CN702 Low-noise Cage-guided Control Valve
The CN702 Low-noise Cage-guided Control Valve is mainly designed to reduce the noise of compressible fluids. To accommodate gas throttling, diffusion and expansion, many symmetrical small holes are provided on the sleeve to reduce pressure drop. It is widely used in self-control systems of industries such as petroleum, chemical engineering, metallurgy, power stations, air separation equipment, liquefied natural gas, etc. The fluid channel is in an S-flow pattern, and there is also a guide wing to improve the smooth flow of the fluid around the sleeve. Therefore, the regulating valve has low pressure drop loss, large flow rate, low noise and less cavitation corrosion.
CDN702 High Differential Pressure, Low-noise, High Stability Cage-guided Control Valve
The CDN702 High Differential Pressure, Low-noise, High Stability Cage-guided Control Valve is mainly designed to reduce the noise of compressible fluids and ensure the stability of the valve under high-pressure difference conditions. To accommodate gas throttling, diffusion and expansion, the sleeve is equipped with multiple pairs of symmetrical holes to reduce pressure drop. It is suitable for use in high-pressure difference process pipeline control conditions. The fluid channel is in the shape of an S-flow line, and it also has a guide wing to improve the balanced flow of the fluid around the sleeve and a dual-directional structure to ensure stability. The valve core adopts a force balance structure that achieves high-pressure difference control with a smaller operating output force in terms of structure.
The C700 Series Low-Noise Control Valve is divided into the CN702 and CDN702 series, mainly designed to reduce the noise of compressible fluids. To adapt to the throttling, diffusion and expansion of gases, the valve core adopts a pressure-balanced structure, and the sleeve is equipped with many symmetrical small holes to reduce pressure drop. The fluid passage is in an S-shaped streamline, and a deflector wing is also provided to improve the smooth flow of the fluid around the sleeve. Therefore, the control valve has low pressure drop loss, large flow rate, low noise and less cavitation corrosion. The control valve is equipped with the RSMF series multi-spring pneumatic diaphragm actuator, which has a simple and compact structure, stronger stability, large output force and long service life.
This series of regulating valves employ multi-stage valve cores and porous structures to gradually reduce the flow velocity of the fluid, disperse energy, and minimize turbulence and cavitation phenomena. As a result, the noise can be significantly reduced (typically by 20-40 dB). The flow characteristics are linear or equal percentage, ensuring good linearity of flow regulation and enabling precise control of the fluid. The pneumatic low-noise regulating valve not only guarantees the accuracy of process control but also effectively improves the working environment, meeting the dual demands of modern industry for environmental protection and efficient production.
Material: WCB、WCC、LCB、LCC、WC6、WC9、CF8、CF8M、CF3、CF3M、Ti....
Nominal Size: DN25~700 NPS 1”~28”
Pressure Rate: PN16、PN25、PN40、PN63、PN100、CL150、CL300、CL600
High Pressure：CL900 、CL1500 、CL2500
Temperature Range: Normal temperature type P: -17℃ to +230℃
High-temperature type EI: +230℃ to +525℃
Low-temperature type LE-I: -45℃ to -17℃ LE-II:-100℃~-45℃
LE-III:-196℃~-100℃
Operator: Pneumatic, electric, manual, pneumohydraulic linkage, electro-hydraulic linkage and other types.
Application range: Suitable for precise regulation and effective control of fluid flow, pressure, temperature or liquid level in pipeline systems of water supply, petrochemical, metallurgy, mining, light textile, energy, papermaking, food, steel and other industries.
RAYS manufactures high-quality fully welded ball valves, forged from premium materials with side-mounted balls. The valves are available in two designs: cylindrical and spherical fully welded bodies. RAYS is particularly known for its cylindrical valve bodies.
The working principle of the three eccentric butterfly valve is based on its unique structural design, which achieves sealing and flow control functions through three eccentric distances: Structural Design: Three Eccentric Structure: The valve stem axis deviates from the center of the butterfly plate and the body center, and the rotation axis of the valve seat is at an angle to the axis of the valve body channel. This design enables the butterfly plate to form a wedge-shaped space with the valve seat when closed, achieving sealing through friction. Conical Sealing Surface: The periphery of the butterfly plate is machined into an external inclined conical surface, and the valve seat is an internal inclined conical surface, forming an elliptical contact surface. When closed, the butterfly plate achieves sealing through the asymmetric pressing force in the up and down directions, and the sealing becomes tighter as the pressure increases. Working Mechanism: Open State: The butterfly plate is separated from the valve seat, and the fluid passes through the channel; due to the eccentric design, during the opening process, the butterfly plate gradually detaches from the valve seat, reducing friction and operating torque. Closed State: The butterfly plate rotates 90° to contact the valve seat, forming a wedge-shaped space and achieving sealing through torque. Flow Regulation: During the opening rotation of the butterfly plate, the valve's flow area gradually increases, reducing fluid resistance and improving the flow coefficient, achieving flow regulation. Technical Advantages: Sealing Performance: The metal-to-metal hard sealing method can still maintain good sealing performance in high-temperature and high-pressure environments; Low Friction Operation: The eccentric design significantly reduces the operating torque and extends the valve's lifespan; Self-Locking Function: When closed, the butterfly plate becomes tighter under pressure, preventing the phenomenon of over-positioning. This valve is widely used in the petroleum, chemical, and power industries, and common structural connection forms include double flange type, welding type, lug type, and socket type, etc.
The Power Plant Check Valve has small fluid resistance, the medium channel inside the valve body is straight through, and the flow direction of the medium does not change when it flows through the check valve. The pressure self-tightening seal is used, and the two ends of the valve are usually welded. The valve flap closes quickly, the water hammer pressure is small, the body structure is simple, the production process is good, the sealing performance is good, and the sealing surface is less eroded when fully opened. A wide range of applications.