Dental Equipment 50-50 Reflux Valve Reflux Valve Flow Regulation50-50 Reflux Valve: Regulates Flow For Dry Vacuum Systems, Ensures Optimal Performance. $1.00 Request a Quote System Overview The 50-50 reflux valve regulates the flow of air or fluids in dry vacuum systems. It is designed to ensure optimal performance and efficiency by managing system flow effectively. Specifications Part Number: 8800402B Type: Reflux Valve