Waterco Trimline Bag Filter
The Waterco Trimline Bag Filter (TBF) is a one-piece, high-impact polypropylene bag housing built for aquaculture water treatment. With no metal to corrode, it suits seawater, brackish and recirculating systems, working as a low-cost coarse pre-filter, leaf trap and solids strainer ahead of pumps, UV units and biofilters. This listing covers the two models, C50 and C75, both with 40/50 mm half-union ports and an internal 2″ BSP thread, rated to 600 kPa (87 psi) and 40 °C, and taking disposable bags from 1 to 800 micron.
Key features
- One-piece moulded high-impact polypropylene, corrosion-proof in seawater and brackish water with no rust or metal leaching into culture water
- Two models to match your flow and bag capacity: C50 (7″ × 16.5″ bag, 0.17 m²) and C75 (7″ × 26″ bag, 0.27 m²)
- Ergonomic screw-down lid for fast, hand-operated bag change-outs with no tools required
- 40/50 mm half-union ports with an internal 2″ BSP thread for easy plumbing and removal
- Support cage with a positive locking mechanism holds the filter bag firmly in place
- Air-release valve and pressure-gauge port fitted as standard, with stable moulded mounting feet
- Disposable polyester bags from 1 to 800 micron (800 micron in nylon) for coarse pre-filtration and leaf trapping
- Rated to 600 kPa (87 psi) and 40 °C (100 °F)
Which model do I need, C50 or C75?
The C50 takes a 7″ × 16.5″ bag (0.17 m² surface area) and suits lower volumes and tighter installs, needing about 530 mm of clearance above the lid for servicing. The C75 takes a longer 7″ × 26″ bag (0.27 m²) for greater dirt-holding capacity and longer runs between change-outs, and needs about 770 mm of servicing clearance. Both share the same 2″ BSP / 40-50 mm connections, 600 kPa rating and 40 °C limit.
What flow rate does it handle?
Flow depends on the duty. As a coarse pre-filter or leaf trap the C50 handles up to 55 LPM (15 gpm) and the C75 up to 88 LPM (23 gpm). For finer, higher-solids filtration Waterco rates them more conservatively at 21 LPM (6 gpm) for the C50 and 33 LPM (9 gpm) for the C75. Match the bag micron and model to your solids load and target flow.
Why polypropylene for aquaculture water?
Seawater, brackish water and dosing chemicals corrode metal housings and can leach metals into sensitive culture water. The Trimline body is moulded in one piece from inert, high-impact polypropylene, so it is a low-cost, reliable strainer for marine, brackish and recirculating aquaculture systems.
Aquaculture applications
Marine and brackish recirculating aquaculture systems (RAS), hatcheries and live-holding systems, incoming-seawater pre-filtration and leaf/solids trapping, and protecting pumps, UV units, heat exchangers and biofilters from coarse solids. Browse the full Bag Filters range for filter bags and other housings.
Specifications
| Specification | C50 | C75 |
|---|---|---|
| Model | Trimline TBF C50 | Trimline TBF C75 |
| Housing material | High-impact polypropylene (one-piece moulded) | High-impact polypropylene (one-piece moulded) |
| Filter bag size | 7″ × 16.5″ (178 × 419 mm) | 7″ × 26″ (178 × 660 mm) |
| Bag surface area | 0.17 m² (1.85 ft²) | 0.27 m² (2.9 ft²) |
| Connections | 40/50 mm half unions, internal 2″ BSP thread | 40/50 mm half unions, internal 2″ BSP thread |
| Max. flow (coarse / pre-filter) | 55 LPM (15 gpm) | 88 LPM (23 gpm) |
| Max. flow (fine / high-solids) | 21 LPM (6 gpm) | 33 LPM (9 gpm) |
| Max. pressure | 600 kPa (87 psi) | 600 kPa (87 psi) |
| Max. temperature | 40 °C (100 °F) | 40 °C (100 °F) |
| Bag micron ratings | 1, 5, 25, 50, 800 micron | 1, 5, 25, 50, 800 micron |
| Bag material | Polyester (800 micron in nylon) | Polyester (800 micron in nylon) |
| Servicing clearance | 530 mm (20.9″) | 770 mm (30.3″) |
| Standard features | Support cage with locking mechanism, air-release valve, pressure-gauge port, ergonomic lid, mounting feet | Support cage with locking mechanism, air-release valve, pressure-gauge port, ergonomic lid, mounting feet |
| Warranty | 5-year (2 full + 3 pro-rata); 2-year conditional on commercial use | 5-year (2 full + 3 pro-rata); 2-year conditional on commercial use |
Downloads
Frequently asked questions
Is it suitable for salt water? Yes. The housing is one-piece high-impact polypropylene, built for seawater and brackish aquaculture water where metal housings corrode.
What flow rate does it handle? Up to 55 LPM (C50) and 88 LPM (C75) as a coarse pre-filter; rate it to 21 LPM (C50) or 33 LPM (C75) for fine, high-solids duty.
What is the maximum pressure and temperature? Both models run to 600 kPa (87 psi) and 40 °C (100 °F).
What filter bags does it use? Disposable bags from 1 to 800 micron: a 7″ × 16.5″ bag in the C50 and a 7″ × 26″ bag in the C75.
