The DL 218 is recommended for motor troley. 
The housing is cast aluminum.
The diaphragms are made of special rubber NBR (acrylonitrile butadiene rubber). The original diaphragms contain the impressed code:
- oil 0330005
- air 0330006
Delivered as part of OLEOMAC benzine engine 50,2 m3 and fuel tank 1,1 l.
