Patent ID: 8038119

Claim:
A metering device, comprising: an actuator unit comprising: a housing with an actuator introduced into the housing, and a hydraulic compensation element able to be filled under pressure with a fluid, which is connected to the actuator, wherein a first end of the actuator is provided with a first end cap, a stop is arranged in the form of a seat on the housing, which is opposite the first end cap and defines a stop position for the first end cap, the stop maintains a distance between a sealing element of a valve unit and the end cap, with the distance being smaller than the stroke distance effected by the actuator so that the stroke of the actuator via the end cap is sufficient to engage the end cap with the sealing element to open the valve, and wherein with a movement of the first end cap in the direction of the hydraulic compensation element the first end cap hits the stop and this movement is blocked.