and fastens the double-deck spool barrel valve positioning bolt 6, makes the double-deck spool barrel valve first layer spool 12 and the double-deck spool
Barrel valve second layer spool 13 is in closed state, the double-deck spool non-return valve first layer spool 14, the double-deck spool non-return valve second
Layer spool 15 is in the open state, and medium 1 passes through the double-deck 3 outlet conduit outflow of spool non-return valve valve body, replaceable bilayer spool
Non-return valve first layer spool 14, the double-deck spool non-return valve second layer spool 15 and the double-deck spool non-return valve valve rod 8.
The present invention is a kind of under the precondition for not influencing media flow, passes through the double-deck spool barrel valve and the double-deck spool
The process of the successive open and close of check valve assembly replaces barrel valve, spool, check valve core, valve rod, it is ensured that power pipe at any time
Line media flow remains technique requirement, and the double-deck spool barrel valve, the double-deck spool non-return valve are in good technology shape always
State.In all kinds of power conduit medium transmission process, using all kinds of barrel valves, non-return valve etc., maintenance, replacement must seal and stop power pipe
It after line media flow, can be overhauled, the original process of replacement, be changed are as follows: before not influencing power conduit media flow
Under the conditions of mentioning, the process of successive open and close is combined with the double-deck spool non-return valve by the double-deck spool barrel valve, replacement is double at any time
Layer spool barrel valve, spool, non-return valve valve rod, spool, it is ensured that service line media flow remains technique requirement, double beat valve
Core barrel valve, the double-deck spool non-return valve are in good state of the art always.It can be repaired or more while online production
Change the process of barrel valve, non-return valve.
The open and close method of inventive pipeline valve bilayer spool assembly, solving barrel valve, non-return valve can not carry out
Line maintenance, replacement valve body, spool pass through different open and close bilayer valve element circles under conditions of service line does not stop media flow
Column valve, the double-deck spool non-return valve realize that the double-deck spool barrel valve, spool or the double-deck spool non-return valve valve rod, spool carry out online
Maintenance.Specifically on toxic, unwanted dynamics pipeline, the barrel valve of single use, non-return valve maintenance, update bring great side
Just.
Claims (2)
1. a kind of open and close method of pipeline valve bilayer spool assembly, it is characterised in that: pipeline valve bilayer spool assembly
Using pipeline bilayer spool barrel valve and the double-deck spool non-return valve composite unit structure and pipeline bilayer spool barrel valve and double beat valve
The open and close method of core check valve assembly；
Pipeline valve bilayer spool assembly is using pipeline bilayer spool barrel valve and the double-deck spool non-return valve composite unit structure；
By: medium (1), pipeline (2), the double-deck spool check valve case (3), the double-deck spool barrel valve valve rod (4), the double-deck spool barrel valve valve
Cover (5), the double-deck spool barrel valve positioning bolt (6), the double-deck spool barrel valve valve body (7), the double-deck spool non-return valve valve rod (8),
The double-deck spool non-return valve valve deck (9), connection bolt (10) and the double-deck spool non-return valve positioning bolt (11) form, in the double-deck spool
Junction setting between check valve body (3) entrance, outlet conduit is in 0~180 degree angle.
2. a kind of open and close method of pipeline bilayer spool barrel valve and the double-deck spool non-return valve assembly, it is characterised in that: pipeline
The open and close method of the double-deck spool barrel valve and the double-deck spool non-return valve assembly, the double-deck spool barrel valve working condition and online
When production, stopping bilayer spool non-return valve when online production, there are three types of working conditions:
(1), when online production, the double-deck spool non-return valve is worked normally, and medium (1) is inverse into the double-deck spool by pipeline (2)
Only valve body (3) adjust and fasten the double-deck spool barrel valve positioning bolt (6), make the double-deck spool barrel valve first layer spool (12)
In closed state, double-deck spool barrel valve second layer spool (13) open state, the double-deck spool non-return valve first layer spool
(14) in the open state in air-tight state, the double-deck spool non-return valve second layer spool (15)；It is inverse to adjust the double-deck spool of fastening
Only valve positioning bolt (11), medium (1) pass through double-deck spool non-return valve valve body (3) the outlet conduit outflow, at this moment can replace online:
The double-deck spool barrel valve valve rod (4), the double-deck spool barrel valve valve deck (5), the double-deck spool barrel valve positioning bolt (6), double beat valve
Core cylinder valve body (7), the double-deck spool barrel valve first layer spool (12) and the double-deck spool barrel valve second layer spool (13)；
(2), double when the double-deck spool barrel valve is with the double-deck spool non-return valve assembly stopping online production when stopping online production
Layer spool non-return valve working condition: adjusting the double-deck spool non-return valve, fastens the double-deck spool non-return valve positioning bolt (11), makes bilayer
It is logical that spool non-return valve first layer spool (14) and the double-deck spool non-return valve second layer spool (15) are in air-tight state, medium (1)
