Eccentric Half Ball Valve with Top Inlet

1. Design and design features
● Eccentric structure: The ball has an eccentric design (usually single or double eccentric). When closed, the ball deviates from the center line of the valve seat, which reduces friction, ensures easy opening and closing, and zero seal wear.

● Top Mount Design: The valve cover can be removed from the top of the valve body, which is convenient for inspection or replacement of internal components (such as ball, valve seat and valve stem). Especially suitable for working environments with limited space or frequent maintenance.

● Metal solid seal: The valve seat and ball are mainly made of metal materials (such as stainless steel and cemented carbide), which are resistant to high temperature and high pressure, and are suitable for corrosive environments (such as particles and corrosive liquids).

● Bi-directional sealing: Some designs support bi-directional loading, and the sealing efficiency is not affected by the direction of fluid flow.

2. Principle of operation
● Open state: The ball rotates 90° to be parallel to the flow channel, and the medium has no obstructions.

● Closed state: The ball rotates back to its original position, and the eccentric design is used to press the valve seat to form a seal. Eccentric design reduces opening and closing torque and prolongs service life.

3. Main advantages
● Easy maintenance: The top-mounted structure avoids disassembling the pipeline and saves downtime.

● Wear resistance and durability: Metal seals are suitable for abrasive media such as particles and slurries.

● Low Torque Operation: The eccentric design reduces the resistance to opening and closing and can be equipped with pneumatic and electric actuators.

● Applicable to high pressure and high temperature: some models can reach PN100 or above, and the temperature resistance exceeds 500°C.

4. Typical Applications
● Harsh working conditions: high dust and corrosive environments in the electric power, metallurgy, chemical and petroleum industries.

● Granular medium: coal powder, sludge, ash and other easy-wear piping systems.

● Scenarios that require frequent maintenance: for example, coal injection into blast furnaces in steel mills and ash removal systems in power plants.