Pro-fit COU-D-100 Water Circulation Pump Coupler

Product Description

The PRO-FIT COU-D-100 is a heavy-duty flexible coupler designed for water circulation pump applications. Cast from zinc with steel-reinforced eyelets, it transfers rotational force between the motor shaft and pump impeller while absorbing vibration and minor shaft misalignment. The integrated heavy-duty spring element allows multiple configuration options, making it a practical replacement component for service technicians working on hydronic heating systems, domestic hot water recirculation loops, and similar pump-driven plumbing circuits.

This coupler is suited for residential and light commercial water circulation pump installations. It is typically installed during pump motor replacement, pump rebuild service, or when an existing coupler shows signs of wear, cracking, or spring fatigue. Plumbers and HVAC technicians handling hydronic system repairs are the primary installers of this component.

Key Features

• Cast zinc construction for durability in wet mechanical environments
• Steel-reinforced eyelets extend service life under repeated torque cycling
• Heavy-duty spring design absorbs vibration and accommodates minor shaft misalignment
• Flexible coupler kit format supports several installation configurations

Compatibility

Designed as an OEM-style replacement coupler for water circulation pumps in residential and light commercial hydronic or recirculation plumbing systems.

Installation Notes

Installation should be performed by a licensed plumber or qualified HVAC technician. Shut off power to the pump motor and isolate the system before disassembly. Inspect motor and pump shafts for wear or corrosion before seating the new coupler. Verify shaft alignment after installation to prevent premature coupler wear.

Technical Specifications

• Item Type: Coupler
• Used On: Water Circulation Pump
• Construction: Cast Zinc with Steel-Reinforced Eyelets
• Coupler Style: Heavy-Duty Flexible Spring

Standard Information

• Brand: PRO-FIT
• Manufacturer Part Number: COU-D-100