Comparison : Item # M24-40, 1/8 Inch (in) National Pipe Thread (NPT) Male to Oxygen Diameter Index Safety System (DISS) Oxygen Demand Valve
Item # M24-50, 1/4 Inch (in) National Pipe Thread (NPT) Male to Oxygen Diameter Index Safety System (DISS) Oxygen Demand Valve
Item # M24-4CV, 1/8 Inch (in) National Pipe Thread (NPT) Male Oxygen Check Valve
Item # M24-5CV, 1/4 Inch (in) National Pipe Thread (NPT) Male Oxygen Check Valve
Item # MCV-3, 1/4 Inch (in) National Pipe Thread (NPT) Male Inlet to 9/16-18 Inch (in) Male Outlet Oxygen Check Valve