Piping (2) enters double-deck spool non-return valve valve body (3) entrance, passes through Jie of double-deck spool non-return valve valve body (3) outlet conduit
Matter (1) stops outflow, at this moment can replace online: the double-deck spool barrel valve valve rod (4), the double-deck spool barrel valve valve deck (5), bilayer
Spool barrel valve positioning bolt (6), the double-deck spool barrel valve valve body (7), the double-deck spool barrel valve first layer spool (12) and pair
Layer spool barrel valve second layer spool (13)；
(3), the double-deck spool barrel valve and the double-deck spool non-return valve assembly bilayer spool barrel valve working condition, in the double-deck spool
Junction setting between check valve body (3) inlet duct and double-deck spool non-return valve valve body (3) outlet conduit is in 0~180
Angle is spent, when online production bilayer spool barrel valve works normally, medium (1) enters the double-deck spool check by pipeline (2)
Valve body (3) adjusts and fastens the double-deck spool barrel valve positioning bolt (6), make the double-deck spool barrel valve first layer spool (12) and
The double-deck spool barrel valve second layer spool (13) is in closed state, the double-deck spool non-return valve first layer spool (14), double beat valve
Core non-return valve second layer spool (15) is in the open state, and medium (1) passes through double-deck spool non-return valve valve body (3) outlet conduit stream
Out, the replaceable double-deck spool non-return valve first layer spool (14), the double-deck spool non-return valve second layer spool (15) and the double-deck spool
Non-return valve valve rod (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811349597.5A CN109268542A (en) | 2018-11-14 | 2018-11-14 | A kind of open and close method of pipeline valve bilayer spool assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811349597.5A CN109268542A (en) | 2018-11-14 | 2018-11-14 | A kind of open and close method of pipeline valve bilayer spool assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109268542A true CN109268542A (en) | 2019-01-25 |
Family
ID=65193649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811349597.5A Pending CN109268542A (en) | 2018-11-14 | 2018-11-14 | A kind of open and close method of pipeline valve bilayer spool assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109268542A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111998144A (en) * | 2020-09-14 | 2020-11-27 | 河北西伯力特种橡胶有限公司 | Oil-resistant and flame-retardant high-pressure steel wire woven integrated rubber tube |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101506559A (en) * | 2005-05-19 | 2009-08-12 | Tdw特拉华有限公司 | High temperature completion plug |
| US20130098473A1 (en) * | 2011-10-20 | 2013-04-25 | Consolidated Edison Company Of New York, Inc. | Tool for Removing and Installing Plugs and Method of Operation |
| CN108644465A (en) * | 2018-07-25 | 2018-10-12 | 王梓骥 | A kind of open and close method of pipeline non-return valve, flashboard valve assembly |
| CN108662207A (en) * | 2018-07-13 | 2018-10-16 | 王梓骥 | A kind of open and close method of pipeline valve assembly |
-
2018
- 2018-11-14 CN CN201811349597.5A patent/CN109268542A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101506559A (en) * | 2005-05-19 | 2009-08-12 | Tdw特拉华有限公司 | High temperature completion plug |
| US20130098473A1 (en) * | 2011-10-20 | 2013-04-25 | Consolidated Edison Company Of New York, Inc. | Tool for Removing and Installing Plugs and Method of Operation |
| CN108662207A (en) * | 2018-07-13 | 2018-10-16 | 王梓骥 | A kind of open and close method of pipeline valve assembly |
| CN108644465A (en) * | 2018-07-25 | 2018-10-12 | 王梓骥 | A kind of open and close method of pipeline non-return valve, flashboard valve assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111998144A (en) * | 2020-09-14 | 2020-11-27 | 河北西伯力特种橡胶有限公司 | Oil-resistant and flame-retardant high-pressure steel wire woven integrated rubber tube |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3557822A (en) | Gate valve | |
| CN108644465A (en) | A kind of open and close method of pipeline non-return valve, flashboard valve assembly | |
| US11242954B2 (en) | Nozzle-type steam trap | |
| CN202280873U (en) | Safety changeover valve | |
| CN108662207A (en) | A kind of open and close method of pipeline valve assembly | |
| RU2374538C1 (en) | Multipurpose valve | |
| CN205330946U (en) | Compressor clearance tolerance governing system actuating mechanism's multiaction leak detection system | |
| CN109268542A (en) | A kind of open and close method of pipeline valve bilayer spool assembly | |
| CN210424507U (en) | Gas pressure regulating pry | |
| CN208503530U (en) | A kind of pressure sealing injection valve | |
| DE102011013097A1 (en) | Ball valve for selectively closing or opening passage by conduit from upstream supply line through positioning chamber to downstream discharge line, has handle, which is connected with actuating element within positioning chamber | |
| US3598154A (en) | Line blind valve | |
| CN205401796U (en) | Ultra -low temperature ball valve that floats | |
| CN204717034U (en) | Supporting type eccentric half-ball valve | |
| FI86761C (en) | STOP vALVE | |
| CN109237085A (en) | A kind of open and close method of pipeline double spool combination non-return valve | |
| CN211117689U (en) | Anti-leakage self-sealing valve | |
| CN101832418A (en) | Quick automatic cut-off instrument valve | |
| CN208535273U (en) | Ventilation hand-operated valve | |
| CN202360791U (en) | Novel arc cut-off and control valve | |
| CN210240582U (en) | Butterfly valve for preventing silt | |
| CN206723507U (en) | A kind of special fixing ball valve of the coal chemical industry of on-bne repair | |
| RU178151U1 (en) | REGULATING VALVE WITH INTEGRAL FILTER | |
| JPS57154505A (en) | Hydraulic system | |
| CN108916435A (en) | A kind of novel controllable type pressure valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190125 |