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ARMSTRONG Circulating Pump Coupler: Mfr Part # 816665-000, Cast Iron - Motor Couplers for Circulator Pumps
ARMSTRONGMotor Couplers for Circulator Pumps

ARMSTRONG Circulating Pump Coupler: Mfr Part # 816665-000, Cast Iron

The ARMSTRONG Circulating Pump Coupler, Mfr Part # 816665-000, is a cast-iron motor coupler for circulator pumps. It features 18 splines and is compatible with Armstrong S-69 series pumps and model 116516LF-137A.

SKU 3G-OTH-83526

Brand
ARMSTRONG
Item
Circulating Pump Coupler: Mfr Part # 816665-000, Cast Iron
Category
Motor Couplers for Circulator Pumps
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Technical Specifications

ARMSTRONG
Manufacturer Part Number
816665-000
Coupling Material
Cast Iron
Compatible with Brand
Armstrong
Compatible with Series
S-69
Compatible with Grainger Part Number
422W76
Compatible with Manufacturer Model Number
116516LF-137A
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ARMSTRONG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The ARMSTRONG Circulating Pump Coupler, Mfr Part # 816665-000, is a cast-iron motor coupler for circulator pumps. It features 18 splines and is compatible with Armstrong S-69 series pumps and model 116516LF-137A.

Frequently Asked Questions

What is the ARMSTRONG Circulating Pump Coupler used for?

This cast-iron coupler connects the motor to the pump shaft in Armstrong S-69 series circulator pumps, transmitting torque to move water in hydronic heating and cooling systems. It is a direct replacement for model 116516LF-137A.

What are the specifications of the ARMSTRONG 816665-000 coupler?

The ARMSTRONG 816665-000 coupler is made of cast iron with 18 splines. It is compatible with Armstrong S-69 series pumps and model 116516LF-137A. The manufacturer part number is 816665-000.

Where to buy the ARMSTRONG 816665-000 coupler worldwide?

3G Electric supplies the ARMSTRONG 816665-000 coupler worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on this cast-iron pump coupler.

How to install the ARMSTRONG 816665-000 coupler?

To install, disconnect power, remove the old coupler, align the 18 splines with the motor and pump shafts, and slide the new cast-iron coupler into place. Ensure proper alignment to avoid vibration. Follow Armstrong pump service guidelines.

Used in

Common applications for ARMSTRONG
Hydronic heating systems — ARMSTRONG general-purpose inline circulator pump 182202-657 for potable water circulation
Pump motor replacement — ARMSTRONG pump motor 817025-007 for S&H 4-Series circulator pumps
Flange installation on E32.2HT pumps — ARMSTRONG flange hardware kit 810120-353K with steel bolts and rubber gaskets
Bearing replacement in H-32 series pumps — ARMSTRONG bearing assembly 816549MF-091 for in-line circulating pumps
Piping system connections — ARMSTRONG standard flanges 806074-621k for H-6 6 model with stainless steel and EPDM
Retrofit of pump flanges — ARMSTRONG flange 561100LF-001 for ASTRO EXPRESS 2 SYSTEM union-type connections

ARMSTRONG Products

3G Electric supplies ARMSTRONG 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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