High Flow FA Max for larger commercial and residential systems. Complete solar control system inlcudeing solar working station with drain fill valves and shut off isolation valves. Patented air scope, flow meter, pressure release valve, pressure guage, temperature guage. High Flow Wilo Star31 3-speed pump included. Qualitly brass components are high temperature rated. Note: Requires RESOL controller - 1" connections Price: $3,000.00CAD