Q11FI two-piece ball valve
I. Introduction:
The Q11F two-piece ball valve is a relatively new type of ball valve, featuring unique structural characteristics: friction-free operation, low wear on seals, and small opening/closing torque. This allows for a smaller actuator to be matched. When paired with a multi-turn electric actuator, it enables precise regulation and tight shut-off of the medium. It is widely used in demanding shut-off applications such as petroleum, chemical, and urban water supply and drainage systems. The working principle of the Q11F two-piece ball valve is to rotate the ball to open or block the valve. Ball valves are lightweight, compact, and can be manufactured with large diameters. They offer reliable sealing, simple structure, easy maintenance, and the sealing surfaces and spherical surface are usually in a closed state, making them less susceptible to erosion by the medium, thus being widely used in various industries. According to the position of the flow passage, Q11F two-piece ball valves are divided into straight-through, three-way, and right-angle types. The latter two types are used for distributing media and changing the flow direction of media.
II. Product Features:
1. Low fluid resistance, with a resistance coefficient equal to that of a pipe section of the same length.
2. Simple structure, small size, and light weight.
3. Tight and reliable sealing. Currently, plastic is widely used as the sealing surface material for ball valves, providing excellent sealing performance, and they are also widely used in vacuum systems.
4. Convenient operation and rapid opening/closing; only a 90° rotation is required from fully open to fully closed, facilitating remote control.
5. Easy maintenance. The ball valve has a simple structure, and the sealing rings are generally movable, making disassembly and replacement relatively convenient.
6. When fully open or fully closed, the sealing surfaces of the ball and valve seat are isolated from the medium, so the medium passing through will not cause erosion to the valve sealing surfaces.
7. Wide application range, with passage diameters ranging from several millimeters to several meters, and applicable from high vacuum to high pressure. When the ball rotates 90 degrees, the spherical surface is fully presented at the inlet and outlet, thereby cutting off the flow.
III. Structural Features:
1. Friction-free opening and closing. This function completely solves the problem of traditional valves where friction between sealing surfaces affects sealing performance.
2. Top-entry structure. Valves installed on pipelines can be directly inspected and maintained online, effectively reducing unit downtime and lowering costs.
3. Single valve seat design. Eliminates the problem of abnormal pressure rise in the valve cavity affecting operational safety.
4. Low-torque design. The specially designed valve stem only requires a small handwheel to easily open and close the valve.
5. Wedge-shaped sealing structure. The valve relies on the mechanical force provided by the valve stem to wedge the ball tightly against the valve seat for sealing, ensuring that the sealing performance is not affected by changes in pipeline pressure difference, and providing reliable sealing performance under various working conditions.
6. Self-cleaning structure of the sealing surface. When the ball tilts away from the valve seat, the fluid in the pipeline flows evenly along the ball's sealing surface at 360°, which not only eliminates local scouring of the valve seat by high-speed fluid but also washes away accumulated substances on the sealing surface, achieving the purpose of self-cleaning.
IV. Performance Parameters:
Model | Nominal Pressure PN (Mpa) | Test Pressure ps (Mpa) | Working Pressure p (Mpa) | Working Temperature (℃) | Applicable Medium | ||
Shell | Seal (Liquid) | Seal (Gas) | |||||
Q11F-16 Q11F-16C | 1.6 | 2.4 | 1.76 | 0.6 | 1.6 | 150 | Water, steam, oil products |
Q11F-16P | Nitric acid | ||||||
Q11F-16R | Acetic acid | ||||||
Q11F-16Ni | Alkali liquid, brine, seawater, etc. | ||||||
Q11F-16Q | Water, steam, oil products | ||||||
Q11F-40 | 4.0 | 6.0 | 4.4 | 0.6 | 4.0 | Water, steam, oil products | |
Q11F-40P | Nitric acid | ||||||
Q11F-40R | Acetic acid | ||||||
| Machinery & Equipment/Valves/Ball Valves | |
