The Enpress ONE Cartridge Tank in its commercial configuration: the same 100% non-metallic, no-tools housing as the residential system, fitted with 4.5" threaded top and bottom caps and the matching 4.5" bottom drain and plumbing adapter. That is the fitting set the commercial Red Series pleated and Purple Series meltblown cartridges need, with their 2" fittings and large-diameter centre tubes, to run at 100 to 150 gpm with low pressure drop.
Specifications
| Enpress ONE Cartridge Tank Filtration System, Commercial 4.5" Configuration | |
|---|---|
| Rating | |
| Listing | NSF/ANSI 44 and 61 listed device |
| Pressure | Tested to 150 psi operating pressure with a 4:1 burst safety factor |
| Cartridge | One 8 in × 40 in Enpress ONE commercial cartridge (Red or Purple Series) |
| Configuration and connections | |
| Configuration | Commercial: 4.5" threaded top and bottom caps (CT-4.5LID), 4.5" bottom drain and adapter (CT-4.5DRAIN / CT-4.5ADAPTER) |
| Plumbing connections | Full 1¼" and 2" connection options per Enpress; see the spec sheet for the adapter fitted |
| Top cap option | Cap with pressure-release valve and removal handles (CT-1/4NPTLID) |
| Size and shipping | |
| Height to floor | 39¾ in (1010 mm), per the Enpress spec sheet schematic |
| Shipping weight | 13.58 lb |
| Construction | |
| Body | 100% non-metallic; patented industry-exclusive liner; full radial seal top and bottom caps |
| Cartridge retention | No-tools snap ring with I.D. tag |
| Finish | Supplied in black (Enpress offers natural, blue, almond, grey and black) |
| Identification | |
| System | Enpress ONE Cartridge Tank®, commercial 4.5" configuration |
| Our SKU | NFS-HF-PLUS |
| Companion | NFS-HF (residential / light-commercial 2.5" configuration); E1 integrated bypass, meter and drain connection system available separately |
| Manufacturer warranty | One year from date of purchase on ONE Cartridge Tank and filter solutions, to the original purchaser, under the Enpress ONE Limited Warranty (2025-04). Normal wear items and damage from oxidising agents are excluded; see the document. |
How it is built
- Composite tank body — 100% non-metallic, nothing to corrode, tested to 150 psi with a 4:1 burst margin.
- Patented liner and full-radial-seal caps — the seal that lets the top come off without tools and go back on without leaks.
- Snap ring with I.D. tag — press the red relief valve, pull the ring, lift the cap, swap the cartridge.
- 4.5" threaded caps and bottom drain/adapter — the commercial fitting set for 2"-fitting cartridges.
Plumb a drain. Enpress recommends a drain on the inlet side for flushing sediment out of the tank, and one on the outlet side for flushing new cartridges.
Cartridge sold separately. Use the commercial Red or Purple Series cartridges; the residential series cartridges are for the NFS-HF configuration.
Where it is used
Commercial and industrial sediment filtration at 100 to 150 gpm: make-up water, RO pre-filtration, cooling towers, chilled-water loops and process water, in place of multi-round stainless housings.
Not sure which ONE cartridge or configuration suits your water and flow? Contact our engineers.
Sources: Enpress “ONE Cartridge Tank” spec sheet (01/2022) and Cartridge Tank product page; Enpress “Red Series” and “Purple Series” spec sheets; Enpress “ONE Limited Warranty” (2025-04). Height is from the Enpress schematic; shipping dimensions allow for packaging. Performance claims are Enpress’s, based on independent lab results and manufacturer test data; actual performance depends on influent water quality, flow rate, system design and application. Micron ratings are nominal unless stated absolute. Enpress, ONE, Cartridge Tank, Vortech and Agion are trademarks of their owners, used here to identify the product supplied. Confirm critical figures with ForeverPure before purchase.
