Double-Dump Valves:

• Function: Double-dump valves are utilised to discharge collected ash from hoppers or silos. They can handle both dry and wet ash materials.
• Design: These valves consist of two gates that operate alternately to prevent material flow blockages and ensure continuous discharge.

Slide Gate Valves:

• Function: Slide gate valves are used for on/off control of dry ash flow and can also be employed to isolate sections of the ash handling system.
• Design: They feature a flat gate that slides horizontally across the flow path, effectively controlling the ash flow.

Pneumatic Conveying Valves:

• Function: Pneumatic conveying valves are designed for use in ash conveying systems, where they control the flow of ash and ensure its proper transfer through pipelines.
• Design: These valves are often equipped with pneumatic actuators and seals suitable for handling abrasive materials. They can be used in both dilute-phase and dense-phase ash conveying systems

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Rotary Airlock Valves:

• Function: Rotary airlock valves are commonly employed in ash handling systems to maintain an airtight seal while allowing controlled discharge of ash into a conveying system or storage container.
• Design: They consist of a rotating rotor with vanes that continuously move ash through the valve while preventing backflow and maintaining system pressure.

Ash Isolation Valves:

• Function: Ash isolation valves are used to isolate different sections of the ash handling system, allowing for maintenance, repair, or system reconfiguration.
• Design: These valves can come in various types, including knife gate valves, ball valves, or butterfly valves, depending on the specific application and requirements.

Pressure Relief Valves:

• Function: Pressure relief valves are essential in ash handling systems to prevent overpressurization in storage vessels, hoppers, or pipelines.
• Design: These valves are designed to open when pressure exceeds a certain threshold, releasing excess pressure and preventing damage to equipment.

Proper selection, installation, and maintenance of ash handling valves are critical to ensure the efficient and safe operation of ash handling systems in power plants and industrial facilities. These valves must be capable of withstanding the abrasive nature of ash materials and perform reliably in harsh operating conditions. Consulting with experts in ash handling system design is recommended to choose the right valves for your specific application.