Bell & Gossett 5/8" x 5/8" coupler for PD-38, PD-39, and PD-40 booster pumps. A broken coupler indicates that the motor mounts have lost their resiliency and the motor shaft and pump shaft are now out of alignment. It is recommended to replace the motor mounts when the pump coupling breaks.
Bell & Gossett, a unit of ITT Industries, is a leading manufacturer of energy efficient pumps, valves, heat exchangers, and accessories for plumbing, wastewater, and HVAC — including steam and heat transfer — applications. The company sells a variety of products, including centrifugal pumps, hydronic specialties, heat exchangers, condensate handling equipment, valves, rotors and controllers, for use in residential, commercial and institutional buildings. Bell & Gossett is known throughout the HVAC business as the industry’s educator. Their Little Red Schoolhouse, a completely equipped learning center, has trained more than 60,000 engineers, contractors and installers in the proper design, installation, and maintenance of HVAC systems.