Rotolok 20BSS Rotary valve

• Used for controlled discharge of dry bulk materials from hoppers, silos, and cyclones.
• Commonly employed in pneumatic conveying systems to introduce material into a pressure or vacuum line.
• Suitable for metering ingredients in batching and continuous processing operations.
• Often found in dust collection systems to discharge collected dust while maintaining an air seal.

Typical throughput

For this class of equipment, throughput can vary significantly based on rotor speed, material density, and pocket volume, typically ranging from a few litres to several cubic metres per hour.

Material of construction

The 'BSS' in the model name suggests stainless steel construction, which is common for applications requiring corrosion resistance or hygiene, such as food or pharmaceutical processing.

Rotor type

Rotolok rotary valves are commonly available with various rotor types, including open-ended, closed-end, and adjustable tip rotors, depending on the material and application.

Sealing mechanism

Units of this type typically feature robust sealing arrangements to minimise air leakage and material bypass, crucial for efficient conveying and dust control.

Power supply

Commonly found on units of this type, power requirements typically involve a geared motor, often 3-phase, with voltage specific to the installation region (e.g., 400V, 50Hz in the UK).

Maintenance requirements

Units of this type require routine inspection of rotor tips, bearings, and seals. The inclusion of a spare stainless roto shaft suggests a proactive approach to maintenance and wear part replacement.

• What is the primary function of a rotary valve?

  A rotary valve, also known as a rotary airlock, is primarily used to discharge bulk solid materials from hoppers or silos under gravity, while maintaining an airtight seal between two areas of differing pressure.

• What does '20BSS' signify in the model name?

• Is this unit suitable for food-grade applications?

• What kind of materials can this rotary valve handle?

• What is the benefit of having a spare stainless roto shaft?

Hoppers and feeders are regarded as reliable workhorses in food processing operations. Buyers typically value models offering consistent material flow, easy cleaning access, and durable construction. When purchasing used equipment, inspecting for corrosion, wear on internal surfaces, and proper sealing mechanisms is essential. Industry sentiment favours units with adjustable feed rates and compatibility with existing production lines. Stainless steel construction and straightforward maintenance requirements are commonly cited strengths, making these systems practical long-term investments for processing facilities.

General overview for this equipment type