FIRE FIGHTING FITTINGS AND COUPLINGS

FITTINGS, COUPLINGS

AND CAPS

Coupling is a device used to connect the fire hose to the valve and to the

nozzle.

Adaptors and blank caps are needed in special cases:

adaptors are used to switch from one size to another size or from a

threaded end to a quick connection, while blank caps are used to shut

connections fitted on a fire equipment.

Spanners to allow complete connection of the couplings are designed

according to applicable standard.

Storz Standard

A Storz coupling is a quick connection coupling, commonly used to connect a fire

hose to a fire hydrant.

It is a symmetrical coupling (without male/female part) which is very easy to

connect. This is the standard coupling employed in many countries such as

Denmark, Germany, Austria, Poland, Switzerland, the Netherlands, Greece, Israel,

Portugal, etc...

Once the lugs of the clamp fitting match the slots of the opposite flange

it’s necessary to turn the two flanges each other to ensure tightness of the

connection.

Storz couplings are available in several sizes for delivery and suction operation.

They are manufactured according to the applicable national standard.

AFNOR Standard

A DSP coupling is a self-sealing symmetrical coupling which is secured by inter-

connecting two couplings together.

To get a tight connection a locking ring shall be turned up to stop. In this way

two preformed bosses on the locking ring match the grooves preformed on the

connecting coupling. DSP couplings can be used for delivery operation only.

They are compatible with Guillemin couplings which are used for different

purposes.

They are manufactured according to NF S61-701.

NFPA Standard

National Hose Thread (NH), also known as National Standard Thread (NST) is a

non-symmetrical coupling with male and female part.

It is the most common type of fire hose coupling used in the United States.

They are suitable for delivery and suction operations.

The male and female threads screw together and the connection is sealed with a

gasket.

10 Bocciolone Antincendio · Fire Fighting Equipment