Bell & Gossett 118709 flexible pump coupler with 1/2" x 5/8" bore dimensions connects motor and pump shafts in base-mounted centrifugal pump applications. Designed for hydronic HVAC systems, this genuine replacement part ensures reliable power transmission and alignment in Bell & Gossett pump assemblies.

Bell & Gossett 1/2" x 5/8" coupler for PD-35, PD-37, and PD-40 booster pumps, as well as, 60 Series AA and 1522 centrifugal 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.

The 118709 Is Used On PD-35, PD-37, 60 “AA”, 1522 Pumps Where Motor Shaft Is 5/8" Diameter

Replaces Bell & Gossett P4Z-4291, P-4-Z-4291, Armstrong 806137-000

Used On:
BG_173020 Series 1522 12T-1 1HP @4-11/16 IN.
BG_173022 Series 1522 17T 1-1/2HP @3-11/16 IN.
BG_173023 Series 1522 9T-1 1-1/2HP @5-3/16 IN.
BG_173053 Series 1522 8T-1 1HP @3-5/8 IN.
BG_173055 Series 1522 16T-1 1-1/2HP @4-1/8 IN.
BG_173084 Series 1522 5S-1 1/2HP @4 IN.
BG_173085 Series 1522 5T-1 1/2HP @4 IN.
BG_173086 Series 1522 6S-1 3/4HP @3-7/8 IN.
BG_173087 Series 1522 6T-1 3/4HP @3-7/8 IN.
BG_173089 Series 1522 7S-1 3/4HP @4-3/8 IN.
BG_173100 Series 1522 7T
BG_173102 Series 1522 14S 1/3HP @3-7/16 IN.
BG_173103 Series 1522 14T 1/3HP @3-7/16 IN.
BG_173108 Series 1522 8S-1 1HP @3-5/8 IN.
BG_173110 Series 1522 9S-1 1-1/2HP @5-3/16 IN.
BG_173111 Series 1522 11T 2HP @3-15/16 IN.
BG_173112 Series 1522 12S-1 1HP @4-11/16 IN.
BG_173113 Series 1522 15T-1 2HP @5-1/4 IN.
BG_173114 Series 1522 16S-1 1-1/2HP @4-1/8 IN.
BG_173115 Series 1522 17S 1-1/2HP @3-11/16 IN.
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