A Butler Sun Solutions Exclusive Product!
The unit includes its own radiator and fluid overflow and recovery tank. Compression 3/8-inch tube fitting to the collector is on the left end. Finned Copper radiator provides for heat removal from collector if pump stops. A standard automotive radiator cap is used to vent into and recover fluid from the bottom of the fluid overflow recovery reservoir tube on the right end. A filler plug in the reservoir allows the fluid level to be checked and filled if needed.