The Storz hose coupling has no female or male ends, removing
the trouble of matching different ends. It is easily connected
or disconnected with a 120° rotation using the proper coupling
spanner.
It is used as the national standard of many different countries
such as Germany, China, Australia, etc. for hose fittings . In
Germany, the standard is known as DIN while in China, the
standard is known as GB.
While both standards look similar, the 1.5” and 2.5” versions
have different measurements. Only the 2.0” version can be used
interchangeably between the two national standards.
The Lug Size Of 2.5" Germany Storz Fire Hose Coupling : 81mm