Bell & Gossett 90-34S Series 90 Centrifugal Pump 3/4HP

Support boiler-room circulation with Bell & Gossett 90-34S Series 90 centrifugal pump for medium-head commercial hydronics and secondary boiler loops. Its 3/4 HP single-phase motor accepts 115 or 208–230 volts, while the 1-1/2-inch AA configuration and 6-1/4-inch bronze impeller provide clear replacement references. The carbon/ceramic mechanical seal suits the listed arrangement. Confirm voltage, piping fit, and system curve before installation.

The 90-34S uses a Series 90 in-line centrifugal design with a 6-1/4-inch bronze impeller and standard carbon/ceramic mechanical seal. Its single-phase motor supports 115 or 208–230 volts, requiring field verification before wiring. The 1-1/2-inch AA pump size identifies the flanged connection arrangement. The supplied specifications do not state flow, head, RPM, dimensions, weight, pressure, or temperature, so verify those details against the manufacturer’s submittal.

Key Features & Benefits

• 3/4 HP Motor: Fits medium-head commercial hydronics and boiler secondary circulation.
• Single-Phase Voltage: Supports 115 or 208–230-volt service after field verification.
• 1-1/2-Inch AA Configuration: Helps compare the pump with existing hydronic piping.
• 6-1/4-Inch Bronze Impeller: Provides a defined hydraulic component for replacement review.
• Carbon/Ceramic Mechanical Seal: Identifies the supplied sealing materials for service planning.
• Series 90 In-Line Design: Targets commercial hydronic and boiler-loop circulation.

Why Choose Bell & Gossett 90-34S

The 90-34S combines a compact Series 90 layout with single-phase voltage flexibility and a bronze impeller. It suits commercial boiler rooms where medium-head circulation and existing 1-1/2-inch piping guide the replacement choice.

• Build: The bronze impeller, carbon/ceramic seal, and Series 90 arrangement define the supplied assembly.
• Value: Matching the connection and electrical service can reduce retrofit work.
• Audience: Fits boiler technicians, HVAC contractors, facility engineers, and commercial maintenance teams.

Applications & Use Cases

Use this pump in medium-head commercial hydronics and boiler secondary loops that match the manufacturer’s curve. Check the 1-1/2-inch AA flange, gasket fit, pipe alignment, valve clearance, motor access, and seal service space. Flow, head, dimensions, weight, pressure, and temperature are not supplied, so verify the installation envelope.

Warranty & Support

• Warranty Terms: Warranty duration, coverage, exclusions, and registration requirements require confirmation from the authorized seller.
• Service Requirements: Confirm whether authorized service is required for warranty claims.
• Model Verification: Match Bell & Gossett 90-34S and SKU 179044LF to the seller’s order documentation.

Verify voltage, align the piping, purge air from the boiler loop, inspect strainers, and check the carbon/ceramic seal area for leaks during startup. Select the operating point from the actual system curve. Purchase the Bell & Gossett 90-34S Series 90 centrifugal pump at Mulmotor.com for genuine equipment, applicable warranty coverage, and pump support.