Fiamma Lockable Water Filler
This Fiamma inlet has a lockable cap and accepts the 40 mm flexible hose, to connect to a fixed water tank in a campervan or motorhome.
It comes complete with 2 keys.
Available in Black or White.
For the 40mm hose, see 40mm Flexible Water Filler Hose
See also the MPK lockable water filler