BELLMotor Couplers for Circulator Pumps

BELL & GOSSETT Circulating Pump Coupler: Mfr Part # 118723

SKU 3G-OTH-83436

Brand

BELL

Item

& GOSSETT Circulating Pump Coupler: Mfr Part # 118723

Technical Specifications

BELL

Manufacturer Part Number

118723

Coupling Material

Cast Iron 

Compatible with Brand

Bell & Gossett 

Compatible with Series

LD3

Compatible with Grainger Part Number

4RC98 

Compatible with Manufacturer Model Number

2-1/2" AB 

View Full Spec Sheet

Technical Documents

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BELL Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

The BELL & GOSSETT Circulating Pump Coupler, part number 118723, is a cast-iron motor coupler designed for Bell & Gossett circulator pumps. It is compatible with the LD3 series and the 2-1/2" AB model, as well as Grainger part number 4RC98. This component serves as a direct replacement coupling for specified Bell & Gossett pump models.

Frequently Asked Questions

What is the BELL & GOSSETT circulating pump coupler 118723 used for?

This cast-iron coupler connects the motor shaft to the pump shaft in Bell & Gossett circulator pumps, transmitting torque for water circulation in HVAC and hydronic heating systems. It is a direct replacement for LD3 series and 2-1/2" AB model pumps.

What are the specifications of the BELL & GOSSETT pump coupler 118723?

The coupler is made of cast iron and is compatible with Bell & Gossett LD3 series and 2-1/2" AB model circulator pumps. It also matches Grainger part number 4RC98. The manufacturer part number is 118723.

Where to buy the BELL & GOSSETT 118723 coupler worldwide?

3G Electric supplies the BELL & GOSSETT 118723 coupler worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us to source this genuine Bell & Gossett replacement part.

How to install the BELL & GOSSETT 118723 pump coupler?

To install, first disconnect power and drain the system. Remove the old coupler by loosening set screws on both motor and pump shafts. Align the new cast-iron coupler, tighten set screws to manufacturer torque specs, and verify shaft alignment before restoring power.

Used in

Common applications for BELL

Hydronic heating systems — BELL & GOSSETT Series 60 circulator pump impellers (p82880) for closed-loop hot water circulation.

Commercial HVAC maintenance — BELL & GOSSETT flange hardware kits (P64910) for securing pump flanges in chiller and boiler rooms.

Industrial fluid handling — BELL & GOSSETT isolation flanges (101223LF) for isolating pumps in process piping systems.

Outdoor electrical installations — BELL weatherproof covers (5028-0) for protecting receptacles in NEMA 3R environments.

Floor box access in commercial buildings — BELL brass floor box covers (6249) for flush-mounted electrical outlets in concrete floors.

Pump repair and retrofit — BELL & GOSSETT bearing assemblies (189105LF) for in-line circulating pumps in Series PR applications.

BELL Products

3G Electric supplies BELL motor couplers for circulator pumps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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