Liquid Cooling Butterfly Valve Structure And Principle
water cooling Butterfly Valve
This cooling water Butterfly Valve features a sophisticated design and is particularly suitable for regulating or switching the flow and pressure of various types of water, industrial water, sewage, air, HVAC, city gas, and liquefied petroleum gas. When closed, the Butterfly Valve cooling system exhibits zero leakage.
1. The water cooling Butterfly Valve seat utilizes a patented COS curve seal, which reduces friction between the Butterfly Valve cooling disc and the seat, lowering actuator torque and extending the life of the seat ring. The sealing process is equivalent to that of a cooling Butterfly Valve.
2. The disc sealing surface of this Butterfly Valve data center is spherical, resulting in a very smooth seal, especially at the axial seal point. This significantly extends the life of the seat ring.
3. A metal insert within the seat ring automatically closes the gap between the valve stem and the seat ring when the valve stem tilts due to unbalanced forces, eliminating the possibility of axial leakage. COS Curve
The COS curve sealing structure eliminates torque buildup before the valve disc seals. When sealed, the valve disc and seat ring maintain contact over a 360-degree circumference, reducing friction and torque, extending the life of the seat ring and ensuring the butterfly valve maintains zero leakage for extended periods.
The reduced friction and torque also allow the use of a lower-power actuator, reducing user costs.
Spherically Machined Valve Disc
The valve disc is machined to a complete sphere, with every part of the sealing surface forming a portion of the sphere.
The valve disc and valve ring are machined from the same spherical surface, resulting in a minimal gap and frictionless rotation. This ensures smooth valve disc rotation, even at the axial sealing surfaces at the upper and lower tips of the disc. This smooth sealing surface, despite contact during sealing, reduces torque and improves sealing performance. High-Performance Teflon-Lined Butterfly Valve
This high-performance Teflon-lined butterfly valve features a fully Teflon-lined interior. It is widely used for regulating or switching the flow and pressure of various fluids in the food, biopharmaceutical, and electronics industries, where hygiene is crucial, as well as for controlling strong acids, alkalis, and highly corrosive gases in the chemical industry. It boasts exceptional durability, excellent sealing performance, and superior corrosion resistance, achieving zero leakage when closed. The valve has a maximum diameter of 600mm, a working pressure of 10 kgf/cm², and a maximum operating temperature of 200°C.
Fully Teflon-Lined Valve Disc and Seat
All fluid-contacting parts of the valve, including the upper and lower ends of the stem, are lined with Teflon to prevent fluid leakage along the stem.
Separate Seal Design
The sealing ring design utilizes separate rubber and Teflon components, yet they complement each other to enhance sealing performance.
The use of rubber imparts elasticity to the seal, reduces rubber usage, and eliminates the possibility of the valve disc becoming stuck in the closed position due to rubber expansion caused by temperature rise. The new structural design improves sealing performance.
1. PFA with a thickness of 3mm or more effectively prevents the permeation of various gases and offers excellent corrosion resistance.
2. A powerful spring is added to each of the upper and lower stuffing boxes to mitigate the effects of temperature fluctuations on the seal.
Double-Eccentric Sealed Butterfly Valve
Double-eccentric butterfly valves, also known as high-performance butterfly valves, are primarily used for drainage systems in water plants, power plants, steel mills, chemical plants, water source projects, and environmental infrastructure construction. They are particularly well-suited for use as regulating and shutoff devices in water pipelines. Compared to centerline butterfly valves, double-eccentric butterfly valves offer greater high-pressure resistance, a longer lifespan, and improved stability. Compared to other valves, larger diameters result in lighter materials and lower costs. However, due to the high flow resistance caused by the central disc, butterfly valves are not very effective for sizes smaller than DN200.
The double-eccentric design
effectively reduces valve seat wear, ensuring secure sealing and long-term operation. Tests have shown that the valve maintains zero leakage after 700,000 cycles. The double-eccentric butterfly valve is a further improvement on the single-eccentric butterfly valve. Its structural feature is that the valve stem axis is offset from both the disc and body centers. This double eccentricity allows the disc to quickly separate from the valve seat when the valve is opened, significantly eliminating unnecessary excessive squeezing and scraping between the disc and seat, reducing opening resistance, reducing wear, and extending valve seat life. This significant reduction in scraping also allows the double-eccentric butterfly valve to utilize metal seats, enhancing its application in high-temperature applications.
1. A rational design, compact structure, and easy assembly and disassembly facilitate maintenance.
2. The eccentric structure reduces friction on the sealing ring and extends valve life.
3. Complete sealing with zero leakage. Suitable for ultra-high vacuum applications.
4. The materials of the disc seal, disc, and shaft can be interchanged, allowing for compatibility with a variety of media and temperatures.
Triple-eccentric hard-seal butterfly valve
A triple-eccentric butterfly valve is one in which the valve stem axis is offset from both the disc and body centers, and the seat rotation axis is at an angle to the valve body passage axis.
