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Drop-Through Rotary Airlock Valves for Power Plants

UGES drop-through rotary airlock valves ensure dependable fly ash and pulverized coal metering in thermal power plant material handling systems. Built with high-temperature rated housings and erosion-resistant rotor blades, these valves maintain airtight sealing under the demanding conditions of coal-fired power generation.

Trusted by the largest brands

Drop-Through Rotary Airlock Valves Key Specifications

Cast iron or SS 304-lined housings, 10-blade adjustable rotors, and 150mm to 500mm inlets. Operate at temperatures up to 250°C and seal pressures up to 1.0 bar for reliable ash and coal handling.

Rotor Design

Open-end drop-through rotor with 10 blades for high-frequency cycling of fine fly ash and pulverized coal, delivering uniform volumetric discharge with minimal air leakage.

Housing Material

Cast iron housing with optional SS 304 lining for corrosion resistance against sulfurous fly ash in flue gas treatment and ash handling systems.

Inlet Size Range

150mm to 500mm inlet flanges in round and square configurations, compatible with ESP hopper outlets and pneumatic ash conveying pipe diameters.

Pressure Rating

Rated for differential pressure up to 1.0 bar, providing effective air sealing between pressurized pneumatic lines and atmospheric hopper collection points.

Temperature Range

Standard operation up to 120°C with high-temperature variant rated to 250°C for direct discharge beneath economizer and air preheater ash hoppers.

Blade Configuration

10-blade rotor with replaceable hardened alloy steel tips for the fine abrasive characteristics of fly ash with field-adjustable clearances.

Industrial Applications

Used in ESP hopper fly ash discharge, coal mill feeding, and bottom ash conveying. Open-end drop-through rotor ensures smooth gravity flow of fine, abrasive power plant materials with minimal buildup.

Application 1

ESP Hopper Fly Ash Discharge

Meters collected fly ash from electrostatic precipitator hoppers into dense-phase conveying systems, maintaining negative pressure in the ESP while ensuring continuous ash evacuation.

Application 2

Coal Mill Feeder Airlock

Provides a reliable pressure seal between raw coal bunkers and pulverizer mills, metering coal at controlled rates while preventing hot air blowback from the mill.

Application 3

Bottom Ash Conveying

Feeds cooled bottom ash from boiler ash hoppers into pneumatic conveying lines, isolating the high-pressure conveying system from the atmospheric furnace bottom.

Patient Reviews

Customer Testimonial

We've been sourcing conveyor components from United Global Engineering Solutions for quite some time now. Their conveyor belt accessories, including industrial conveyor rollers and pulleys, have consistently met our quality and performance standards. We highly recommend them for all your conveyor system needs.

Ralph Bader

The Repeat Client

We worked with United Global Engineering Solutions for our conveyor needs, and the experience was excellent from start to finish. Their team understood our requirements quickly, recommended the right conveyor solution for our operations, and delivered quality industrial conveyor belts that made a real difference. Since the installation, our workflow has improved and day-to-day operations feel much more efficient. We’re grateful for their support and would gladly recommend them.

Nageshwar Naidu

The Satisfied Customer

We’ve worked with United Global on multiple projects, and their conveyor belts for food processing have made a real difference. What stands out most is their ability to customize solutions to our needs and deliver quality products on time. Their prompt service and cost-effective approach have made them a partner we can count on.

Shri Kanth Reddy

The Valued Partner

We’ve worked with United Global Engineering Solutions on multiple projects, and they’ve consistently delivered. Their conveyor belts for food processing have made a real difference for us, and we’ve appreciated how they tailor solutions to our specific needs. The team is responsive, the service is prompt, and the solutions are cost-effective without sacrificing quality.

Sharadha Mohan

The Satisfied Manufacturer

15+

Industries Served

10+

Years of Experience

500+

Systems Installed

600+

Happy Clients

A world-class conveyor manufacturer based in India, serving industrial markets across the globe.

Drop-Through Rotary Airlock Valves for Power Plants

Drop-Through Rotary Airlock Valves Key Specifications

Cast iron or SS 304-lined housings, 10-blade adjustable rotors, and 150mm to 500mm inlets. Operate at temperatures up to 250°C and seal pressures up to 1.0 bar for reliable ash and coal handling.