Key Features
- Open-Weave Gratings/Decks: Pultruded FRP grate panels or bonded grids sized for desired slot (e.g. 1–5 mm) to hold back filter media.
- Chemical Resilience: Materials inert to acids, chlorine, chloramines, ferric chloride, etc.
- Structural Strength: Engineered to bear the weight of the media column without sagging.
Benefits
- Uniform Flow Distribution: Prevents channeling and ensures equal treatment of the media bed.
- No Corrosion: Unlike steel support beams or sump piping, FRP never rusts, so life cycle is extended.
Applications
Underdrains in pressure or gravity sand filters, backwash troughs, multimedia filter support, and as intermediate beds (e.g. anthracite plate supports). Also used in submerged media filters in clarifiers.
Technical Specifications
Slot width and support geometry per filter design. Typical thickness 10–30 mm depending on span. Load capacity designed per AWWA or EN filter codes.
Unique Selling Points
We can provide FRP supports that replace heavy gravel packs or stainless steel grids, improving filter efficiency and reducing maintenance.