Lead-free bronze or stainless steel (pump casing), ceramic (pump shaft and bearings), PEI (impeller), EPDM (bearing seals)

The Armstrong Astro 2 hot water re-circulation system automatically circulates water through domestic water pipes. This ensures that hot water is available instantly at every tap throughout a residence. From a cost and environmental point of view, far less water is wasted each time a hot water faucet is opened – saving an average of 12,000 gallons of water annually for a typical four-person household. Ideal for retrofit applications.

We have a suite of free online support materials and tools. Find the essentials to learn, apply, and maintain Armstrong equipment.

We use cookies and other tracking technologies to improve your browsing experience on our website, to show you personalized content and targeted ads, to analyze our website traffic, and to understand where our visitors are coming from.

We are happy to help. Discuss your project and product needs with us, check the status of your shipments, or let us save the day in an emergency.