A storz coupling is a quarter turn internal lug coupling, easy to connect to each other by the force of lugs which are on the inside of the coupling. Storz coupling is widely used by fire services worldwide and was invented for this purpose by Guido Storz in 1882. It is commonly used on fire hoses to connect to fire hydrants in western Europe, esp. Denmark, Germany, Austria, Switzerland, Sweden and the Netherlands. In some industry usage like agriculture and irrigation, it can be casting made for general hose connection and pressure undertake.

However if it is used in firefighting which is rather demanding, a forged artcraft is always demanded to guarantee the safety and duration of the couplings. As the metal is shaped during the forging process, its internal grain deforms to follow the general shape of the part. As a result, the grain is continuous throughout the part, giving rise to a piece with improved strength characteristics.

forgedvscastedstorz

Compression type test is thus carried out to check the tensile strength; and snatch test on storz claws is performed taking casted and forged pieces in comparison, both in line with DIN standard requirements.

Compression test to justify forged tensile strength over casted pieces To squeeze a forged head by hydraulic compression test machine, we did not witness fractures anywhere at the bending areas when the test piece was seriously distorted. That proves the metallurgy fibres are well connected adding to the its greater tensile strenth that can endure heavier impacts thus promises a secured and longer life time resulted from forging fabrication, as in comparison to the casted.

Snatch type test: casted vs forged. In snatch test we pulled storz claws of a casted aluminum-alloy and a forged alloy piece respectively by hydraulic pulling machine.

Claws of the forged-alloy was torn apart as the accumulative force hit 98.4kN, when the casted capacity was observed only 35.4kN. The forged structual length was proved 2.8 times greater in laboratory. Furtherly the broken cross-section makes it visually possible to distinguish the continuous forces happens inside the material proving forging quality over casting ones which is a must in firefighting application.

Storz hose couplings are available with us in forged, casted aluminum, brass and stainless steel. NBR gasket for both suction and delivery, or delivery only is optional. Check with our sales to make sure of that.

SIZEKAHOSELALALBRSS



CASTFORGEDCASTCAST
D2531φ2553051150051750051370051040
D2531φ1560
051750.1051370.1
D2531φ1953
051750.2051370.2051040.1
4559φ4575051153


C5266φ5255051154051754

C5266φ5275

051374
C5266φ5290


051044
C5266φ4070051154.1051754.1

C5266φ4255051154.2051754.2051374.2
C5266φ4570051154.3051754.3

C5266φ5570051154.4051754.4

6581φ6560051155051755

6581φ5260
051755.1

6581φ7565
051755.2

B7589φ7560051156051756

B7589φ7580
051756.1

B7589φ75105
051756.2
051046
B7589φ6585051156.1051756.3051356
B7589φ7075
051756.4

100115φ10085051157051757

A110133φ110110051158051758

A110133φ100110051158.1051758.1


Storz hose couplings are available with us in forged, casted aluminum, brass and stainless steel. NBR gasket for both suction and delivery, or delivery only is optional. Check with our sales to make sure of that.

SIZEKAHOSELALALBRSS



CASTFORGEDCASTCAST
D2531φ2553051050051850051350051020
D2531φ1560051050.1051850.1051350.1051020.1
D2531φ1953051050.2051850.2051350.2051020.2
3244φ3270051051
3244φ1970051051.1
3244φ2570051051.2
3851φ3890051052051852051352051022
3851φ2590051052.1051852.2051252.1
3851φ3290051052.2051852.3051352.2
4559φ4590051053
C5266φ5290051054051854051254051024
C5266φ1990051854.1
C5266φ2590051854.2051254.2051024.2
C5266φ2890051854.3
C5266φ3290051054.4051854.4051254.4051024.4
C5266φ3890051054.5051854.5051254.5051024.5
C5266φ4090051854.6051024.6
C5266φ4290051054.7051854.7051354.7051024.7
C5266φ4590051054.8051854.8051354.8051024.8
C5266φ5090051054.9051854.9051024.9
C5266φ5590051854.10
C5266φ6090051055.11051854.11
6581φ6595051055051855051355051025
6581φ3890051055.1051855.1051355.1051025.1
6581φ5295051055.2051855.2051355.2051025.2
6581φ6395051055.3051855.3051355.3051025.3
6581φ7095051055.4051855.4051355.4
6581φ7595051855.5051355.5051025.5
B7589φ75125051056051856051356051026
B7589φ52125051056.1051856.1
B7589φ63125051056.2051856.2
B7589φ6595051356.3051026.3
B7589φ65125051056.3051856.3
B7589φ70125051056.4051856.4
B7589φ80125051056.5051856.5
100115φ100150051057051857051357
100115φ100125051057.1051857.1
A110133φ110170051058051858051358
A110133φ90170051858.1
A110133φ100170051058.2051858.2051358.2
A110133φ125180051858.3
A125148φ125200051059051859
A150160φ150180051060

Storz coupling by DIN smooth hose shank with collar is done as per EN 14420-2 that is assembled with safety clamps to EN 14420-3 / DIN 2817. Delivery and suction gasket is applied as standard.

Standard forging aluminum is used to produce the storz head part, hose shank from bar stock directly making it precise in all dimension.

SIZEHOSEAL
C52φ50.4051854.18
B75φ75.4051816
100φ100.0051057.9
A100φ100.0051878

Storz coupling by bent 45° hose tail is reduced version for space saving. Delivery and suction gasket is applied as standard. Brass alloy by forged head is applied, hose shank casted.

SIZEKAHOSELBR
C52φ66.0φ19.0φ90.0051390

Storz coupling of size 8" is with 3 claws, and grooved hose shank fitted for layflat hose assembly. Casted aluminum body is made.

storzgrooveshank

SIZEKAAL
DN150 6"φ160.0051062

Storz hose couplings are available with us in forged and casted aluminum. NBR gasket for both suction and delivery, or delivery only is optional. Check with our sales to make sure of that.

SIZEALAL
CASTFORGED
45×D25055050055852
C52×D25055051055853
C52×32055051.1055853.1
C52×38055051.2055855
65×38055052.2055856
65×45055052.1
65×C52055052055858
B75×C52055053055859
B75×65055053.1055860
A110×C52055054055861
A110×65055054.1055862
A110×B75055055.1055863
125×100055055
125×A110