Pump Distributor Head

By 30 March 2017

The distributor plunger, the distributor head bushing and the control collar are so precisely fitted (lapped) into the distributor head, that they seal even at very high pressures. Small leakage losses are nevertheless unavoidable, as well as being desirable for plunger lubrication. For this reason, the distributor head is only to be replaced as a complete assembly, and never the plunger, control collar, or distributor flange alone.