Armstrong Astro 2 Series Re-Circulation Pumps Buyers Guide & Review
The Armstrong Astro 2 series of re-circulation pumps is designed for dedicated return in three-pipe plumbing installations. It automatically circulates water through domestic water pipes. This ensures that hot water is available instantly at every tap throughout a residence. With this recirculation pump, far less water is wasted each time a hot water faucet is opened. It saves an average of 12,000 gallons of water annually for a typical four-person household. This model comes assembled, wired, tested, and ready for installation. No electrician required for installation!
Features
- System components are compact, rugged, quiet, and reliable
- Ceramic pump shaft and bearings
- For indoor use only
- Meets building code requirements (where applicable)
- Maximum working pressure: 150 psi
- Maximum water temperature: 230°F
- 6 ft power cord, molded duplex plug with ground
- Complies with section 116875 at the California Health and Safety /Code and Vermont Act 193 (Lead content of wetted surface is 0.25% or less)
| ARMSTRONG ASTRO 2 SERIES RE-CIRCULATION PUMPS |

Armstrong Astro 2 Series Re-Circulation Pumps
Model Comparison Chart
| Model |
Connection |
HP |
Voltage |
Material of Construction |
GPM |
Max. Head |
| ASTRO 225BS050S-LC |
1/2" Sweat |
1/25 |
115 |
Bronze |
9 |
12' |
| ASTRO 225BS075S-LC |
3/4" Sweat |
1/25 |
115 |
Bronze |
9 |
12' |
| ASTRO 220SSU-LC |
1-1/4" NPSM Union |
1/25 |
115 |
Stainless Steel |
9 |
5.5' |
| ASTRO 220SSU050S-LC |
1/2" Sweat |
1/25 |
115 |
Stainless Steel |
9 |
5.5' |
| ASTRO 220SSU075S-LC |
3/4" Sweat |
1/25 |
115 |
Stainless Steel |
9 |
5.5' |
| ASTRO 225SSU-LC |
1-1/4" NPSM Union |
1/25 |
115 |
Stainless Steel |
14 |
13' |
| ASTRO 230SS-LC |
2 Bolt Flange |
1/25 |
115 |
Stainless Steel |
18 |
18' |
| ASTRO 250SS-LC |
2 Bolt Flange |
1/25 |
115 |
Stainless Steel |
18 |
24' |
| ASTRO 225BS050S-T |
1/2" Sweat |
1/25 |
115 |
Bronze |
9 |
10.5' |
| ASTRO 225BS075S-T |
3/4" Sweat |
1/25 |
115 |
Bronze |
9 |
12' |
| ASTRO 220SSU-T |
1-1/4" NPSM Union |
1/25 |
115 |
Stainless Steel |
9 |
5.5' |
| ASTRO 220SSU050S-T |
1/2" Sweat |
1/25 |
115 |
Stainless Steel |
9 |
5.5' |
| ASTRO 220SSU075S-T |
3/4" Sweat |
1/25 |
115 |
Stainless Steel |
9 |
5.5' |
| ASTRO 225BS075S-TA |
3/4" Sweat |
1/25 |
115 |
Bronze |
9 |
12' |
| ASTRO 225SSU-T |
1-1/4" NPSM Union |
1/25 |
115 |
Stainless Steel |
14 |
13' |
| ASTRO 220SSU-TA |
1-1/4" NPSM Union |
1/25 |
115 |
Stainless Steel |
9 |
5.5' |
| ASTRO 220SSU050S-TA |
1/2" Sweat |
1/25 |
115 |
Stainless Steel |
9 |
5.5' |
| ASTRO 230SS-T |
2 Bolt Flange |
1/25 |
115 |
Stainless Steel |
18 |
18' |
| ASTRO 220SSU075S-TA |
3/4" Sweat |
1/25 |
115 |
Stainless Steel |
9 |
5.5' |
| ASTRO 225SSU-TA |
1-1/4" NPSM Union |
1/25 |
115 |
Stainless Steel |
14 |
13' |
| ASTRO 225BS050S-TA |
1/2" Sweat |
1/25 |
115 |
Bronze |
9 |
12' |
| ASTRO 230SS-TA |
2 Bolt Flange |
1/25 |
115 |
Stainless Steel |
18 |
18' |
| ASTRO 250SS-T |
2 Bolt Flange |
1/25 |
115 |
Stainless Steel |
18 |
24' |
| ASTRO 250SS-TA |
2 Bolt Flange |
1/25 |
115 |
Stainless Steel |
18 |
24' |
| ASTRO Express 2 |
1-1/4" NPSM Union |
1/25 |
115 |
Stainless Steel |
9 |
6' |


| HOT WATER DISTRIBUTION WITH RE-CIRCULATION |

| MATERIALS OF CONSTRUCTION |


Pump Products application engineers are standing by to help you find the right pump, as well as to provide price quotes, stocking availability and shipping information. Call our toll free number 1-800-429-0800 to speak to an expert today.