Cast steel flange ball valve Q41F
I. Introduction:
The closing part of the cast steel flange ball valve is a sphere, which rotates around the center line of the valve body to achieve opening and closing. Ball valves are mainly used in pipelines to cut off, distribute, and change the flow direction of the medium. Floating ball valves adopt a specially designed double-inclined elastic sealing ring, which effectively reduces the friction between the sphere and the sealing ring and reduces the operating torque. When the medium pressure is low, the contact area between the sealing ring and the sphere is small, so there is a large sealing specific pressure to ensure reliable sealing. When the medium pressure is high, the contact area between the sealing ring and the sphere also increases correspondingly. Therefore, the sealing ring can withstand a large medium thrust without damage, ensuring reliable sealing. The valve seat structure with elasticity and automatic compensation function is adopted, making opening and closing easy even at high temperatures. The sphere and valve seat undergo special hardening treatment, ensuring reliable sealing, high temperature resistance, wear resistance, corrosion resistance, and long service life. The sphere and valve seat have good shearing and self-cleaning functions, making them suitable for controlling media containing particles and fibers. They are widely used in industries such as petroleum, chemical, pharmaceutical, food, light industry, and electric power, and are suitable for controlling high-temperature fluid media or fluids with particles and fibers, especially for boilers, coal injection, and scaling/frozen transmission pipelines in power stations and metallurgical industries.
II. Performance Features:
① Fire-resistant structure: According to user requirements, the ball valve can be designed with a fire-resistant structure. In case of a fire that burns the sealing ring, all sealing parts of the ball valve can form a metal-to-metal hard sealing structure, effectively preventing medium diffusion and stopping the fire from spreading;
② Anti-static structure: According to user requirements, the ball valve can be designed with an anti-static structure, that is, a conductive spring is installed between the sphere and the valve stem, so that static electricity generated during the opening process of the valve can be conducted into the ground through the set static electricity channel, achieving the purpose of eliminating static electricity, avoiding static ignition that may ignite the medium, and ensuring system safety.
III. Actuator:
Adopts a new series of GT-type pneumatic actuators, available in double-acting and single-acting (spring return) types, with rack and pinion transmission, safe and reliable; for large-diameter valves, the series AW-type pneumatic actuators use fork-type transmission, with a reasonable structure and large output torque, available in double-acting and single-acting types.
1. Gear-type double piston, large output torque and small volume.
2. The cylinder is made of aluminum alloy, light in weight and beautiful in appearance.
3. Manual operating mechanisms can be installed at the top and bottom.
4. The rack-type connection can adjust the opening angle and rated flow.
5. The actuator can be equipped with electrical signal feedback indicators and various accessories to realize automated operation.
6. The IS05211 standard connection facilitates the installation and replacement of the product.
7. The adjusting screws at both ends allow the standard product to have an adjustable range of ±4° at 0° and 90°, ensuring synchronization accuracy with the valve.
| Machinery & Equipment/Valves/Ball Valves | |
