ASTRO 2 WET ROTOR CIRCULATOR

The Astro 2 is a hydronic circulator that conserves energy and eliminates maintenance
Armstrong’s Astro 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
Armstrong 3-speed circulator provides unmatched performance over a wide range of head and flow requirements
The 3-speed design allows users to match the requirements of an installation exactly
Features EfficientQuiet operation
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
Reduced installation costs
Includes a removable check valve that eliminates the need for additional check valves in the system
For replacement installations, the check valve can be removed as required
International code compliance
Astro 2 units are ETL listed for the U.S. and Canada and conform to UL std 778 and Canadian electrical safety standards CSA std C222 No 108-01
Technical data Flow range 0 to 18 USgpm (0 to 114 Ls), Head range 0 to 24 ft (0 to 732 m), Motor 115V, 60Hz, single-phase, Max fluid temperature Closed system, 230F (110C)*, Max working pressure 150 psi (1034 kPa)
LIMITED LIFETIME HEAT EXCHANGER AND 10-YEAR LIMITED PARTS
WARRANTY* 10-YEAR UNIT REPLACEMENT LIMITED WARRANTY*