* 1" Filter and Softener Control Valves * Features Autotrol 263, 268 * Autotrol 263 is a filter valve, Autotrol 268 is a softener valve * Performa means performance – large 1" ports for high-flow applications * Valve quickly changes from softener to filter application in three easy steps * Autotrol 263, 268 designed with fewer service parts than any valve of comparable function – longer life, shorter service calls