Wrench-tight British Bull Nose brass nut / tailpiece. Working pressure 3,000 psi. For use with British Oxygen Tank valves that have the Bull Nose connection. Has 1/4 NPT male connection opposite. Delivered Oxy-clean.

Wrench-tight CGA 346 brass nut / tailpiece with internal filter for breathing air from 3,000 psi. Has 1/4 NPT male connection opposite.

Wrench-tight CGA 347 heavy-duty brass nut / tailpiece with internal filter for high pressure breathing air from 3,000 - 5,500 psi. Has 1/4 NPT male connection opposite.

Wrench-tight CGA 540 brass nut / tailpiece with internal filter. Working pressure 3,000 psi. For use with Oxygen. Has 1/4 NPT male connection opposite. Delivered Oxy-clean.

Wrench-tight CGA 580 brass nut / tailpiece with internal filter. Working pressure 3,000 psi. For use with Inert Gas (Helium/Argon). Has 1/4 NPT male connection opposite. Delivered Oxy-clean.

Wrench-tight CGA 590 brass nut / tailpiece with internal filter. Working pressure 3,000 psi. For use with Mixed Gas such as Helium. as 1/4 NPT male connection opposite. Delivered Oxy-clean.

Wrench-tight CGA 702 heavy-duty brass nut / tailpiece with internal filter for ultra high pressure breathing air from 5,500 - 7,500 psi. Has 1/4 NPT male connection opposite.