Rotary Airlock Valve
Airtight, Non-Stop Material Discharge for Rice Mills & Pneumatic Conveying
Rotary Airlock Valve for Continuous, Sealed Discharge
A rotary airlock valve (also called a rotary feeder or rotary valve) is a rotor-and-housing device fitted beneath cyclones, silos, hoppers or bag filters to discharge grain, bran, husk, flour and other bulk material continuously while sealing the air gap between two zones of a system.
Agromach builds its rotary airlock valves with a precision-machined rotor, close body-to-rotor clearances and durable housing construction so the seal stays tight and discharge stays consistent even under continuous rice-mill duty.
- Maintains air seal between hoppers/cyclones and conveying line
- Precision rotor and close clearances minimize leakage
- Rugged housing for abrasive grain, husk, and bran handling
- Low-maintenance design for continuous operating hours
Why Poor Air-Sealing at the Discharge Point Hurts a Rice Mill
When the valve under a cyclone, silo or hopper doesn't hold a proper air seal, the whole system suffers:
- Air leakage reduces conveying air velocity and pressure downstream
- Pressure loss forces fans and blowers to work harder, wasting energy
- Inconsistent or blocked discharge causes material back-up
- Dust escapes into the work area through a poorly sealed valve
- Frequent wear or clearance loss accelerates leakage over time
Left unaddressed, these issues quietly raise energy costs, slow production, and shorten equipment life.
Agromach's Rotary Airlock Valve — Built to Hold the Seal
A properly engineered rotary airlock valve solves these problems at the source: a precision rotor turning inside a close-tolerance housing discharges material in a steady, metered stream while keeping the air gap sealed.
A tight rotor-to-housing clearance is what separates a valve that actually holds pressure from one that just looks like it does.
- Minimizes air/pressure leakage across the valve
- Delivers continuous, metered discharge instead of surges
- Reduces dust escape at the discharge point
- Cuts extra load on fans/blowers caused by air leakage
- Wear-resistant options extend life under abrasive duty
Reliable sealing and continuous discharge translate directly into steadier conveying and fewer unplanned stops.
Agromach Rotary Airlock Valve — Precision-Sealed
Built for continuous rice-mill and grain-handling duty, combining sealing precision with rugged construction.
Key Features
- Precision-machined rotor with close body clearances
- Continuous, metered material discharge
- Wear-resistant construction for abrasive grain and husk
- Durable cast iron/steel housing for continuous hours
- Configurable rotor pocket/vane design
- Compact, drop-in mounting under cyclones and hoppers
Drop-In Mounting Under Key Equipment
Agromach rotary airlock valves are designed to fit directly beneath:
- Cyclone separators in pneumatic conveying lines
- Silos and storage hoppers
- Dust collector and bag filter hoppers
- Any point needing an air-lock between two pressure zones
Drop-in mounting simplifies installation into existing ducting.
Types Available
- Rotary Airlock Valve
- Rotary Feeder
- Airlock Valve
- Rotary Valve
- Drop-Through Rotary Valve
- Blow-Through Rotary Airlock Valve
Applications
- Under cyclone separators in pneumatic conveying lines
- Discharge point for silos and storage hoppers
- Dust collector and bag filter hoppers
- Feeding material into pneumatic conveying at a metered rate
Rotary Airlock Valve Price
The rotary airlock valve price depends on:
- Valve size and required discharge capacity
- Body and rotor material — cast iron, mild steel, or stainless steel
- Rotor/pocket configuration and wear-resistant treatment
- Drive arrangement and speed control requirements
- Degree of customization for existing ducting
Contact our team for the latest rotary airlock valve price for your cyclone, silo, or hopper.
Frequently Asked Questions
Need a Reliable Rotary Airlock Valve for Your Rice Mill?
Talk to our experts to specify the right valve for your cyclone, silo, or hopper discharge point.
Agromach's rotary airlock valve — also known as a rotary feeder, airlock valve, or rotary valve — keeps rice mill and grain-handling systems sealed and material moving continuously.