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ARMSTRONG Hydronic Circulating Pump: 1/16 hp HP, 115V AC, Cast Iron, Variable, 20 gpm - Intelligent Inline Circulator Pumps
ARMSTRONGIntelligent Inline Circulator Pumps

ARMSTRONG Hydronic Circulating Pump: 1/16 hp HP, 115V AC, Cast Iron, Variable, 20 gpm

The ARMSTRONG Hydronic Circulating Pump (SKU 180203-686, MPN 180203-686) is an intelligent inline circulator pump designed for hydronic systems. It features a 1/16 hp motor, 115V AC nameplate voltage, and a flange…

SKU 3G-OTH-84395

Also listed as: 180203686 · 180203 686

Brand
ARMSTRONG
Item
Hydronic Circulating Pump: 1/16 hp HP, 115V AC, Cast Iron, Variable, 20 gpm
Category
Intelligent Inline Circulator Pumps
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

ARMSTRONG
Manufacturer Part Number
180203-686
Type
Cast Iron, Variable, 20 gpm, Inline
AC
115V
Max. Head
20 ft
System Type
Hydronic
Connection Type
Flange
Includes Volute
No Volute Included
Nameplate Voltage
115V AC

Technical Documents

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ARMSTRONG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The ARMSTRONG Hydronic Circulating Pump (SKU 180203-686, MPN 180203-686) is an intelligent inline circulator pump designed for hydronic systems. It features a 1/16 hp motor, 115V AC nameplate voltage, and a flange connection type, with no volute included. The pump delivers 20 gpm at 20 ft max head and is constructed with cast iron.

Frequently Asked Questions

What is the ARMSTRONG Hydronic Circulating Pump used for?

The ARMSTRONG Hydronic Circulating Pump is used in hydronic heating and cooling systems to circulate water through pipes, radiators, or underfloor loops. Its 1/16 hp motor and 20 gpm flow at 20 ft max head suit residential and light commercial applications.

What are the specifications of the ARMSTRONG 180203-686 pump?

The ARMSTRONG 180203-686 is a 1/16 hp, 115V AC intelligent inline circulator with cast iron construction. It delivers 20 gpm at 20 ft max head, uses a flange connection, and has no volute included. It is designed for hydronic systems.

Where to buy the ARMSTRONG Hydronic Circulating Pump worldwide?

3G Electric supplies the ARMSTRONG Hydronic Circulating Pump (SKU 3G-OTH-84395) to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this pump.

How to install an ARMSTRONG inline circulator pump?

Install the ARMSTRONG inline circulator pump with the shaft horizontal and electrical connections to 115V AC per local codes. Ensure proper flange gaskets and support piping. Follow the manufacturer's manual for wiring and system purging to avoid air locks.

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 intelligent inline 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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Cross-referenced by specification & description
Hydronic Circulating Pump: 1/6 hp HP, 120V AC, Cast Iron, 1, 42 gpm, 28 ft Max. Head, Inline (MPN 182202-649)
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Hydronic Circulating Pump: 1/8 hp HP, 115V AC, Cast Iron, 3, 18 gpm, 18 ft Max. Head, Inline (MPN 110223-305)
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Hydronic Circulating Pump: 5/16 hp HP, 115V AC, Cast Iron, 3, 32 gpm, 31 ft Max. Head, Inline (MPN 110223-320)
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Hydronic Circulating Pump: 5/16 hp HP, 115V AC, Cast Iron, 3, 32 gpm, 31 ft Max. Head, Inline (MPN 110223-320)
Hydronic Circulating Pump: 5/16 hp HP, 230V AC, Cast Iron, 3, 32 gpm, 31 ft Max. Head, Inline (MPN 110223-322)
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Hydronic Circulating Pump: 5/16 hp HP, 230V AC, Cast Iron, 3, 32 gpm, 31 ft Max. Head, Inline (MPN 110223-322)
Hydronic Circulating Pump: 5/16 hp HP, 115V AC, Cast Iron, 3, 64 gpm, 14 ft Max. Head, Inline (MPN 110223-328)
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Hydronic Circulating Pump: 5/16 hp HP, 115V AC, Cast Iron, 3, 64 gpm, 14 ft Max. Head, Inline (MPN 110223-328)
Circulating Pump: 1/8 hp HP, 115V AC, Stainless Steel, 3, 18 gpm, 18 ft Max. Head, Inline (MPN 110223-306)
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Circulating Pump: 1/8 hp HP, 115V AC, Stainless Steel, 3, 18 gpm, 18 ft Max. Head, Inline (MPN 110223-306)

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