Type A3
The Type A3 Filter Arm, manufactured by KSH Germany, is a precision slotted arm (0.25 mm) used in KSH star systems and central pipe drainage assemblies. It is available with G 3/4″, M30×2, or G 1″ connection threads and a range of standard lengths from 85 mm to 1074 mm for customized system designs. The A3 arm delivers reliable filtration and consistent backwash performance. Absorb NZ is the exclusive distributor of KSH filtration components in New Zealand.
Features
Slot Size by Colour
- crop_square 0.2mm Slot Size - Ivory
- crop_square 0.3mm Slot Size - Green
- crop_square 0.35mm Slot Size - White
- crop_square 0.5mm Slot Size - Grey
- crop_square 0.7mm Slot Size - Yellow
- crop_square 0.8mm Slot Size - Blue
- crop_square 1.0mm Slot Size - Black
- crop_square 1.5mm Slot Size - Orange
- crop_square 2.0mm Slot Size - Green
Specifications
Technical Specifications – Type A3 Filter Arm
| Specification | Detail |
|---|---|
| Manufacturer | KSH Germany |
| Model | Type A3 |
| Design | Slotted filter arm |
| Slot Width | 0.25 mm |
| Connection Threads | G 3/4″, M30×2, or G 1″ |
| Standard Lengths | 85 mm – 1,074 mm |
| Installation Type | Screw-in connection to star system or central pipe |
| Material Options | Polypropylene (PP) or PVDF (depending on configuration) |
| Application | For use in KSH star systems and central-pipe drainage assemblies |
| Function | Ensures efficient flow distribution and uniform backwashing |
| Exclusive NZ Distributor | Absorb It Ltd |
Links
Downloads
Specification Guide
Installation Guide
Uninstallation Guide
Video
Watch the Orthos 4-Part Filter Nozzle Series
Deepen your understanding of filtration system design with the Orthos’ four-part video series — Filter Nozzles 101, 102, 103, and 104.
Explore everything from material selection and screen slot widths to pressure drop dynamics and advanced tailpipe construction for air scour systems.
Whether you’re an engineer, designer, or filtration specialist, these videos unpack the science behind high-performance nozzle systems — helping you optimise efficiency, durability, and performance in every project.

