TWP Series Low Pulse Pump (China National Patent Product) The TWP series low pulse pump has a single class, a single inlet and a unique design. It is the impeller of China national patent design that makes the pump has much lower pulse impact. The airproof of the pump is realized through the action of a dynamic impeller and filing mud. This series pumps can be equipped with a middle or high speed pulp feeding system in order that the output and quality of paper can be greatly improved. The pump has been one of ideal feeding pumps or substitutes for old ones for customers from home and abroad. The working concentration of pulp is below 1.5%.