DYQ340F/H Mounted Turbine Eccentric Half Ball Valve

When the DYQ340F/H upper mounted turbine eccentric half ball valve malfunctions in the pipeline and needs to be repaired, there is no need to disassemble the valve from the pipeline. Simply remove the middle flange bolt and nut, remove the valve cover and valve stem assembly from the valve body, and then remove the ball and valve seat assembly. You can repair the ball and valve seat online. This type of maintenance saves time and minimizes losses in production. By utilizing an eccentric valve body, eccentric ball, and valve seat, the valve stem automatically centers on a common trajectory during rotational motion. The closer it is closed, the tighter it becomes, achieving excellent sealing performance. The ball and valve seat of the valve are completely detached, eliminating the wear of the sealing ring and overcoming the problem of constant wear between the traditional ball valve seat and the sealing surface of the ball. Non metallic elastic materials are embedded in the metal seat, and the metal surface of the valve seat is well protected. This product is particularly suitable for media such as steel, aluminum, fibers, small solid particles, pulp, coal ash, petroleum gas etc.

Application scope:
The best equipment for coal powder injection, control gas, particle containing fluid, and powder solid medium transportation, applied to coal powder injection special valves in metallurgical and mineral processing production.

Product features:

1. Solved the problems of slurry, mixed flow liquid, dust and other media in industrial production, such as sedimentation, easy scaling, and blockage in pipeline transportation, which make valves not tightly closed.
2. The switch is lightweight, and when opened, the ball separates from the shell without any contact. The starting torque is small and the rotation is flexible. When closed, the squeezing and cutting effect between the hemisphere and the valve seat can remove dirt on the sealing surface, making the valve open and close smoothly, with a high safety factor and good sealing performance.
3. The eccentric structure of the sealing surface enables the spherical surface to automatically compensate for wear and maintain the sealing of the valve, resulting in a long service life.
4. The T-shaped valve belongs to the wear-resistant hard sealed ball valve, and its sealing material is special. The sealing surface needs to undergo special wear-resistant treatment. After treatment, the surface reaches HRC65-72 degrees, so the wear resistance of the valve is particularly good.
5. The surface paint of the valve is available in two types: room temperature and high temperature. Imported paint with a high temperature resistance of 600 ℃ is used for high temperature. After spraying, there is no burning, carbonization or coking phenomenon during high temperature use. No color change.

Execution standards:
Design and manufacturing: GB/T12237-2007
Structural length: GB12221-2005
Supply requirements: GB/T12252-2005
Pressure test: GB/T13927-2008
Pressure testing and inspection: GB/T13927-1992

Product performance parameter:

Product external structure connection size:

Installation precautions for ball valves:

1. During installation and construction, care must be taken to avoid hitting the valve.
2. Before installation, the ball valve should be inspected to verify its specifications and model, and to identify any damage, especially for the valve stem. Rotate it a few more times to see if it is skewed, as the valve stem is most likely to be knocked off during transportation. Also, remove any debris inside the valve.
3. When lifting a ball valve, the rope should not be tied to the handwheel or valve stem to avoid damaging these components. It should be tied to the valve body.
4. The pipeline connected to the ball valve must be cleaned thoroughly. Compressed air can be used to blow away iron oxide shavings, mud and sand, welding slag, and other debris. These debris not only easily scratch the sealing surface of the ball valve, but also block the small valve with large particles (such as welding slag), causing it to fail.
5. Leave a position for the valve handle to rotate during installation.
6. Ball valves cannot be used for throttling.
7. Ball valves with transmission mechanisms should be installed upright.