Spare parts for ERI turbochargers and pumps
Besides PX pressure exchangers, Energy Recovery (ERI) makes turbochargers and pumps for reverse osmosis plants. We supply rebuild kits, bearings and hydraulic inserts for AT and LPT turbochargers, and spares for the circulation, booster and high-pressure pumps that run alongside them.
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What we supply
- Rebuild kits and thrust bearings for AT-series turbochargers, matched to the model and serial number.
- Hydraulic inserts (volute inserts and impellers) when the operating point of the train has changed.
- Complete AT and LPT turbochargers.
- Spares for circulation and booster pumps used with PX arrays, and for AquaBold high-pressure pumps: mechanical seals, bearings and wear parts.
- PX units and cartridges are on a separate page: ERI PX pressure exchangers.
How an ERI turbocharger works
A turbocharger is a turbine and a pump on one shaft, with no motor. Energy Recovery describes it this way: "The turbine impeller absorbs the hydraulic energy of the concentrate stream and converts it into mechanical energy", which the pump impeller uses to raise the feed pressure. The high-pressure pump then has less pressure to add.
Published ranges
| Product | Use | Range published by Energy Recovery |
|---|---|---|
| AT turbocharger | Seawater RO | Flow 11 – 375 m³/h (48 – 1,651 gpm); pressure 27 – 83 bar (400 – 1,200 psi) |
| LPT turbocharger | Brackish RO and multi-stage systems | Pressure up to 41.4 bar (600 psi) |
| VPXP pump | Circulation with PX arrays | Permeate production up to 520 m³/h |
| HP pump | Circulation and boosting | Permeate production up to 68 m³/h (300 gpm) |
| UHP pump | Ultra-high-pressure boosting | Up to 120 bar (1,740 psi) and 22.7 m³/h (100 gpm) |
Sources: Energy Recovery — Turbochargers, Energy Recovery — Pumps.
Energy Recovery states that the AT has "completely removable and replaceable hydraulics" and that inserts "can be removed and replaced in hours instead of days or even weeks". That is why a changed operating point usually needs a new insert, not a new turbocharger.
What fails and which part it needs
| Symptom | Usual cause | What we quote |
|---|---|---|
| Vibration or noise | Bearing wear | Rebuild kit with bearings; thrust bearing |
| Pressure boost lower than at commissioning | Wear in the hydraulics, or the train now runs at a different flow and recovery | Check operating data first. Then rebuild kit or a new hydraulic insert |
| Leak at the casing or connections | Worn seals or O-rings | Seal and O-ring kit |
| Circulation pump leaks at the shaft | Mechanical seal worn | Mechanical seal; bearings if the pump has run with the leak |
Where these machines are installed
Energy Recovery's own announcements show the range in service. At the Blue Hills plant in Nassau, Bahamas, Consolidated Water selected PX devices together with ERI AquaBold high-pressure pumps for an 18,500 m³/day expansion in 2011.
Source: Energy Recovery (10 May 2011) — Blue Hills, Bahamas.
What we need to quote
- Model and serial number from the nameplate (for example AT-350).
- ERI part number of the kit or component, if you have it.
- For a new hydraulic insert: feed flow, brine flow, and feed and brine pressures at the current operating point.
- Quantity and delivery country.
Documents
- Commercial invoice and packing list.
- Distributor invoice or confirmation identifying where the part was bought.
- Manufacturer's certificate of origin where the manufacturer issues one.
- Photos of the parts and their labels before dispatch.
- Air waybill (AWB) or bill of lading (B/L).
Have the equipment nameplate to hand?
Send a photo or the part number. We check the model and reply within 4 business hours.
Related pages
Frequently asked questions
Do you supply rebuild kits for ERI AT turbochargers?
Yes. We quote rebuild kits and thrust bearings for AT-series turbochargers from the model and serial number on the nameplate.
The plant now runs at a different flow. Do I need a new turbocharger?
Usually not. Energy Recovery builds the AT with removable hydraulics, so a new insert sized for the new operating point is normally enough. Send the current feed and brine flows and pressures.
What is the difference between an ERI turbocharger and a PX pressure exchanger?
A turbocharger uses the brine to drive a turbine that boosts feed pressure. A PX transfers brine pressure to the feed directly and needs a separate booster pump for circulation. The PX recovers more energy; the turbocharger is simpler to integrate.
Do you supply ERI circulation pump spares?
Yes: mechanical seals, bearings and wear parts for the circulation and booster pumps used with PX arrays, quoted by ERI part number or by pump model and serial number.