German Standard medical gas outlet: 1. German standard medical gas outlet are manufactured according to EN 737-1:1998 standard and DIN 13620-2 standard. 2. ISO 32 color standard is applied in distinguishing different colors. 3. The sockets in medical gas outlets for different gases are in different shapes so that the supply of gases cannot be confused. 4. The medical gas outlet can be fixed either with copper pipelines (outer diameter &Phi8) or with connectors for breather pipe. 5. Each medical gas outlet has been tested according to EN737-1 standard. 6. Each medical gas outlet we supply has passed air tightness test. 7. Designed with valve for the convenience of maintenance.