Counter Pressure Filler has stainless steel valves and rods. Additionally, tubing connects Bottle Filler to Product Tank & CO2 Valve. Attaches to 1/4" MFL disconnects and 1/4" barbed shutoffs on bottle filler. Use to fill your bottles with carbonated product directly from your kegs. Minimal loss of CO2 in solution with this product. Mimics single filling head on professional bottling system.