South American Valve is one of the top Uni Directional Knife Gate Valve Suppliers in Brazil. A unidirectional knife gate valve is specifically designed to tackle thick, viscous fluids or fluid-based materials containing a significant amount of solids such as slurry, waste water, or pulp. It only allows flow in one direction and provides excellent sealing against backflow. It usually takes the form of a sharp-edged blade or gate and moves perpendicular to the fluid flow direction to control that fluid flow. The gate is typically made of some very strong materials. These materials are resistant to harsh conditions such as those found with the use of stainless steel.
The valve body of cast metal or fabricated steel is almost always drilled with an opening that the gate passes through. The gate makes a tight seal against the valve seat to prevent flow when it's in the closed position. Some form of actuator, including a handwheel, pneumatic cylinder, or electric motor, has to be engaged to open up the valve. This allows the actuator to raise the gate for flow to take place while lowering it to seal off.
They are mostly applied to the regulation of sludge, sewage, and waste materials, thereby providing efficient waste management in many applications.
Knife gate valves are properly used for fibrous material handling; they find a popular application in pulp and paper processes, among other applications of fibrous substances.
They can be applied to corrosive chemicals, acids, and corrosive slurries, which is why their use is obligatorily present in chemical processing and in the petrochemical industry.
For the related generation and industrial processes, these valves find application into ash handling for smooth disposal of ashes and coal slurries.
They make sure of the proper control of heavy oils, petroleum slurries and refinery waste streams for petrochemical and refining processes.
Knife gate valves are very crucial for managing sediment, sand, gravel and spoil in construction and dredging operations.
Description:
Body: Carbon Steel, Ductile Iron, SS316Nominal Size: DN50 to DN450
Nominal Pressure: Class150 to Class30, PN10
End Type: Wafer Type, Lug Type
Operation: Handwheel, Electric Actuated, Pneumatic Actuated, Gear Operated