This Bell & Gossett Pump Coupler is a spring type counter clockwise rotation coupler with a ½" x ½" shaft that fits the following circulating pump models: B&G Unit: Series 75-150, 1", 1-1/4", 1-1/2", 2" HV, 4RD16, 4RD17, 4RC91 to 96. The coupler is the most common part that needs to be replaced on a pump. It is constructed of cast iron. In comparison to EC Part #57808, this coupler is used on higher horsepower pumps. This spring coupler is Bell & Gossett model 118705.
EC Part Number: #44983
Manufacturer Number: 118705
Manufacturer: B&G