Pro-fit IMP-A-100 Circulator Pump Impeller 2.75 in

Product Description

The PRO-FIT IMP-A-100 is a replacement impeller designed for use in circulator pumps found in hydronic heating and cooling systems. Measuring 2.75 inches in length, it is constructed from composite Noryl material and features an integrally molded brass key insert that reinforces the connection point and resists wear under continuous pump operation. This impeller is engineered to match original equipment performance curves, making it a direct-fit replacement suitable for restoring circulator pump output without retesting system flow. Licensed HVAC technicians and plumbers handling hydronic system service are the primary installers.

This impeller is suited for both open and closed hydronic system applications, including residential and light commercial heating loops. Its performance curve match makes it applicable in scenarios where the original impeller has worn or failed and a like-for-like replacement is needed to maintain system GPM and head pressure. The composite Noryl construction handles the thermal and chemical demands typical of circulating hot or chilled water loops.

Key Features

• Composite Noryl construction resists heat, corrosion, and chemical exposure in hydronic systems
• Integrally molded brass key insert adds mechanical strength at the shaft interface
• Engineered to match Bell and Gossett and Armstrong original performance curves
• Compatible with both open and closed hydronic system configurations
• 2.75-inch length provides direct dimensional replacement fitment

Compatibility

Designed to match original performance curves for Bell and Gossett and Armstrong circulator pumps. Verify impeller size and pump model before installation to confirm fitment.

Installation Notes

Installation should be performed by a licensed plumber or HVAC technician. Shut off power to the circulator pump and isolate the pump from system pressure before disassembly. Ensure the shaft key and keyway are clean and undamaged before seating the new impeller. Follow the pump manufacturer's reassembly sequence and confirm proper rotation direction before returning the system to service.

Technical Specifications

• Item Type: Impeller
• Length: 2.75 inches
• Material: Composite Noryl with Brass Key Insert
• Application: Circulator Pump, Open or Closed System

Standard Information

• Brand: PRO-FIT
• Manufacturer Part Number: IMP-A-100