Description
The Grundfos 98507628 (CMB-SP 3-37 I-C-A-A-C-A) is a Submersible Borehole Pump — Stainless Steel. Submersible pumps for groundwater supply, irrigation, and borehole installations. All stainless steel EN 1.4301. Nominal performance: 13.2US gpm at 90.88ft. Rated 220-230V, 1-Phase, 50 Hz. Applications include Plumbing: Pressure Boosting, Residential water pressure boosting.
4" Borehole Design
SP is engineered for 4-inch wells — the most common residential and light commercial borehole diameter in North America. Confirmed fit before installation.
All Stainless Steel
Motor, shaft, stages, and column pipe in stainless steel. No corrosion in groundwater regardless of pH, iron content, or chloride levels.
Sandtight Construction
Sand guard and tight tolerances prevent abrasive particles from entering the motor or stages. Extended life in sandy aquifer conditions.
Wide Range — 60 Hz Models Available
SP covers 0.5 to 125 HP across dozens of frame sizes for residential through municipal borehole supply. Confirm 60 Hz model for US installations.
MS6/MS4 Motor Integration
SP pumps pair with Grundfos MS4 and MS6 submersible motors. Matched set from one manufacturer — one warranty, one technical support contact.
Authorized Distributor
PumpStop stocks and sources Grundfos SP pumps and MS motors. Contact for sizing, lead time, and technical selection support.
| Model Number | 98507628 |
| Product Series | SP |
| Series Description | Submersible Borehole Pump — Stainless Steel |
| Power | 0.67HP |
| Voltage | 220-230V |
| Phase | 1-Phase |
| Frequency | 50 Hz |
| Motor Speed | 2750-2780rpm |
| Pump Speed | 2900rpm |
| Motor Protection | TP 211 |
| Insulation Class | F |
| Protection Class (IP) | IP55 |
| Nominal Flow | 13.2US gpm |
| Nominal Head | 90.88ft |
| Max Operating Pressure | 145.04psi |
| Max Fluid Temperature | 104°F |
| Max Ambient Temperature | 122°F |
| Inlet Connection | 1 |
| Outlet Connection | 1 |
| Pipe Pressure Rating | PN 10 |
| Pipe Standard | ISO 228-1 |
| Impeller Material | Stainless steel |
| Housing Material | Stainless steel |
| Shaft Seal | AVBE |
| Approvals / Certifications | CE, RCM |
| Electrical | Verify supply voltage, phase, and frequency match nameplate before installation: 220-230V, 1-Phase, 50 Hz. |
| Temperature limits | Do not exceed max fluid temperature 104°F or max ambient temperature 122°F. Exceeding limits damages seals and motor insulation. |
| Dry running | Do not run dry. SP pumps use the pumped fluid to lubricate the shaft seal. Dry running destroys the seal within seconds. Install dry-run protection on all automatic installations. |
| Maintenance | Refer to the Grundfos Installation and Operating Manual (IOM) for correct installation, commissioning, and maintenance. Contact PumpStop for documentation. |
- EAN
- 5711496304613
- Approvals
- WEEE
- Built-in motor protection
- TP 211
- Code for rubber
- EPDM
- Code for shaft seal
- AVBE
- Connection
- PN 10
- Curve tolerance
- ISO9906:2012 3B
- Density
- 62.29 lb/ft³
- Enclosure class (IEC 34-5)
- IP55
- Environmental approvals
- WEEE
- Gross weight
- 45.5 lb
- Housing
- Stainless steel
- Impeller
- Stainless steel
- Impellers
- 4
- Insulation class (IEC 85)
- F
- Length of cable
- 1.5 m
- Liquid temperature range
- 32 .. 140 °F
- Mains frequency
- 50 Hz
- Material Pricing Group
- 16
- Maximum ambient temperature
- 131 °F
- Maximum current consumption
- 3.1-2.8 A
- Maximum operating pressure
- 10 bar
- Model
- B
- Net weight
- 33.9 lb
- Pipe connection standard
- ISO 228-1
- Power plug
- Australian plug
- Pressure rating for connection
- PN 10
- Pump housing
- Stainless steel
- Pump speed on which pump data are based
- 2900 rpm
- Pumped liquid
- Water
- Rated flow
- 13.2 US gpm
- Rated head
- 90.88 ft
- Rated power - P2
- 0.5 kW
- Rated speed
- 2750-2780 rpm
- Rated voltage
- 1 x 220-230 V
- Real Time
- Delivery date to be confirmed on Sales Order Update with real time availability and Net price
- Return valve
- YES
- Rubber
- EPDM
- Selected liquid temperature
- 68 °F
- Size of inlet connection
- 1
- Size of outlet connection
- 1
- Standard
- ISO 228-1
- Start pressure
- PM2
- Tank volume
- NONE l
- Type of inlet connection
- Rp
- Type of outlet connection
- G
- Valve
- YES
Dimensional Drawing
Wiring Diagram