Patent ID: 11890630
Assignee: DüRR SYSTEMS AG
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. A paint supply system for a coating installation comprising:
a) a ring line adapted for circulation of a coating agent,
b) a ring line tapping point in the ring line adapted for extracting the coating agent from the ring line,
c) a consumer, which is supplied with the coating agent,
d) a tap line leading from the ring line tapping point to the consumer,
e) a valve arrangement, and
f) means for alternately moving the coating agent forward and backward in the tap line in order to avoid settling of the coating agent in the tap line, wherein the means for alternately moving the coating agent forward and backward in the tap line includes at least one pig line which contains a displaceable pig and leads from the valve arrangement to a pig station, and the pig station moves the displaceable pig for returning the coating agent from the at least one pig line into the tap line from the pig station in a direction of the valve arrangement.