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ARMSTRONG Hydronic Circulating Pump: 1/10 hp HP, 115V AC, Cast Iron, Variable, 20 gpm - Intelligent Inline Circulator Pumps
ARMSTRONGIntelligent Inline Circulator Pumps

ARMSTRONG Hydronic Circulating Pump: 1/10 hp HP, 115V AC, Cast Iron, Variable, 20 gpm

The ARMSTRONG Hydronic Circulating Pump (1/10 hp HP) is an intelligent inline circulator pump designed for potable water systems. It operates at 115V AC with a flange connection, delivering 20 gpm flow and 20 ft max…

SKU 3G-OTH-84402

Also listed as: 180203687 · 180203 687

Brand
ARMSTRONG
Item
Hydronic Circulating Pump: 1/10 hp HP, 115V AC, Cast Iron, Variable, 20 gpm
Category
Intelligent Inline Circulator Pumps
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

ARMSTRONG
Manufacturer Part Number
180203-687
Type
Cast Iron, Variable, 20 gpm, Inline
AC
115V
Max. Head
20 ft
System Type
Potable Water
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 (1/10 hp HP) is an intelligent inline circulator pump designed for potable water systems. It operates at 115V AC with a flange connection, delivering 20 gpm flow and 20 ft max. head in a cast iron, variable-speed configuration (MPN 180203-687). This unit does not include a volute.

Frequently Asked Questions

What is the ARMSTRONG 180203-687 hydronic circulating pump used for?

The ARMSTRONG 180203-687 is an intelligent inline circulator pump designed for potable water systems. It delivers 20 gpm flow at 20 ft max. head, making it suitable for hydronic heating and domestic water recirculation in commercial or residential buildings.

What are the specifications of the ARMSTRONG 180203-687 pump?

This ARMSTRONG pump has a 1/10 hp motor, 115V AC, cast iron construction, variable-speed operation, flange connection, and delivers 20 gpm at 20 ft max. head. It is designed for potable water systems and does not include a volute.

Where to buy the ARMSTRONG 180203-687 pump worldwide?

3G Electric supplies the ARMSTRONG 180203-687 hydronic circulating pump to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this intelligent inline circulator.

How to select the right ARMSTRONG inline circulator pump?

Select based on system flow (gpm) and head (ft) requirements. The ARMSTRONG 180203-687 offers variable-speed operation for potable water at 115V AC. Confirm flange connection compatibility and cast iron material suitability for your hydronic system. Consult a pump specialist for sizing.

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
Hydronic Circulating Pump: 1/6 hp HP, 120V AC, Cast Iron, 1, 32 gpm, 29 ft Max. Head, Inline (MPN 182202-643)
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Hydronic Circulating Pump: 1/6 hp HP, 120V AC, Cast Iron, 1, 40 gpm, 43 ft Max. Head, Inline (MPN 182202-659)
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Hydronic Circulating Pump: 1/6 hp HP, 120V AC, Cast Iron, 1, 40 gpm, 43 ft Max. Head, Inline (MPN 182202-659)
Hydronic Circulating Pump: 1/5 hp HP, 115V AC, Cast Iron, 3, 18 gpm, 24 ft Max. Head, Inline (MPN 110223-307)
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Hydronic Circulating Pump: 1/5 hp HP, 115V AC, Cast Iron, 3, 18 gpm, 24 ft Max. Head, Inline (MPN 110223-307)
Hydronic Circulating Pump: 1/6 hp HP, 120V AC, Cast Iron, 1, 43 gpm, 32 ft Max. Head, Inline (MPN 182202-651)
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Hydronic Circulating Pump: 1/6 hp HP, 120V AC, Cast Iron, 1, 43 gpm, 32 ft Max. Head, Inline (MPN 182202-651)
Hydronic Circulating Pump: 1/6 hp HP, 240V AC, Cast Iron, 1, 38 gpm, 34 ft Max. Head, Inline (MPN 182202-645)
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Hydronic Circulating Pump: 1/6 hp HP, 240V AC, Cast Iron, 1, 38 gpm, 34 ft Max. Head, Inline (MPN 182202-645)
Hydronic Circulating Pump: 1/4 hp HP, 115V AC, Cast Iron, 1, 44 gpm, 25 ft Max. Head, Inline (MPN 116431MF-132)
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Hydronic Circulating Pump: 1/4 hp HP, 115V AC, Cast Iron, 1, 44 gpm, 25 ft Max. Head, Inline (MPN 116431MF-132)

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