Tankless Direct-Flow RO Water Purification Systems
HF-400 (High Flow) Water Purifier
Direct-flow reverse osmosis · 400 GPD · 4 × 100 GPD membranes · 20" filter housings
Direct-flow reverse osmosis water purifier with 20" filter housings, a 400 GPD pump and 4 × 100 GPD membranes for high output. It produces water on demand without storing it in a tank.
- Capacity
- 400 GPD (1,514 L/day)
- Filtration
- 5 stages
- Membrane
- 4 × 100 GPD
- Pump
- 400 GPD
Stock code3-07-HF400
Overview
The 20" pre-filter cartridges give a long service life; a 10 bar gauge shows the operating pressure. Supplied with a shut-off valve or a solenoid valve.
Features
- Direct flow: tankless, always fresh water
- High 400 GPD capacity
- 4 × 100 GPD membranes
- Standard 20" filter housings
- Pressure monitoring with 10 bar gauge
Applications
- Busy offices and workplaces
- Cafés, restaurants and commercial kitchens
- Schools, dormitories and clinics
- Large households and multi-point use
Filtration Stages
- Mains waterEnters the unit from the cold water line through the feed valve.Inlet
- 0120" Sediment 5 µmRetains sand, rust and sedimentReplace: 6 - 12 months
- 0220" GAC CarbonReduces chlorine, taste and odourReplace: 6 - 12 months
- 0320" CTO CarbonReduces residual chlorine and organicsReplace: 6 - 12 months
- 044 × 100 GPD MembraneSeparates dissolved salts and contaminantsReplace: 12 - 24 months
- 052.5" Inline Post Carbon (Quick-connect)Polishes taste and odour as the final stageReplace: 6 - 24 months
- Purified waterPurified water is delivered to the faucet, ready to use.Outlet
| Stage | Filter | Function | Replace |
|---|---|---|---|
| Stage 1 | 20" Sediment 5 µm | Retains sand, rust and sediment | 6 - 12 months |
| Stage 2 | 20" GAC Carbon | Reduces chlorine, taste and odour | 6 - 12 months |
| Stage 3 | 20" CTO Carbon | Reduces residual chlorine and organics | 6 - 12 months |
| Stage 4 | 4 × 100 GPD Membrane | Separates dissolved salts and contaminants | 12 - 24 months |
| Stage 5 | 2.5" Inline Post Carbon (Quick-connect) | Polishes taste and odour as the final stage | 6 - 24 months |
Replacement intervals are typical values and depend on water quality and usage.
Technical Specifications
Operating Conditions
- Feed water pressure
- 1 - 4 bar (with pump)
- Feed water temperature
- 5 - 38 °C (41 - 100 °F)
- Feed water TDS
- Max. 500 ppm
- Feed water pH
- 3 - 11
- Power supply
- 220 - 240 V AC, 50 Hz
- Pump supply
- DC (via adapter)
Materials and Construction
- Stock code
- 3-07-HF400
- Filter housing
- Standard 20" housing
- Pump
- 400 GPD
- Membrane
- 4 × 100 GPD
- Faucet
- Luxury faucet
- Valve
- Shut-off or solenoid valve
- Pressure gauge
- 10 bar
- Warranty / service life
- 2 years / at least 10 years
Installation and Maintenance
- Shut the cold water valve; fit the connection kit (feed adapter) to the cold water line.
- Drill the worktop first with a 5 mm, then a 12 mm bit and mount the faucet.
- Connect the inlet, faucet and drain tubing; plug in the adapter.
- Open the valve and on first start-up flush the system by running the faucet for a few minutes.
Do not connect the unit to hot water (above 40 °C). Replace the filters at least once a year; if the unit is not used for more than a month, close the inlet valve and unplug the adapter.
Packaging and Loading
| Version | Box Size (mm) | Box Weight |
|---|---|---|
| HF 400 | 300 × 475 × 870 | 17.25 kg |
| Vehicle | Pallets | Boxes / Pallet | Palletised | Loose |
|---|---|---|---|---|
| 20' Container | 10 | 16 | 160 pcs | 168 pcs |
| 40' DC Container | 20 | 16 | 320 pcs | 350 pcs |
| 40' HC Container | 20 | 24 | 480 pcs | 525 pcs |
| Curtain-side Truck | 26 | 24 | 624 pcs | 672 pcs |
Compatible Filters
Standard replacement filters for this unit. Other filters that fit, including optional extra stages, are listed under Optional filters.
| Stock Code | Filter | Size | Connection | Filter type | |
|---|---|---|---|---|---|
| 6-02-10-05-EK110 +5 | End-Capped Spun PP Filter Cartridge | 10" - 20" | - | Spun PP | |
| 6-03-GAC10 +3 | GAC Carbon Filter Cartridge | 10" - 20" | - | GAC Carbon | |
| 6-03-CTO10 +1 | Standard CTO Carbon Block Filter | 10" - 20" | - | CTO Carbon | |
| 3-1-1-ST100 +1 | Star 2012 RO Membrane | 2012 | - | RO Membrane | |
| 6-25-POST-R | Regnum Inline Post Carbon Filter | 2.5" | Quick-connect | Post Carbon |
Optional filters (2)
| Stock Code | Filter | Size | Connection | Filter type | |
|---|---|---|---|---|---|
| 6-02-05-05 +4 | Spun PP Sediment Filter Cartridge | 10" - 20" | - | Spun PP | |
| 3-1-1-V100 +1 | Vontron 2012 RO Membrane | 2012 | - | RO Membrane |
Wholesale and OEM
Request a quote and lead time for this product
We quote distributors, installers and project contractors by stock code. Ask us about OEM and private label production as well.



