Special Pneumatic Pulverized Coal Injection and Ash Unloading Ball Valve

Q647H pneumatic ball valve is specifically designed for coal powder and ash unloading in various industrial systems, including oil, natural gas, coal, and mineral extraction, refining, and pipeline networks. It is also widely used in chemical production, pharmaceuticals, food processing, power generation (hydro, thermal, and nuclear), municipal water supply and drainage, heating, and gas distribution systems. This valve is suitable for agricultural irrigation, metallurgical production, infrastructure, defense, and daily life applications. As a critical mechanical component, it ensures the controlled flow of media through pipelines by either cutting off or connecting the flow, enabling accurate delivery of materials to designated locations. Material and Properties of Key Components

Key Features

1. The manual handle can be made from steel plate or stainless steel casting. It includes a limiting structure that marks the open and closed positions. A lock hole is available on the limit block for key assemblies, preventing accidental operation with clear on/off indicators on the handle. 2. The stem is forged from A182F (1Cr13) material with heat treatment, achieving a hardness of HB220–250. It connects to the handle via flat key, spline, or square, ensuring easy disassembly and strong versatility. The stem is also equipped with a blowout-proof design. 3. The valve uses flexible graphite sealing rings or PTFE graphene seals, allowing reliable sealing under lubricated conditions. 4. Static prevention structures can be added between the ball and stem, as well as the stem and body, using conductive springs to avoid static ignition in flammable environments. 5. Sealing options include soft, hard, or fireproof seats. DN150 uses a floating ball design, while DN200 uses a fixed ball design. 6. An auxiliary sealing mechanism with a grease injection valve is available, enabling temporary sealing during emergencies and extending the stem for underground installations. Important Dimensions and Weights for PN 0.25–1.6MPa

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