Description
The Grundfos 92560303 (NBS 030-070/6.30 AASG6S2ESBQQEQX2) is a End-Suction Close-Coupled Pump — ANSI/NEMA. Split-coupled end-suction pumps with NEMA standard motors and ANSI flange fittings for North American HVAC and industrial applications. Nominal performance: 672US gpm at 133.6ft. Rated 230/460V, 3.0-Phase, 60 Hz. Applications include HVAC: Heating.
ANSI/NEMA for North American Systems
NBS uses NEMA frame motors and ANSI 150# flanges — the standard for US and Canadian HVAC, water, and industrial systems. Direct replacement for existing ANSI pumps.
Back Pull-Out Design
The rotating element pulls out from the back without disturbing the pump casing or piping. Reduces maintenance downtime to minutes, not hours.
Close-Coupled — No Alignment
Motor and pump share one shaft. No coupling alignment on installation or after service. Reduces vibration and bearing wear.
Wide HP Range
NBS covers 1.5 HP through 75 HP in a single series. One spare impeller kit covers multiple pump sizes in the same installation.
Cast Iron or Stainless Options
Casing and impeller available in cast iron, bronze, or stainless depending on application. Specify material to match your system fluid.
Authorized Distributor — Full Warranty
PumpStop is an authorized Grundfos distributor. All NBS pumps ship with full Grundfos warranty and US technical support.
| Model Number | 92560303 |
| Product Series | NBS |
| Series Description | End-Suction Close-Coupled Pump — ANSI/NEMA |
| Power | 30HP |
| Voltage | 230/460V |
| Phase | 3.0-Phase |
| Frequency | 60 Hz |
| Motor Speed | 3530rpm |
| Full Load Current | 66-33A |
| Motor Efficiency Class | IE3 / NEMA Premium |
| Motor Efficiency | 91.7% |
| Protection Class (IP) | TEFC |
| Nominal Flow | 672US gpm |
| Nominal Head | 133.6ft |
| Max Operating Pressure | 174.05psi |
| Max Fluid Temperature | 248°F |
| Max Ambient Temperature | 104°F |
| Inlet Connection | 4inch |
| Outlet Connection | 3inch |
| Pipe Pressure Rating | Class 125 |
| Pipe Standard | ANSI |
| Impeller Material | Stainless steel |
| Housing Material | Cast iron |
| Shaft Seal | BQQE |
| Electrical | Verify supply voltage, phase, and frequency match nameplate before installation: 230/460V, 3.0-Phase, 60 Hz. |
| Temperature limits | Do not exceed max fluid temperature 248°F or max ambient temperature 104°F. Exceeding limits damages seals and motor insulation. |
| Dry running | Do not run dry. NBS 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
- 5715116271675
- Actual impeller diameter
- 6.3 in
- Density
- 62.29 lb/ft³
- Diameter
- 6.3 in
- Gross weight
- 577.0 lb
- Liquid temperature range
- -13 .. 248 °F
- Material Pricing Group
- 5Y
- Max. capacity 2
- ,
- Maximum ambient temperature
- 104 °F
- Net weight
- 577.0 lb
- Rated flow
- 672 US gpm
- Rated head
- 133.6 ft
- Real Time
- Delivery date to be confirmed on Sales Order Update with real time availability and Net price
- Selected liquid temperature
- 68 °F
Dimensional Drawing