Data sheet
Storz connector 38 / 25-D, Aluminium (forged)
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STK 51/31 A
Example illustration
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Materials:
Seal: NBR (stainless steel: FKM)
Temperature range:
-40°C to max. +110°C (Stainless steel: -15°C to max. +200°C)
Operating pressure:
max. 16 bar
Operating range:
Industry, fire brigade, refinery, agriculture, construction industry, maritime, military and catastrophe protection
Dimensions for determining the size of Storz couplings DIN sizes
lug distance 31 mm = Storz size 25-D, lug distance 66 mm = Storz size 52-C, lug distance 89 mm = Storz size 75-B, lug distance 133 mm = Storz size 110-A
Advantages:
•simple assignment of hose end and connection,
•fast connection and disconnection through a 120°-rotation,
•All couplings with the same lug distance are compatible with one another. The rule that applies is: same lug distance, same nominal size,
•large range of applications through the use of application-specific hoses,
•Aluminium forged - no danger of breakage, such as exists with cast couplings of aluminium,
•Brass - body is made of DVGW/KTW-compliant alloy.
•fast connection and disconnection through a 120°-rotation,
•All couplings with the same lug distance are compatible with one another. The rule that applies is: same lug distance, same nominal size,
•large range of applications through the use of application-specific hoses,
•Aluminium forged - no danger of breakage, such as exists with cast couplings of aluminium,
•Brass - body is made of DVGW/KTW-compliant alloy.
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| Material | Aluminium (forged) |
| Storz size 1 | 38 |
| Storz size 2 | 25-D |
| Lug distance 1 [mm] | 51 |
| Lug distance 2 [mm] | 31 |
| Temperature range [°C] | -40 to +110 |
| Standard | DIN 14341 |
Further information:
| {{ $t('shop.all.gewicht') }} | 240 g / pcs |
| {{ $t('shop.all.gtin') }} | 4050571646790 |
| {{ $t('shop.display.artikel.zollwarennummer') }} | 76169990 |
| {{ $t('shop.display.artikel.rohskonform') }} | {{ $t('shop.all.ja') }} |
Figure
Drawing:
Drawing: Sizing for Storz coupling
More information on this item and the process for ordering it can be found in our online shop https://www.landefeld.de under item number STK 51/31 A.
Landefeld Druckluft und Hydraulik GmbH · Konrad-Zuse-Straße 1 · 34123 Kassel · Germany
All data are to be understood as non-binding reference values! We do not assume liability for any data selection not confirmed in writing. Unless otherwise specified, pressure values refer to liquids from Group II at +20°C.
Our products arid goods are generally only intended for industrial and commercial uses.
Our products arid goods are generally only intended for industrial and commercial uses.
As of: 08.12.2025