This kind of vavles are usually used in CNG cylinders.Such as the cylinders used in CNG vehicles,cars .

The thread can be produced according to your requirment.

1)Suitable Medium:CNG 
2)Working Pressure:20Mpa 
3)Diameter:DN6mm

4)Outlet joint thread: NPT1/4

5)Joint thread to cylinder:PZ27.8

6)Safety device:33±2MPa,110°C±5°C

Quality certificate

1)SQC certificate for quality management system,has complied with the requirements of GB/T 19001-2000 idt ISO 9001:2000

2)Manufacture License of Special equipment in People's Republic of China,The Number is TSF210024-2012