Prater Rotary Airlocks & Size Reduction Equipment

Replace a worn rotary valve, break lumps, or mill to a specified particle size. RTS helps you match the equipment to your material, duty and installation.

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Are you replacing a rotary valve, breaking lumps, or grinding finer?

Choose the result you need from the next process step

Lump breaking restores flow when acceptable particles have agglomerated. Milling changes particle size. A rotary airlock meters solids across a pressure difference. For an existing valve, report whether leakage, wear, a poor discharge pattern or limited capacity prompted the review.

Prater Rotary Airlock Valves
The mounting and pressure conditions matter when specifying a new or replacement airlock.

Choose the equipment for your job

Open a product for details, or use the guided RFQ to review your application with RTS.

Prater Rotary Airlock Valves

Rotary Airlock Valves

Feed solids while limiting air leakage between pressure zones.

Review valve wear, differential pressure, product temperature and mounting before specifying a replacement.

Also known as: Rotary valves, rotary feeders, airlocks, star valves.

Prater Lump Breakers

Lump Breakers

Break agglomerates to restore flow.

Open up lumps formed in storage or transit before they interrupt feeding, mixing or packaging.

Also known as: Lump crushers, flake breakers, deagglomerators.

Prater Hammer Mills

Hammer Mills

Reduce larger dry particles to a usable grind.

Review the feed size, grind target and capacity for dry ingredients or other bulk solids.

Also known as: Hammermills, impact mills, screened mills.

Prater Air Classifier Mills

Air Classifier Mills

Grind fine powder and control the particle-size cut.

Review an integrated milling and classification stage when the coarse end of the distribution matters.

Also known as: Air classifying mills, ACMs, classifier mills.

Prater Fine Grinders

Fine Grinders

Produce a fine grind from dry, free-flowing material.

Compare fine grinding options for ingredients, sugars and other materials where the grind target matters.

Also known as: Fine grinding mills, high-speed impact grinders.

Prater Rotor Mills

Rotor Mills

Review screenless milling or deagglomeration.

Share material behaviour and the output specification to assess a long-gap rotor mill.

Also known as: Rotormill, long-gap mills, screenless rotor mills.

See Prater equipment in action

G5 hammer mill material demonstration

See the hammer mill handle different feed materials and inspect the resulting grind.

Faba bean protein enrichment

See an example of fine milling and classification in a pulse processing application.

How the equipment fits into your process

Under a hopper or dust collector

Review rotary airlock discharge with the solids loading, pressure difference, temperature and available mounting envelope.

Between storage and production

Break lumps before a feeder, conveyor or mixer when agglomerates disrupt a steady supply.

Ahead of blending or classification

Define the feed distribution and acceptable oversize so the milling stage can be reviewed against the next process.

Application examples

Prater sugar grinding system rendering
Grinding sugar as part of a system
The manufacturer drawing shows how the grinder fits into the larger material handling and grinding arrangement.
Flour and dough application photograph
Finer flour for food processing
Prater uses flour as an example of a duty where feed preparation and the target fineness guide mill selection.

Literature and application resources

Rotary Airlock Valves brochure

Review construction options for feeding and airlock duty.

Open PDF

Lump Breakers brochure

Review available lump and flake breaker configurations.

Open PDF

Hammer Mills brochure

Review screened impact mill configurations.

Open PDF

Air Classifier Mills brochure

Review equipment combining grinding and air classification.

Open PDF

Fine Grinders brochure

Review fine grinding models and options.

Open PDF

Rotor Mills brochure

Review the long-gap, screenless milling approach.

Open PDF

Charcoal rotary airlock case study

Review how wear and abrasion informed the rotary airlock selection.

Open PDF

Application worksheets

Use the Prater airlock survey for new or replacement valves, or the mill data sheet for milling and size reduction.

View worksheets

Questions to help plan your application

What should I send for a replacement rotary valve?

Include the make, model, serial number or nameplate photo, inlet and outlet flange dimensions, material, capacity, temperature, and differential pressure with units. Tell us what failed or changed.

Do I need a lump breaker or a mill?

Use lump breaking to restore flow when acceptable particles have agglomerated. If the primary particles themselves need to be smaller, share the feed and target size ranges for a milling review.

What should I send for an application review?

For milling, include material, bulk density, moisture, feed and target size distributions, required rate, and any heat or contamination limits. A sample and test criteria help when the result is critical.

READY TO DISCUSS YOUR APPLICATION?

Request a rotary airlock or size reduction review

Use a worksheet to gather details with your team, or work through the guided online RFQ.

Download RFQ Worksheet Instant RFQ Online Form

Choose your RFQ worksheet

Use the Prater airlock survey for new or replacement valves, or the mill data sheet for milling and size reduction.

RATE TECHNOLOGY SYSTEMS

Prater Quote Request

Tell RTS what you are handling and what you need the equipment to do. Fill in the details you know.

Prefer to speak directly? Email Sales or call 905-607-3240.