Bell & Gossett 179011LF 90-7S Pump 1 HP Motor

High-head commercial hydronics can use the Bell & Gossett 179011LF Series 90 model 90-7S with a 1 HP single-phase motor, 115 or 208 to 230 V power, 2-inch flanged connections, and a 6-1/4-inch bronze impeller.

The 175 psi working-pressure rating gives this in-line pump a defined boundary for building booster loops. Its high-head application does not establish a fixed flow or operating point, so final selection requires the system curve, required head, NPSH, temperature, and actual electrical configuration.

Key Features of Bell & Gossett 179011LF

- The 1 HP motor establishes the listed power class for commercial hydronic planning.
- Single-phase operation supports compatible electrical installations and control arrangements.
- 115 or 208 to 230 V operation requires confirmation of available supply voltage.
- A 2-inch flanged connection provides the piping reference for replacement fitment.
- The 6-1/4-inch bronze impeller identifies the supplied rotating component material.
- The 175 psi rating establishes the documented maximum working-pressure boundary.
- High-head commercial hydronics define the listed application context.

Hydraulic Performance and Application

The Series 90 90-7S is listed for high-head commercial hydronics and building booster loops. The supplied record does not state exact flow, head, NPSH, efficiency, or pump-curve values, so the 6-1/4-inch impeller and 1 HP motor cannot confirm a normal operating point.

Installation Requirements

Confirm 2-inch flange compatibility, available voltage, single-phase wiring, flow direction, rotation, mounting orientation, fluid temperature, pressure below 175 psi, and service clearance before commissioning. The selected operating point must match the manufacturer’s curve and the actual resistance of the connected hydronic loop.

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 contrary operation are excluded. Bronze impeller and motor condition remain relevant service checks. Mulmotor provides product-information support before purchase.