Heavy-duty HVAC circulation can use the Bell & Gossett Series e-80 3 x 3 x 11B vertical in-line pump with 10 HP power, 1,750 RPM four-pole operation, 3-inch suction and discharge connections, an 11-inch nominal impeller, and an internal self-flushing mechanical seal.

The close-coupled in-line configuration supports vertical or horizontal installation where permitted by the manufacturer’s arrangement. Series e-80 documentation identifies standard operation at 225°F and 175 psig, while exact flow, head, NPSH, efficiency, voltage, and final motor frame require verification for this specific 10 HP configuration.

Key Features

- The 10 HP motor establishes the listed power class for HVAC electrical coordination.
- Operating at 1,750 RPM, the four-pole speed affects curve and motor selection.
- Three-inch suction and discharge connections support in-line piping compatibility review.
- An 11-inch nominal impeller identifies the supplied hydraulic configuration for curve verification.
- The internal self-flushing mechanical seal provides a documented sealing arrangement for service planning.
- Close-coupled construction affects equipment access, support, and replacement layout.
- Standard 225°F and 175 psig operating references establish important application boundaries.

Hydraulic Performance and Application

The Series e-80 is listed for heavy-duty HVAC and main-loop building booster service. Exact flow, head, NPSH, and efficiency data are not supplied for this 3 x 3 x 11B, so the 10 HP rating and 11-inch impeller cannot establish a guaranteed operating point.

Installation Requirements

Confirm 3-inch piping, in-line orientation, motor voltage, phase, rotation, support, seal-flushing conditions, service clearance, and operating pressure before commissioning. The selected system duty should remain within the documented 225°F and 175 psig standard limits unless an approved alternate configuration is specified.

Warranty and Maintenance

Bell & Gossett provides an 18-Month Limited Warranty from shipment or a 1-Year Limited Warranty from installation, whichever occurs first, covering material and workmanship defects. Improper installation, misuse, alteration, negligence, and operation contrary to instructions are excluded. Seal inspection and piping support remain relevant service checks. Mulmotor provides product-information support before purchase.