This is a 52-C Storz coupling with a lug distance of 66 mm and G 2 inch male threads. It is made of forged aluminum with an NBR (nitrile rubber) seal. The maximum operating pressure is 16 bar (232 psi). The coupling is suitable for temperatures between -40 to 110 °C (-40 to 230 °F).
Storz couplings are used in fire protection systems and industrial applications. Both parts of the Storz coupling have the same head structure, so couplings with the same lug distance can be buckled together.
Pros:
- Quick connection and release by twisting 120°
- All couplings with the same lug distance and nominal size are compatible with one another
- Aluminum couplings are lighter in weight than stainless steel
Cons:
- Storz couplings have no shut-off function
Specifications
Storz size : 52-C
Size of threaded connection [inch] : 2 inch
Thread connection : Outer thread cylindrical BSPP-G
Lug distance : 66 mm
Material : Forged aluminum
Seal material : NBR (nitrile rubber)
Operating pressure (bar) : 16
Min temperature (°C) : -40
Max temperature (°C) : 110

![NBR O-ring 65 x 1.5mm (OD 68mm) 70 Shore A [20 Pieces]](https://www.drillforgepro24.com/wp-content/uploads/2026/06/or.19a44f36_57e21f7a-85f8-4458-9c87-3a955e2279b3.webp)
![FKM O-ring 8.5 x 1.5mm (OD 11.5mm) 80 Shore A [50 Pieces]](https://www.drillforgepro24.com/wp-content/uploads/2026/06/or.19a44f36_5020f39e-44f9-4f94-9d35-02b31776d10e.webp)
![EPDM O-ring 8 x 1.9mm (OD 11.8mm) 70 Shore A [50 Pieces]](https://www.drillforgepro24.com/wp-content/uploads/2026/06/or.19a44f36_5dbfd8b1-6a71-4eba-8827-4e69af7aeee8.webp)
![EPDM O-ring 6.3 x 2.4mm (OD 11.1mm) 70 Shore A [50 Pieces]](https://www.drillforgepro24.com/wp-content/uploads/2026/06/or.19a44f36_cf2eb52d-5db7-4547-99da-56d7934c8a3e.webp)
Reviews
There are no reviews yet.