ATMP-893-23 Axial Piston Pump
Energy Recovery · ATMP-893 Series · 893 cc Displacement
| Pump Performance | |
| Displacement | 893 cc/rev |
| Number of Stages | 23 |
| Maximum Outlet Pressure | 1200 psi (83 bar) |
| Minimum Inlet Pressure | 14.5 psi (1 bar) |
| NPSH Required | 14.5 psi (1 bar) |
| Maximum Design Speed | VFD Operated up to 3600 RPM |
| Flow Control | Variable Frequency Drive (VFD) |
| Service | Seawater RO Concentrate |
| Wetted Materials | |
| Casing / Manifold | SAF 2507 Super Duplex SS (UNS S32750) |
| Shaft | SAF 2205 Duplex SS (EN 1.4462) |
| Sleeve | SAF 2205 Duplex SS (EN 1.4462) |
| Inlet / Outlet | SAF 2507 Super Duplex SS |
| Shaft Coupling | SAF 2205 Duplex SS |
| Elastomeric Seals | NBR (Neoprene) Rubber |
| Shaft Seal System | |
| Seal Type | Pressure Balance Mechanical Seal |
| Seal Face Materials | Ceramic / Silicon Carbide |
| Seal Lubrication | API Plan 02 |
| Seal Manufacturer | Manufacturer standard |
| Piping Connections | |
| Inlet / Outlet Size | 4" (DN 100) |
| Connection Type | Grooved Pipe |
| Coupling Guard | Stainless Steel |
| Motor Support | Steel with Epoxy Paint |
| Motor Specifications | |
| Rated Power | 175 HP (132 kW) |
| Frame Size | 315M |
| Motor Type | Horizontal C-face IEC, IP54 |
| Voltage | 380-440 / 441-500V at 50/60 Hz |
| Frequency | 50/60 Hz — Inverter Duty |
| Phase | 3-Phase |
| Thermal Protection | Optional (PT100 RTDs available) |
| Fasteners (non-wetted) | 304 SS (EN 1.4301) |
| Operating Conditions | |
| Medium | Seawater / RO Concentrate |
| Operating Temperature | 33-104°F (0.6-40°C) |
| Total Weight (pump + motor) | 1290 lb (585 kg) |
| Direction of Rotation | CW facing pump drive end |
| Curve Tolerance | ISO 9906:2012 Grade 3B |
| Testing & QA | |
| Hydrostatic Test | Standard (casing) |
| Motor Test | Per manufacturer standard |
| Material Certificates | Optional |
| Witness Test | Optional |
| Paint System | Manufacturer standard C2 |
SWRO DesalinationHigh-Pressure BoostSeawater RO FeedEnergy Recovery System
Engineering Note: The ATMP-893-23 is a 893 cc, 23-stage axial piston pump rated for 1200 psi (83 bar). Designed as a high-pressure feed pump for SWRO desalination trains, it pairs with ERI PX Pressure Exchangers to deliver the complete energy recovery solution. The Super Duplex (SAF 2507) and Duplex (SAF 2205) stainless steel construction provides superior corrosion resistance for seawater and concentrate service. VFD operation allows precise flow control across the operating envelope.
Need sizing assistance? Contact our engineering team for pump curves, system design, and quotation.
