● A single elastic valve seat sealing structure achieves dynamic sealing through system pressure, and is durable;
● It can maintain reliable sealing without the need to use additional sealing rings or metal components;
● It can operate a bidirectional leak-free seal;
● The lip-edge sealing design compensates for temperature and pressure changes during use;
● The double eccentric structure ensures no contact between the valve seat and the disc during opening and closing, eliminating wear at both the upper and lower ends of the valve seat during frequent opening, reducing the operating torque, and lowering the requirements for the operating machinery.
● There is a fly prevention step at the top of the shaft, which prevents the upper part of the shaft from moving out of the valve cover in case of an accident.
● Maintenance is convenient. Just remove the pressure plate to replace the valve seat, without the need to disassemble the disc and the shaft.
● It combines flow interruption and control, featuring excellent control characteristics; the flow characteristic curve is in a geometric ratio change; the adjustment range is wide; even when used for control, it can still achieve a tight seal;
Material: Carbon Steel, Stainless Steel, Alloy Steel Nominal Size: NPS 2"~64", DN 50~1600
Pressure Rate: Class 150~600, PN 10~100
Temperature Range: -46°C~+200°C
Operator: Manual, Pneumatic, Electric, etc..
Application range: Suitable for water supply and drainage and gas pipelines in food, medicine, chemical industry, petroleum, electric power, light textile, paper making, etc. to adjust the flow and intercept the medium.
◎ Design Standard: ASME B16.34、API 609、EN 593、
◎ Pressure Temperature Rate: ASME B16.34、EN12516-1、
◎ Face to Face: API 609、ISO 5752、EN558
◎ Flange Standard: ASME B16.5、ASME B16.47、EN 1092、GOST 33259、GB/T 9124
◎ Pressure Test: API 598、ISO 5208、EN 12266-1、GOST 9544
An energy-saving control valve without external energy supply, used for non-corrosive liquids and gases with a temperature of ≤ 200℃ for differential pressure control devices. The valve opens or closes when the differential pressure increases.
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.
RAYS Three-Way and Multi-Port Ball Valve are important components in fluid control systems and are widely used in various industrial fields. They are variants of ball valves. Their design allows fluids to be distributed or converted between more than two pipes. The three-way ball valve has three interfaces, which can realize the diversion, confluence or switching of fluids. According to the different internal structures, it is divided into L-type and T-type. The L-type can only connect two mutually orthogonal pipes, and cannot simultaneously maintain the interconnection of the third pipe, and only plays a distribution role; the T-type can make three orthogonal pipes interconnected and cut off the third channel, playing a diversion and confluence role. The multi-way ball valve is an extension of the three-way ball valve, with more interfaces and more complex fluid control functions.