This is the small oxygen regulator that fits the disposable oxygen bottles. No gauges, just a knob on top that adjusts pressure.
1⁄4″ Barb Output (does not include pictured 1/4″ ID tubing or diffusion stone)
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