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Vanne de porte de couteau

La vanne de porte de couteau est également appelée vanne de type couteau, vanne de porte de couteau, vanne de boue, sa partie d’ouverture et de fermeture est la vanne, la direction du mouvement de la vanne est perpendiculaire à la direction du fluide, en utilisant la vanne en forme de lame qui peut couper le matériau fibreux pour couper le milieu, La vanne a deux faces d’étanchéité. Les deux faces d’étanchéité des vannes de mode les plus couramment utilisées forment un coin. L’angle de coin varie avec les paramètres de la vanne, généralement 5°. La vanne de la vanne à couteau à coin peut être faite en une seule pièce, appelée vanne rigide; Il est également possible de faire des barrières qui peuvent produire des traces de déformation pour améliorer leur technique et compenser les déviations générées par l’angle de surface d’étanchéité pendant le traitement. Ces barrières sont appelées barrières élastiques. Il n’y a pratiquement pas de chambre dans le corps de la vanne. La vanne est montée et descendue dans la fente de guidage latérale et est serrée contre le siège par l’oreille inférieure. Pour obtenir une étanchéité moyenne élevée, vous pouvez choisir le siège de joint torique pour obtenir un joint bidirectionnel. La vanne de porte de couteau a un plus petit espace d’installation, une pression de travail faible, pas facile à accumuler des débris, le prix est inférieur.

Valve papillon

Butterfly valve is also called flap valve, is a simple structure of the regulating valve, can be used for low-pressure pipeline medium switch control butterfly valve refers to the closing parts (disc or butterfly plate) for the disc, revolving around the valve shaft to open and close a valve.
Valves can be used to control the flow of air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media and other types of fluids.
 It mainly plays a cutting and throttling role in the pipeline. Butterfly valve opening and closing part is a disc disc, in the valve body around its own axis rotation, so as to achieve the purpose of opening and closing or regulating.

Valve à bille

Ball valve, the opening and closing parts (ball) driven by the valve stem, and around the ball valve axis for rotary movement of the valve. 
It can also be used for fluid regulation and control, among which the hard sealing V-ball valve has a strong shear force between the V-type ball core and the metal valve seat of hardfacing hard alloy, especially suitable for the medium containing fiber, small solid material, etc. 
The multi-pass ball valve in the pipeline can not only flexibly control the media confluence, diversion, and flow direction switch, but also can close any channel and make the other two channels connected. 
This type of valve in the pipeline should generally be installed horizontally. Ball valve is divided into pneumatic ball valve, electric ball valve, manual ball valve according to the driving mode.

Valve à bille

Ball valve, the opening and closing parts (ball) driven by the valve stem, and around the ball valve axis for rotary movement of the valve. 
It can also be used for fluid regulation and control, among which the hard sealing V-ball valve has a strong shear force between the V-type ball core and the metal valve seat of hardfacing hard alloy, especially suitable for the medium containing fiber, small solid material, etc. 
The multi-pass ball valve in the pipeline can not only flexibly control the media confluence, diversion, and flow direction switch, but also can close any channel and make the other two channels connected. 
This type of valve in the pipeline should generally be installed horizontally. Ball valve is divided into pneumatic ball valve, electric ball valve, manual ball valve according to the driving mode.

Vanne de porte

Gate valve is an open and close part of the gate plate, the movement direction of the gate plate is perpendicular to the direction of the fluid, the gate valve can only be fully open and closed, can not be adjusted and throttled. 
Gate valves are sealed by the contact between the seat and the gate. Usually the sealing face is surfacing metal material to increase wear resistance, such as surfacing 1Cr13, STL6, stainless steel, etc. 
There are rigid gate and elastic gate. 
According to the different gate, gate valves are divided into rigid gate valves and elastic gate valves.

Clapet de contrôle

Return valve refers to the opening and closing parts of the circular disc and by its own weight and media pressure to produce action to block the media backflow of a valve. 
Automatic valve class, also known as check valve, one-way valve, backflow valve or isolation valve. 
Disc motion is divided into lifting and swing. Lift check valves are similar in construction to globe valves except for the stem that drives the disc. 
The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). 
Valve is opened when inlet pressure is greater than the sum of disc weight and flow resistance. 
On the contrary, the valve is closed when the medium flows back. 
Swing check valves have a disc that is tilted and rotates on its axis and work in a similar way to lift check valves. 
Check valves are often used as bottom valves in pumping units to prevent the backflow of water. 
Check valves are combined with globe valves to provide safety isolation. Disadvantages are large resistance, poor sealing when closing.

Clapet de contrôle

Return valve refers to the opening and closing parts of the circular disc and by its own weight and media pressure to produce action to block the media backflow of a valve. 
Automatic valve class, also known as check valve, one-way valve, backflow valve or isolation valve. 
Disc motion is divided into lifting and swing. Lift check valves are similar in construction to globe valves except for the stem that drives the disc. 
The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). 
Valve is opened when inlet pressure is greater than the sum of disc weight and flow resistance. 
On the contrary, the valve is closed when the medium flows back. 
Swing check valves have a disc that is tilted and rotates on its axis and work in a similar way to lift check valves. 
Check valves are often used as bottom valves in pumping units to prevent the backflow of water. 
Check valves are combined with globe valves to provide safety isolation. Disadvantages are large resistance, poor sealing when closing.

Joint de dilatation en caoutchouc

Expansion Joints are also called compensators or Expansion Joints. 
It is composed of bellows (a kind of elastic element) and end pipe, bracket, flange, conduit and other accessories. 
Expansion joint is a flexible structure set on the container shell or pipe to compensate for the additional stress caused by temperature difference and mechanical vibration. 
The effective expansion deformation of the bellows of the main body of the work is used to absorb the size changes of pipelines, conduits and containers caused by thermal expansion and cold contraction, or to compensate the axial, transverse and angular displacement of pipelines, conduits and containers.
Expansion joint material is divided into fabric, metal, rubber and so on.

Parties de soupapes

Flange, also known as Flange Flange plate or Flange. Flange is the shaft and shaft connected parts, used for the connection between the pipe end; Also useful in equipment inlet and outlet flange, used for the connection between two equipment, such as reducer flange. Flange connection or flange joint refers to a detachable connection made of flange, gasket and bolt which are connected to each other as a group of assembled sealing structures. Pipeline flanges refer to the flanges for piping in pipeline devices and the import and export flanges of equipment when used in equipment. There are holes in the flange and bolts hold the two flanges together. Gasket seals between flanges. Flange threaded connection (threaded connection) flanges, welding flanges and clip flanges. Flanges are used in pairs, threaded flanges can be used for low pressure pipes, welded flanges are used for pressures above 4 kg. Put a gasket between the two flannels and bolt them down. Flanges at different pressures have different thicknesses, and they use different bolts. Pumps and valves, when connected to pipes, are also made into the corresponding flange shape, also known as flange connection. All in the two planes around the use of bolt connection at the same time closed connection parts, generally known as "flange", such as ventilation pipe connection, this kind of parts can be called "flange parts". But this connection is only a part of the equipment, such as flange and water pump connection, it is not good to call the pump "flange parts". Smaller ones, such as valves, can be called "flange parts".