📄 Download the Danfoss iSave 50 / iSave 70 Data Sheet (PDF) Official Danfoss document AI264763692435
The Danfoss iSave 70 Energy Recovery Device with 30 HP NEMA motor (vertical) (180U0064) is an isobaric Energy Recovery Device for seawater reverse osmosis. It combines an isobaric pressure exchanger, a vane-type high-pressure booster pump and a NEMA electric motor on a single shaft in one compact unit — recovering the pressure energy in the membrane brine stream and cutting SWRO energy consumption by up to 60%. All wetted parts are highly corrosion-resistant (Super Duplex / Duplex stainless), the unit is lubricated by the pumped seawater itself, and flow is proportional to speed for simple VFD control without high-pressure flow meters.
| Product Information | |
|---|---|
| Type / Model | iSave 70, NEMA motor version, vertical mount |
| Part Number | 180U0064 |
| Brand | Danfoss |
| Country of Origin | Denmark |
| Wetted Parts | Super Duplex / Duplex stainless steel |
| Certification | Delivered with EN 10204 3.1 performance certificate |
| Warranty | Danfoss guarantees 8,000 hours of service-free operation (max. 18 months from date of production) when installed and operated to Danfoss specifications — see the product manual for conditions |
| Technical Data (per Danfoss data sheet) | |
|---|---|
| HP Outlet Flow | 50–70 m³/h (220–308 GPM) |
| Max. Outlet Pressure (MAWP) | 83 barg (1,200 psig) |
| Max. Pressure Boost (HP out − HP in) | 5 bar (72 psi) |
| Speed Range (VFD) | 625–875 rpm |
| Efficiency @ 60 barg, max speed | 92.4% |
| Motor | 22.5 kW / 30 HP NEMA 324/6T, 6-pole, 1,180 rpm nominal, TEFC, IP55 |
| Media Temperature | 2–35 °C (36–95 °F) |
| Feed Filtration | 5 micron melt-blown (nominal) |
| Sound Pressure Level | 86 dB(A) @ 1 m |
| Unit Weight (dry, vertical) | 484 kg (1,067 lbs) |
| Footprint (vertical) | 0.44 m² (4.7 ft²) |
| Shipping Information | |
|---|---|
| Shipping Weight | ~1,150 lbs (crated, freight) |
| Shipping Dimensions | Crated for freight — contact us for crate dimensions |
Note: The iSave requires a VFD capable of constant torque from low to maximum speed (e.g. Danfoss FC 301/302) and 5-micron nominal feed filtration.
📄 Download the Danfoss Operation Manual (PDF) Official Danfoss document AQ265943679828en
