Storz System Reduction C-D
Storz system hose couplings are often referred to as fire brigade couplings.
They are symmetrical, non-shut-off couplings.
The couplings are connected by inserting the lug parts into each other and twisting them against each other.
The connection fittings to be coupled are identical on the coupling side and can be connected in any way, provided they are the same size.
Application area:
for industry, fire brigade, refineries, agriculture, construction, shipping, military, and disaster control
Application:
- for closing couplings with the appropriate size
- Quick connection and disconnection with a 120° rotation
Suction coupling:
Suction couplings are used for connecting suction hoses.
Fixed coupling:
Fixed couplings (threaded pieces in many variants) are used for connecting hoses to fittings. They are permanently screwed on one side with a pipe thread on a water-carrying fitting or a hydrant. On the other side, the usual couplings of a pressure hose or a suction hose can be connected.
Blind coupling:
Blind couplings (i.e., end caps for temporarily unused Storz connections) are used as an end on fittings to protect them (e.g., against the ingress of dirt into pumps) and must not be pressurized if the line cannot be relieved (risk of accident when loosening the blind cap under pressure).
|
Article |
Connection |
Material |
Dimension |
Lug Distance |
Working Pressure |
|
D Coupling with Tail |
Suction coupling with hose tail |
Aluminum |
25 mm |
31 KA |
15 bar |
|
C Coupling with Tail |
Suction coupling with hose tail |
Aluminum |
50 mm |
66 KA |
15 bar |
|
B Coupling with Tail |
Suction coupling with hose tail |
Aluminum |
75 mm |
89 KA |
15 bar |
|
D Coupling with 3/4" IG |
Fixed coupling with internal thread |
Aluminum |
3/4 inch |
31 KA |
15 bar |
|
D Coupling with 1" IG |
Fixed coupling with internal thread |
Aluminum |
1 inch |
31 KA |
15 bar |
|
C Coupling with 1" IG |
Fixed coupling with internal thread |
Aluminum |
1 inch |
66 KA |
15 bar |
|
C Coupling with 1 1/4" IG |
Fixed coupling with internal thread |
Aluminum |
1 1/4 inch |
66 KA |
15 bar |
|
C Coupling with 1 1/2" IG |
Fixed coupling with internal thread |
Aluminum |
1 1/2 inch |
66 KA |
15 bar |
|
C Coupling with 2" IG |
Fixed coupling with internal thread |
Aluminum |
2 inch |
66 KA |
15 bar |
|
B Coupling with 2" IG |
Fixed coupling with internal thread |
Aluminum |
2 inch |
89 KA |
15 bar |
|
B Coupling with 2 1/2" IG |
Fixed coupling with internal thread |
Aluminum |
2 1/2 inch |
89 KA |
15 bar |
|
B Coupling with 3" IG |
Fixed coupling with internal thread |
Aluminum |
3 inch |
89 KA |
15 bar |
|
D Coupling with 1" AG |
Fixed coupling with external thread |
Aluminum |
1 inch |
31 KA |
15 bar |
|
C Coupling with 1" AG |
Fixed coupling with external thread |
Aluminum |
1 inch |
66 KA |
15 bar |
|
C Coupling with 1 1/4" AG |
Fixed coupling with external thread |
Aluminum |
1 1/4 inch |
66 KA |
15 bar |
|
C Coupling with 1 1/2" AG |
Fixed coupling with external thread |
Aluminum |
1 1/2 inch |
66 KA |
15 bar |
|
C Coupling with 2" AG |
Fixed coupling with external thread |
Aluminum |
2 inch |
66 KA |
15 bar |
|
B Coupling with 2" AG |
Fixed coupling with external thread |
Aluminum |
2 inch |
89 KA |
15 bar |
|
B Coupling with 2 1/2" AG |
Fixed coupling with external thread |
Aluminum |
2 1/2 inch |
89 KA |
15 bar |
|
B Coupling with 3" AG |
Fixed coupling with external thread |
Aluminum |
3 inch |
89 KA |
15 bar |
|
D Blind Coupling |
Blind coupling with chain |
Aluminum |
- |
31 KA |
15 bar |
|
C Blind Coupling |
Blind coupling with chain |
Aluminum |
- |
66 KA |
15 bar |
|
B Blind Coupling |
Blind coupling with chain |
Aluminum |
- |
89 KA |
15 bar |
|
Reduction C-D |
Transition piece from C to D |
Aluminum |
- |
66 KA to 31 KA |
15 bar |
|
Reduction B-C |
Transition piece from B to C |
Aluminum |
- |
89 KA to 66 KA |
15 bar |
|
Reduction A-B |
Transition piece from A to B |
Aluminum |
- |
133 KA to 89 KA |
15 bar |
|
D Nozzle |
Spray nozzle type 25D |
Aluminum |
1 inch |
31 KA |
- |
|
C Nozzle |
Spray nozzle type 52C |
Aluminum |
2 inch |
66 KA |
- |
|
D Gasket |
Gasket type Storz |
NBR |
31 KA |
- |
|
|
C Gasket |
Gasket type Storz |
NBR |
66 KA |
- |
|
|
B Gasket |
Gasket type Storz |
NBR |
89 KA |
- |
|
|
A Gasket |
Gasket type Storz |
NBR |
133 KA |
- |
|
Thread Sizes Conversion Inch to mm (mm in approx. indication) |
|
|
1/4 inch |
12.5 mm |
|
3/8 inch |
16 mm |
|
1/2 inch |
19 mm |
|
3/4 inch |
26 mm |
|
1 inch |
32 mm |
|
1 1/4 inch |
40 mm |
|
1 1/2 inch |
48 mm |
|
2 inch |
59 mm |
Note: May show small scratches or streaks due to production!
