Diaphragm Valves Diaphragm valve straight through - DIAVAL Fig. S | Comeval Comeval Diaphragm valve straight through - DIAVAL Fig. S | Comeval The DIAVAL® Fig. S diaphragm valve is a straight-through, bidirectional valve designed for controlling the flow of service fluids in abrasive applications, water treatment plants, and the process industry. It features a bolted bonnet and a seatless design, utilizing a diaphragm as the closure element, with a rising handwheel for operation. The valve is... View