Metering pump

摘要

In order to enable a conveying from a vacuum into a vacuum when metering liquid components of reaction resin compounds, a metering pump comprising a reciprocating displacement member is employed wherein the intake valve and the discharge valve are fashioned as dish valves controllable from the outside in constrained fashioned including valve stems coaxially seated in the pump head. No noteworthy wear of the valves occurs even when metering liquid components of reaction resin compounds having abrasive fillers.