Water Softener System, Twin Tank, CES-9100TS E-30C, capacity: 35,000 grains @ 15.0 lbs. salt, 14,457 grains @ 3.0 lbs. salt, 8 GPM service flow rate continuous, Pentair Fleck 9100TS meter-initiated control valve monitors water usage, 120v/50/60/1-ph, Inlet and Outlet Connections ¾” FNPT, NSF 44 (EV998065)