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Bronze circulator pump with sweat connections and terminal box

Armstrong Pumps

Armstrong 110223B-140 Hot Water Circulator Pump 1/32 hp 115V 1 Phase Sweat

SKU CH-Z3SF-WV4DA

A three-speed hot-water circulator rated at 1/32 hp and 115 V single-phase with sweat connections

  • Multi-speed control matches demand with three speed settings
  • 1/32 hp motor draws only 0.29 A at 115 V
  • Sweat connections install directly on copper pipe
  • EPDM gasket suits potable water systems
  • 5 ft maximum head handles typical residential loops

Armstrong Astro 220SSU050S-TA Circulator

The Armstrong Astro 220SSU050S-TA is a hot water circulator pump built for residential potable water systems. It runs on 115V AC single-phase power and draws 0.29 A. The bronze body uses EPDM gaskets and connects via sweat fittings for a permanent copper installation. Three selectable speeds let the installer match flow to the loop length.

Upgrade From Single-Speed Bronze Pumps

Replacing a fixed-speed bronze circulator with this multi-speed model cuts electrical draw when the loop only needs low flow. The jump is worth it on long recirculation runs where a single high speed wastes energy and creates velocity noise. On very short loops with minimal friction the extra speeds may never be used.

Capacity And Headroom For Small Loops

At 1 foot of head the pump delivers 8 gpm, dropping to zero flow at 5 feet of head. This curve suits compact domestic hot water recirculation loops with low pressure drop. It will not overcome tall vertical risers or long pipe runs with many elbows; those systems need a higher-head circulator.

Highlights

  • Multi-speed control matches demand with three speed settings
  • 1/32 hp motor draws only 0.29 A at 115 V
  • Sweat connections install directly on copper pipe
  • EPDM gasket suits potable water systems
  • 5 ft maximum head handles typical residential loops

Specifications

BrandARMSTRONG

Questions about this item

What pipe size does the 1 1/4 in sweat connection on this circulator pump require?

The pump uses a 1 1/4 inch sweat connection, so it fits directly onto copper tubing of that outside diameter. No flange or union is included, so the joint is soldered to the pipe.

How do I wire the 115 V single-phase motor with its three-speed selector?

Connect the 115 V AC supply to the terminal block, then choose low, medium or high speed by moving the selector switch. The common mistake is leaving the selector on the factory setting without verifying the speed needed for the loop.

When should I plan to replace the EPDM body gasket on this Astro 220SSU050S-TA pump?

Inspect the EPDM gasket whenever the pump is opened for service or if a leak appears at the body joint. In typical potable-water circulation the gasket lasts several years; replace it at the first sign of weeping or hardening.

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