Product Overview

The S-Trap HD removes airborne particles by inertial separation and is normally self-cleaning.

The product is designed as a bolt-on prefilter for Air Handling Units placed in areas with sand or dust storms or otherwise exposed to heavy dust loads. The S-Trap HD's heavy-duty construction is also suitable as a prefilter for engines installed in moving equipment in mines, etc.
The S-Trap HD (STHD) casing and other critical parts are made from thicker 3mm steel and welded together to ensure durability, vibration resistance and support during harsh conditions.
The S-Trap HD inlet grille is easily removable for inspection or replacement of the filtration elements.
The S-Trap HD shares the same efficiency and filtration capacity of the STL model with an arrestance of 92% when tested with SAE J 726 Coarse Dust. The S-Trap HD also operates at reduced flow with a pressure drop as low as 50Pa while maintaining efficiency above 90%.


  • Industry leading capacity
  • High filtration performance with lower pressure drop
  • Heavy duty welded and painted construction
  • Self-cleaning
  • Painted mild steel or stainless steel options
  • Quick & easy removable inlet grille and filtration elements
Housing Height (mm) 998 - 2,496
Number of Filter Element 1-40
Arrestance 92%
Housing Material (Standard) Galvanised Steel
Housing Material (Optional) Stainless Steel
Dust Chute Center, Left, Right, Both sides
Special Size Available Yes
Other Options

Secondary Fan, Control Panel, Manometer ,

WeatherHood,Support Legs

Heavy Duty Performance
Built to withstand harsh environments, rust free, self-cleaning, rigid design and equipped with long-lasting materials

Casing and dust chute are welded heavy duty painted mild steel or stainless steel, other components are individually hot-dip galvanised steel or stainless steel.

Smart design to optimise the space, weight and installation. Easy to remove inlet grill and filtration elements for convenient inspection. Dust chute can be ordered with flange positioned at the bottom centre, right side, left side or both sides of the S-trap. Flange on both sides is used when a standby secondary fan is required.

S-Trap HD can be produced in different material based on customer preference.
Mild Steel + Paint
Stainless Steel






Any Questions?