Product Description
A hydronic circulator that conserves energy and eliminates maintenance. Armstrong's Astro 2 Circulator is intended for circulating water or ethylene glycol solutions in closed hydronic or solar heating systems. It is designed with no mechanical seals or couplers to replace, and no lubrication is required.
***Rubber gaskets included with pump***
Typical Applications
Closed hydronic systems
Solar heating systems
Domestic water and open system heating applications
Performance Data
- Flow Range: 0-18 GPM
- Head Range: 0-24 Feet
- Minimum Fluid Temperature: 36 degrees F (2 degrees C)
- Maximum Fluid Temperature: 230 degrees F (110 degrees C)
- Connection Sizes: Flanged
Features
- Stainless steel body construction
- Ceramic shaft and bearings
- Cross-reference information is printed on the box, for convenient access
- E-coating on the inside of cast-iron volutes provides enhanced corrosion protection for improved reliability
- Flange-to-flange and bolt-to-bolt compatibility offers quick and easy exchange of competing models
- Plug-in terminal strip saves time
- High-flow check valve, is pre-installed for convenience. Where the installation does not call for a check valve, it can be removed in seconds
- Certified <0.25 weighted average percent lead (NSF 372) and complies with California Health and Safety code section 116875 (commonly known as AB1953)
Armstrong Astro 50 3 speed Stainless Steel circulating pump ***NEW***
The Armstrong Astro 250SS Stainless Steel 115v 3-speed Hot Water Circulating Pump is an easy way to circulate liquids in a closed circuit.
This water circulation pump is extra-quiet and was created for use in residential, commercial, hospital or educational institutions.
Additional features and specifications:
- 3-speeds for use in multiple applications
- Stainless steel construction
- Removable integral check valve
- Flanged connection
- 115 volt
- 0-18 GPM flow rate
- 0-22 feet head range
- Maximum temperature 230F
- Used in domestic water and open system heating applications
Design Features:
Features
- Efficient/Quiet Operation
- Universal Flange to Flange Dimension
- Cast Iron or Stainless Construction
- UL and CSA Listed
Benefits
- No mechanical seals to leak
- No couplers to break
- No lubrication
- Noryl impeller
- Vent plug for initial purging if required
- Stainless Steel shaft
- Ethylene Propylene gaskets
- Impedance protected motor
This model is a replacement for Bell & Gossett NRF25, Grundfos UPS 15-55SFC, Wilo Star S 21BFX, and Taco 009-F5
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