Ventilation cap zinc.

The ventilation cap fits EV tank alarm 1097 1½ and 1094 1½. The cap is mounted at the tank alarm's female side and fastend with a screw. This is screwed towards the side of the pipe, which secures the cap.

Cap: Zinc DS 7030 ZnAl4Cu1
Screw: Brass DIN 17660 CuZn39Pb3, zincplated