The outlet consists of a cover, a blind cap and an alveolit washer.
This outlet fits both to 20/30l canisters and to IBCs with 60 mm coarse thread.
By using the blind cap you can seal canisters and IBCs or by using the nozzle you can dump them in a clean way.
You should always seal IBCs with a thight cover to avoid leakage by dripping stop cocks and to protect the stop cock from dust and dirt.
