DVF Series Diaphragm Valves are a type of valve that uses a diaphragm to control the flow of fluid. The diaphragm is a flexible membrane that separates the two sides of the valve. When the valve is open, the diaphragm allows fluid to flow from one side to the other. When the valve is closed, the diaphragm seals off the two sides. DVF Series Diaphragm Valves are available in a variety of sizes and materials, making them suitable for a wide range of applications.