Blade valves type vent, have been designed to work with high fiber fluids, suspended solids or compounds. Therefore, our valve is an excellent solution for the handling of viscous fluids. This type of valve is commonly used in the Paper Industry, Sugar, Cement and Waste Water Treatment Plants, among others. It has an airtight seal, to avoid any type of leak or spill. In addition it is cast in one piece, making it lighter and cheaper than conventional.