Rotary Airlock Valve Sizing Guide

Correct rotary airlock valve sizing depends on the material and process conditions. A valve that is too small may not reach the required capacity, while a valve that is too large may feed unevenly or create installation problems.

This guide explains what information buyers should prepare before asking for rotary airlock valve selection support.

1. Material name

Different materials flow differently. Powder, granules, pellets, flakes and abrasive materials may require different rotor and housing considerations.

2. Bulk density

Bulk density is important for estimating feeding volume and capacity. If the exact value is not available, provide the best available process data or a material sample description.

3. Required capacity

Capacity may be described by weight per hour or volume per hour. Please specify the unit clearly.

• kg/h
• t/h
• m³/h

4. Particle size and flow behavior

Particle size, moisture, stickiness and bridging tendency can affect discharge stability. Oversized particles or sticky materials may require special attention during selection.

5. Temperature

Operating temperature affects material selection, clearance and sealing method. Provide the normal operating temperature and any possible peak temperature.

6. Pressure difference

For pneumatic conveying systems, pressure difference is important for airlock performance. Provide the pressure above and below the valve if available.

7. Installation and flange dimensions

Provide inlet and outlet size, flange standard, installation space and drive position requirement when possible.

Related guides

rotary valve selection parameters | rotary valve capacity calculation | rotary airlock valve dimensions chart | rotary feeder selection guide