We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

ARMSTRONG Hydronic Circulating Pump: 5/16 hp HP, 115V AC, Cast Iron, 3, 32 gpm, 31 ft Max. Head - General-Purpose Inline Circulator Pumps
ARMSTRONGGeneral-Purpose Inline Circulator Pumps

ARMSTRONG Hydronic Circulating Pump: 5/16 hp HP, 115V AC, Cast Iron, 3, 32 gpm, 31 ft Max. Head

The ARMSTRONG Hydronic Circulating Pump (5/16 hp HP) is a general-purpose inline circulator pump designed for hydronic systems. It features a 115V AC nameplate voltage, flange connections, and a cast iron…

SKU 3G-OTH-83008

Also listed as: 110223320 · 110223 320

Brand
ARMSTRONG
Item
Hydronic Circulating Pump: 5/16 hp HP, 115V AC, Cast Iron, 3, 32 gpm, 31 ft Max. Head
Category
General-Purpose Inline Circulator Pumps
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

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
110223-320
Type
Cast Iron, 3, 32 gpm, Inline
AC
115V
Max. Head
31 ft
System Type
Hydronic
Connection Type
Flange
Includes Volute
No Volute Included
Nameplate Voltage
115V AC

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The ARMSTRONG Hydronic Circulating Pump (5/16 hp HP) is a general-purpose inline circulator pump designed for hydronic systems. It features a 115V AC nameplate voltage, flange connections, and a cast iron construction, delivering 32 gpm at 31 ft max. head. This model (MPN 110223-320) does not include a volute.

Frequently Asked Questions

What is the ARMSTRONG Hydronic Circulating Pump used for?

The ARMSTRONG Hydronic Circulating Pump is used to circulate hot water or chilled water in closed-loop hydronic heating and cooling systems. Common applications include commercial HVAC, radiant floor heating, and boiler systems. It moves water through pipes to maintain consistent temperature distribution in buildings.

What are the specifications of the ARMSTRONG Hydronic Circulating Pump 110223-320?

This ARMSTRONG pump has a 5/16 hp motor, 115V AC voltage, and delivers 32 gpm at 31 ft max. head. It features cast iron construction with flange connections and is designed for hydronic systems. The model (MPN 110223-320) does not include a volute.

Where to buy the ARMSTRONG Hydronic Circulating Pump worldwide?

You can source the ARMSTRONG Hydronic Circulating Pump (MPN 110223-320) through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.

How to install the ARMSTRONG Hydronic Circulating Pump?

Install the ARMSTRONG pump inline with the piping, ensuring flange connections are properly aligned and gasketed. Verify the 115V AC power supply matches the nameplate. Follow standard hydronic pump installation practices: isolate the pump with valves, and ensure proper support for the cast iron body.

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 general-purpose inline circulator pumps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Pump Accessories Valves & Regulation Motors & Drives All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
Hydronic Circulating Pump: 5/16 hp HP, 230V AC, Cast Iron, 3, 32 gpm, 31 ft Max. Head, Inline (MPN 110223-322)
ARMSTRONG
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)
ARMSTRONG
Hydronic Circulating Pump: 5/16 hp HP, 115V AC, Cast Iron, 3, 64 gpm, 14 ft Max. Head, Inline (MPN 110223-328)
Hydronic Circulating Pump: 1/8 hp HP, 115V AC, Cast Iron, 3, 18 gpm, 18 ft Max. Head, Inline (MPN 110223-305)
ARMSTRONG
Hydronic Circulating Pump: 1/8 hp HP, 115V AC, Cast Iron, 3, 18 gpm, 18 ft Max. Head, Inline (MPN 110223-305)
Circulating Pump: 5/16 hp HP, 115V AC, Stainless Steel, 3, 64 gpm, 14 ft Max. Head, Inline (MPN 110223-329)
ARMSTRONG
Circulating Pump: 5/16 hp HP, 115V AC, Stainless Steel, 3, 64 gpm, 14 ft Max. Head, Inline (MPN 110223-329)
Circulating Pump: 5/16 hp HP, 230V AC, Stainless Steel, 3, 31 gpm, 31 ft Max. Head, Inline (MPN 110223-323)
ARMSTRONG
Circulating Pump: 5/16 hp HP, 230V AC, Stainless Steel, 3, 31 gpm, 31 ft Max. Head, Inline (MPN 110223-323)
Circulating Pump: 1/6 hp HP, 115V AC, Stainless Steel, 3, 18 gpm, 24 ft Max. Head, Inline (MPN 110223-308)
ARMSTRONG
Circulating Pump: 1/6 hp HP, 115V AC, Stainless Steel, 3, 18 gpm, 24 ft Max. Head, Inline (MPN 110223-308)

More from ARMSTRONG

View all ARMSTRONG parts
ARMSTRONG
ARMSTRONG
HVAC Circulating Pump: 1/25 hp HP, 120V AC, Stainless Steel, 3, 38 gpm, 18 ft Max. Head, Inline (MPN 110223-326)
Hydronic Circulating Pump: 2/5 hp HP, 120V AC, Cast Iron, 1, 128 gpm, 22 ft Max. Head, Inline (MPN 182212-645)
ARMSTRONG
Hydronic Circulating Pump: 2/5 hp HP, 120V AC, Cast Iron, 1, 128 gpm, 22 ft Max. Head, Inline (MPN 182212-645)
Hydronic Circulating Pump: 1/6 hp HP, 120V AC, Cast Iron, 1, 43 gpm, 32 ft Max. Head, Inline (MPN 182202-651)
ARMSTRONG
Hydronic Circulating Pump: 1/6 hp HP, 120V AC, Cast Iron, 1, 43 gpm, 32 ft Max. Head, Inline (MPN 182202-651)
Circulating Pump: 1/25 hp HP, 120V AC, Stainless Steel, 3, 10 gpm, 5 ft Max. Head, 6 in Face to Face (MPN 110223B-241)
ARMSTRONG
Circulating Pump: 1/25 hp HP, 120V AC, Stainless Steel, 3, 10 gpm, 5 ft Max. Head, 6 in Face to Face (MPN 110223B-241)
Hydronic Circulating Pump: 2/5 hp HP, 120V AC, Cast Iron, 1, 142 gpm, 26 ft Max. Head, Inline (MPN 182212-669)
ARMSTRONG
Hydronic Circulating Pump: 2/5 hp HP, 120V AC, Cast Iron, 1, 142 gpm, 26 ft Max. Head, Inline (MPN 182212-669)
Circulating Pump: 1/6 hp HP, 120V AC, Bronze, 1, 40 gpm, 43 ft Max. Head, 6 13/32 in Face to Face (MPN 182202-660)
ARMSTRONG
Circulating Pump: 1/6 hp HP, 120V AC, Bronze, 1, 40 gpm, 43 ft Max. Head, 6 13/32 in Face to Face (MPN 182202-660)
Hydronic Circulating Pump: 1/6 hp HP, 120V AC, Cast Iron, 1, 42 gpm, 28 ft Max. Head, Inline (MPN 182202-649)
ARMSTRONG
Hydronic Circulating Pump: 1/6 hp HP, 120V AC, Cast Iron, 1, 42 gpm, 28 ft Max. Head, Inline (MPN 182202-649)
Circulating Pump: 5/16 hp HP, 115V AC, Stainless Steel, 3, 31 gpm, 31 ft Max. Head, Inline (MPN 110223-321)
ARMSTRONG
Circulating Pump: 5/16 hp HP, 115V AC, Stainless Steel, 3, 31 gpm, 31 ft Max. Head, Inline (MPN 110223-321)