Heavy Duty Abrasion-Resistant Drop-Thru Rotary Airlock Valve

The HDAR Heavy Duty Abrasion-Resistant Drop-Thru rotary airlock valves are designed for severe applications where highly abrasive conditions exist. Offered in a choice of ceramic lined or DuraKast™, both can significantly improve the wear factor on the valve and reduce the pre-mature equipment failure often associated with such applications.

The ceramic version starts with any of our Heavy-Duty rotary airlock valves. We bond ceramic tiles to the inside of the cast iron housing and on the rotor tips. The DuraKast units are completely cast out of a hard chrome material suitable for applications with higher pressure differentials. The DuraKast units also have Stellite™ on the rotor tips for extended abrasion resistance. Both styles offer extended life over that of a standard cast iron rotary valve by as much as 6 times.

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Rotary Airlock Valves Application Data Sheet

Description

COMMON SERVICE CONDITIONS

Pressure Rating: 22 PSI
Maximum Operating Temperature: 250°F
Materials: Dry Free-Flowing Extremely Abrasive Particles

TYPICAL APPLICATIONS

Pneumatic Conveying, Blending, Dust Collection, Drying, Pollution Control, Weighing, Mixing, Feeding

RELEVANT INDUSTRIES

Mining – Sand, Alumina, Copper
Power – Fly Ash, Coal
Cement – Kiln Dust, Raw and Finished
Asphalt – Limestone, Granite
Steel – Oxides, Grinding Dust, Sinter

UNMATCHED COMPETITIVE ADVANTAGES

CERAMIC

Precision-Cut ceramic tiles bonded in place minimizing gap exposure
Closed-End rotor designs with ceramic tiled end disc perimeter and tungsten carbide tips for prolonged wear resistance
HVOF spray-on packing area for extended shaft life
Ceramic can be re-ground for additional life

DURAKAST

Oversized housing thickness designed to be re-ground for many years of service
Pre-Cast flange holes allow for easy field installation on new or replacement units
Closed-End rotor with welded hard-faced stellate tips for maximum wear resistance
End plates are hard chrome lined with an optional purging feature
Higher pressure differentials for highly abrasive applications 650 Bhn high chrome wear resistant casting for maximum life