This is the small oxygen regulator that fits the disposable oxygen bottles. No gauges, just a knob on top that adjusts pressure.

Features:

• 1/4″ Barb Output
• Max Delivery Pressure: 100 PSI
• Max Flow Rate: 180 CFH
• Regulator is Left Hand Thread
• Stainless Steel Actuating Rod
• Machined brass body with adjusting cap, piston and hose connection