The article explains the differences between two common types of scuba tank valves: DIN and INT (Yoke).
INT / Yoke Valve:
- INT stands for “International,” and it’s the most common type of valve in recreational diving, especially outside of Europe.
- The INT valve is easily recognizable by its o-ring seal on the front and the dimpled guide for the yoke on the back.
- In this system, the regulator is attached to the valve by screwing the yoke-style connector onto the valve. The air pressure, along with a properly greased o-ring, ensures a secure seal.
DIN Valve / Adaptor:
- DIN stands for “Deutsche Industrie Norm,” which indicates that it is a German standard.
- The DIN valve has a threaded opening where the regulator screws into, and the o-ring is located on the first stage of the regulator, rather than the valve itself.
- DIN valves are typically rated for higher pressure than yoke valves, which makes them ideal for technical or deep diving.
- Many tank manufacturers offer both valve types, and DIN/INT adaptors are available, allowing divers to switch between the two systems while traveling.
In summary, while INT/yoke valves are more common in recreational diving, especially outside of Europe, DIN valves are used more in technical diving due to their higher pressure rating. Adapters make it easy to switch between the two systems as needed.
