Highland Inline Shut Off Adapters. 

Inline Shut-Off for First Stages: 

• Install between first stage medium pressure port and standard regulator hose
• Slide machined Delrin collar to shut off gas flow
• Commonly used with rebreather systems
• 3/8”-24 UNF male inlet to 3/8”-24 UNF female outlet threads
• Low pressure use only - below 200 psi

Inline Shut-Off for Second Stages: 

• Install between standard regulator hose and second stage
• Slide machined Delrin collar to shut off gas flow
• Commonly used with deco rigs, stage bottles & drysuit inflation
• 9/16”-18 UNF male inlet to 9/16"-18 UNF female outlet threads
• Low pressure use only - below 200 psi