POWER BEYOND/CLOSED CENTER CONVERSION SLEEVE Brand new, power beyond sleeve for use with WOLVERINE by PRINCE WVS series valves. Power beyond sleeve is necessary to convert WOLVERINE WVS valves to closed center. Power Beyond Allows oil flow to a down-stream valve while first valve is in neutral position. Outlet port of first valve must be plumbed directly to reservoir. Closed Center Conversion Convert to closed center by inserting the power beyond sleeve into the side outlet port and inserting the steel plug into the top outlet port.