1. Valves

2. Objectives Compare a K valve to a DIN Valve. Describe a J valve.
Describe a manifold.
Describe the proper use of a valve.
Describe the safety features of a valve.

3. Main Points K Valves DIN Valves J Valves Redundant Valve Systems
Valve components
Burst Disc
Proper Use of Valves

4. K Valve
K valve
Simple on/off valve
Most common in use today

5. DIN Female threaded receiver for a male threaded regulator first Stage
More secure as the “O” Ring is captured
Typically used in high pressure systems (3500 psi)

6. J Valve On-off valve with low air warning
Identified by lever on side of valve opposite on-off knob
When used with a SPG the lever should always be down
Lever should be down when filling

7. Redundant Systems
H Valve “Y” Valve/Slingshot
Manifold

8. Valve Components
O Ring
Hand Wheel
Dip Tube

9. Safety Feature Burst disc
Designed to burst at slightly below hydro pressure
Prevents tank rupture in the event of
Overfilling
Overheating

10. Valve Use Prior to mounting regulator
Inspect “O” Ring for cracks, etc.
Keep hands away from on/off knob
Gently open valve to allow some air to escape
Blows out moisture and contaminants

11. Valve Use cont. With regulator mounted
Depress purge as you gently open valve 1/4 to ½ turn
Release purge and listen for leaks
No leaks
open valve completely and close ¼ turn
Leak present
Close valve and determine source of leak

12. Valve Use cont. Closing valve
Close gently
Closing with excessive force will wear out valve stem or seat
Always carry the cylinder with the valve opening facing away from you.

13. Main Points K Valves DIN Valves J Valves Redundant Valve Systems
Valve components
Burst Disc
Proper Use of Valves

14. Objectives Compare a K valve to a DIN Valve. Describe a J valve.
Describe a manifold.
Describe the proper use of a valve.
Describe the safety features of a valve.