Uni Directional Knife Gate Valve Supplier in Bolivia South American Valve is the foremost Uni Directional Knife Gate Valve Supplier in Bolivia. A unidirectional knife gate valve is designed for handling thick, viscous fluids or those with high solid content, like slurry, wastewater, or pulp. It only permits flow in one direction and offers a tight seal to prevent backflow. It typically consists of a sharp-edged blade or gate that moves...