Soval offers a wide range of flanges for all your flow control projects and needs. We serve the uflm fire protection, awwa waterworks, irrigation, industrial and plumbing needs. Please contact us with any questions we you may have and we look forward to taking care of your needs with our outstanding customer service. A flange is a specialized control valve used to control liquid or gas flow through pipes. The rotating disc in the valve is controlled by an exterior wheel, allowing it to be completely shut off when necessary. Flanges contrast with valve types like steel globe valves, steel gate valves, check valves, and solenoid valves.