WVK，WVM Progressive divider is a block type , its outlets is arranged in tow flanks ,3pairs the least .A hole between the two outlets in a pair is plugged by screw at ordinary times . Take off this screw , and plug one of the outlet ports , then the output increasing from another one . Two adjacent outlets of same side can crosslink each other , then oil output increasing from front port to back port . The measure of screw and crosslink can make tow outlets at least of a divider.

Appearance and dimensions