CN8 series eccentric rotating valve is a valve core is on the surface of the spherical cap eccentric Angle of schedule control valve, the one-piece, straight type runner body structure, the rotary center of the valve core is not concentric with the axis of rotation, can reduce the seat wear and prolong service life. It has excellent stability, resistance to erosion and corrosion resistant, reliable seal and the advantages of large flow adjustable range. In addition, the series of control valve compact structure, output torque, action quick, steady, long service life and can be widely used in petroleum, chemical industry, coal chemical industry, electric power, metallurgy and other industrial control area and heavy load.
Product Description
An eccentric rotary plug valve is a type of industrial valve that is designed to regulate and control the flow of fluid or gas in pipelines. It is a quarter-turn valve that uses a plug-shaped disc with an eccentric or offset stem to control the flow of the media through the valve.
The eccentric rotary plug valve has a unique design that enables it to provide accurate and precise control of fluid or gas flow. The valve has a cylindrical body with a horizontal or vertical axis and a spherical plug that is located in the center of the body. The plug is mounted on an eccentric stem, which means that it is not located at the center of the valve body.
The eccentric rotary plug valve operates by rotating the plug inside the valve body to control the flow of the media through the valve. When the plug is rotated, it moves away from or towards the valve seat, which is the sealing surface located on the valve body. This movement creates a variable orifice that regulates the flow of fluid or gas through the valve.
One of the advantages of the eccentric rotary plug valve is its ability to handle high-pressure and high-temperature applications. The valve is also suitable for handling viscous and abrasive fluids or gases. The eccentric design of the valve ensures that the plug only makes contact with the valve seat during the closing and opening phases of the valve operation, reducing wear and tear on the valve components.
Tight shutoff: Eccentric rotary plug valves are designed to provide a tight shutoff, which means that they can effectively prevent leakage of fluid from the pipeline.
Low operating torque: The offset plug design of the valve reduces the operating torque required to open and close the valve.
Self-cleaning action: The eccentric plug design provides a self-cleaning action that helps prevent the buildup of debris on the valve seat.
Low maintenance: Eccentric rotary plug valves require very little maintenance due to their simple design and self-cleaning action.
Oil and gas pipelines: These valves are commonly used in pipelines that transport crude oil, refined petroleum products, natural gas, and other hydrocarbons.
Chemical processing: Eccentric rotary plug valves are often used in chemical processing plants to control the flow of chemicals and other fluids.
Power generation: These valves are used in power plants to control the flow of water and steam in boilers and other equipment.
Water treatment: Eccentric rotary plug valves are used in water treatment plants to control the flow of water and other fluids.
One-piece, straight-through flow channel valve body structure, strong flow capacity, large adjustable ratio, simple flow channel, strong anti-blocking ability.
Extended seat design, the inlet flow path is fully protected from scouring and improves the service life of the valve.
Split spool design, the spool is a regular body, no need to cast, can choose any corrosion and scouring resistant materials, improve the valve's anti-scouring performance.
One-piece stem design, good stem rigidity, stable and reliable guiding and positioning, which is conducive to the sealing and regulating function of the spool.
Anti-fly-out design of the stem shoulder, safe and reliable.
Easy installation and disassembly, easy maintenance.
Seat leakage: hard seal eccentric rotary control valve meets ANSI B16.104 level IV; soft seal eccentric rotary control valve meets ANSI B16.104 level VI.
Extended seat design
Simple seat structure,easy machining,different materials optional
The inlet flow path is fully protected from erosion,enhance service life
Split modular trim design
The symmetrical shape plug no need casting,simple structure easy machining to ensure excellent sealing precision
Corrosion and erosion resistant materials optional to enhance erosion resistance
Only need replace the plug quick main-tenance with low cost
Integrated and thick stem
Rigid stem runs stable and reliable.
Stem is fully insulated from fluid, no gap to hold any dirt.
Easyinstallation and disassembly, easy maintenance.
Anti blow-out design, safe and reliable
Valve structure highlights
Forged body + lining ceramic tube (WC)
Integral tungsten carbide ceramics for seat and plug .
Easy installation and disassembly, easy maintenance.
Integral hardening treatment guided bushing, with anti - particle stem seals.
TECHNICAL PARAMETERS
| Nominal Size | DN25~DN300 |
| Pressure Rating | PN16/25/40/63/100;CL150(PN20)/300(PN50)/600(PN110) |
| Operateing Temperature | -46℃~450℃ |
| Characteristics | Approximate linear |
| Rangeability | 100:1 |
| Seat Leakage Class | ANSI B16.104: IV、V、VI |
| Body Material | WCB/WCC/LCB/LCC;WC6/WC9;CF8/CF8M;4A/5A etc. |
| Trim Material | Metal：304+SN/304+SN；304+ST/304+ST；Soft：304+HCr/RTFE |
| Seal Material | PTFE+ graphite v-shaped packing, flexible graphite ring packing, graphite +PTFE braided packing etc. |
Nominal diameter: DN25/40/50/80/100/150/200/250/300
Pressure class: ANSI CL150/300; DIN PN16/25/40
Valve body and upper bonnet material: WCB, CF8, CF8M, etc.
Upper bonnet form: integral structure with valve body (-45℃～＋400℃)
Packing type: PTFE + graphite V-shaped packing; flexible graphite ring packing; etc.
Flow characteristics: nearly linear
Adjustable ratio: 100:1
Allowable leakage: metal seal: ANSI B16.104 Class Ⅳ; soft seal: ANSI B16.104 Class Ⅵ
Headquarter Add.: SUPCON Park, No.309 Liuhe Road, Binjiang District, Hangzhou, 310053, China.
Tel.: +86 571 8111 9774
Fax: +86 571 8111 9737
E-mail: [email protected]
