The Grundfos CRE 3-6 (product number 93286217, type key B-B-A-E-HQQE) is a 6-stage vertical multistage centrifugal pump rated 18.1 US gpm at 184.5 ft, driven by a 1.5 HP motor. Certified to NSF/ANSI 61 for drinking-water service.
Performance Curve
Official Grundfos curve — 60 Hz, water at 68 °F. Head (H) and efficiency (η) against flow (Q); lower chart shows power and NPSH required.
Performance & Hydraulic Data
| Rated flow | 18.1 US gpm |
| Rated head | 184.5 ft |
| Maximum head | 239.5 ft |
| Stages / impellers | 6 / 6 |
| Rated pump speed | 3988 rpm |
| Maximum operating pressure | 232.06 psi |
| Max pressure at temperature | 232 / 250 psi / °F |
| Pump orientation | Vertical |
| Curve tolerance | ISO9906:2012 3B |
Materials of Construction
| Pump base | Cast iron — EN 1561 EN-GJL-200 — ASTM A48-25B |
| Impellers & chambers | Stainless steel — EN 1.4301 — AISI 304 |
| Shaft seal | HQQE — EPDM elastomers |
| Bearing | SIC |
Motor & Electrical Data
| Rated power (P2) | 1.5 HP |
| Voltage | 200-240 V |
| Phase | Three-phase |
| Frequency | 60 Hz |
| Rated speed | 360-4000 rpm |
| Rated current | 4-3.4 A |
| Service factor | 1.15 |
| Power factor (cos φ) | 0.91 |
| Enclosure class | IP55 |
| Insulation class | F |
| Motor protection | ELEC |
| Motor flange | 56C |
| Grundfos motor number | 99301705 |
Connections & Operating Limits
| Connection type | Oval / NPT(F) |
| Pressure rating | PN 16 |
| Suction port | 1 inch |
| Discharge port | 1 inch |
| Liquid temperature range | -4 °F to 248 °F |
Approvals, Weights & Identification
| Approvals | CE,UKCA,SEPRO,RCM, |
| Drinking water | NSF/ANSI 61 |
| Grundfos product number | 93286217 |
| EAN | 5715470365973 |
| Net weight | 60.4 lb |
| Gross (shipping) weight | 71.4 lb |
| Country of origin | United States |
| HS / customs tariff code | 8413.70.2040 |
Typical Applications
Water supply and pressure boosting • reverse osmosis and filtration feed • water treatment • boiler feed • industrial process • HVAC • irrigation.
Need help? Contact ForeverPure Place for pricing, lead time, accessories, or help selecting the correct model for your application.
Accessories for This Pump
Commonly specified alongside Grundfos E-pumps. Send us your pump nameplate and we will confirm the correct part for your exact build and voltage before you order.
- RPI Inlet Pressure Sensor
Inlet pressure protection with low-suction shutdown. 
VFS Flow & Temperature Sensor
Flow and temperature feedback to the pump’s onboard controller.- RPS Pressure Sensor
Discharge pressure feedback for constant-pressure booster control.
Building-automation connectivity
This pump accepts a Grundfos CIM interface card (or an external CIU box) to report to a BMS or PLC. All eight are the same card with a different protocol — choose the one your building system speaks:
CIM/CIU 100 GENIbus · CIM/CIU 150 PROFIBUS DP · CIM/CIU 200 Modbus RTU · CIM/CIU 250 Modbus TCP · CIM/CIU 300 BACnet MS/TP · CIM/CIU 500 EtherNet/IP · CIM/CIU GRM · CIM/CIU LonWorks
