Bell & Gossett 622S Series 60 Centrifugal Pump

B&G 172757LF Series 60 Model 622S Pump

The Bell & Gossett 172757LF (Series 60, Model 622S) is a specialized Lead-Free (LF) three-piece centrifugal circulator engineered to facilitate high-head fluid distribution in commercial infrastructures. Its robust in-line volute is calibrated to sustain increased system pressures, while the signature three-piece architecture facilitates ease of service by allowing the motor and bearing assembly to be removed without disturbing pipe connections. By prioritizing a lead-free hydraulic path, this unit facilitates consistent thermal exchange and maintains structural stability, ensuring that domestic hot water or heating loops receive reliable pressure delivery even in multi-story applications.

Driven by a quiet-operating Single Phase (S) motor, the 172757LF executes precise torque delivery via a dedicated bearing frame assembly. The motor is physically isolated from the pump body to neutralize heat transfer, protecting internal electrical components from thermal degradation. By leveraging a precision-ground shaft and a flexible spring-loaded coupling, this configuration minimizes mechanical vibration and stabilizes rotational frequency, providing extreme reliability for continuous-duty commercial circulation service.

Key Features of B&G 172757LF 622S

• Lead-Free construction for safe potable water distribution
• Quiet Single Phase motor optimized for commercial comfort
• Practical 3-piece design facilitates quick in-line maintenance
• Superior spring coupling prevents motor-to-shaft fatigue
• Durable body resists oxidative corrosion and mineral scaling
• High-head capacity optimized for vertical distribution
• Versatile application for commercial DHW and hydronic heating