Description
• The Armstrong Pump Astro 2 220SSU is a variable three-speed, single-phase stainless steel circulator pump for residential heating and cooling with a 1/2" sweat connection.
• Astro 2 pumps have a flow rate of up to 64 GPM, a maximum of 42 feet of head, ceramic bearings and shaft, and a Noryl impeller.
• An e-coating on the inside of cast-iron volutes provides enhanced corrosion protection for improved reliability.
• A high-flow check valve is pre-installed for convenience. However, it can be removed in seconds when the installation does not call for a check valve.
• Connection Type: Sweat
• Connection Size: 1/2"
• Motor Speed: 3
• Motor RPM: Variable
• Working Pressure 150 psi
• Max Temp: 110 C