The Lifting Plug Valve reduces the operating torque through hydraulic balancing technology and is equipped with hardened metal sealing surfaces, capable of withstanding temperatures up to 425℃. The unique lifting mechanism effectively prevents wear on the sealing surface during the opening and closing process. It features a fire safety design and complies with API 607 standards. The integral forged valve body structure allows for a pressure rating up to Class 2500. It is suitable for high-performance applications such as catalyst transportation and coal chemical industries involving solid particle media.
Main material: Carbon Steel, Stainless Steel, Alloy Steel, Etc
Size range: DN25～DN900,NPS1～NPS36
Pressure level: PN10～PN420,CLass150～CLass2500
Temperature range: -46～550℃
Operator: Manual, Pneumatic, Electric, etc..
Application scenarios: Mainly used in industries such as petroleum, chemical, pharmaceutical, fertilizer, and electricity.
◎ Design Standard: API 599,GB/T 22130,API 6D
◎ Pressure Temperature Rate: ASME B16.34,GB/T 12224
◎ Face to Face: ASME B16.10,GB/T 12221
◎ Flange Standard: ASME B16.34,ASME B16.47,GB/T9113
◎ Butt Weld Standard: ASME B16.25,GB/T12224
◎ Fire Safe: API 607/API 6Fa
◎ Pressure Test: API 598,GB/T13927
RAYS cast steel check valves are designed and manufactured to provide maximum service life and dependability. All check valves meet the design requirements of American Petroleum Institute standard API600 & 6D.BS EN 13709 and generally conform to American Society of Mechanical Engineers standard ASME B16.34. Valves are available in a complete range of body/cover materials and trims.
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 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.