Single stage single suction centrifugal pump TB synchronous self-priming pump adopts synchronous suction gas separation device.The pump is has no inner return device. TB synchronous self-priming pump has higher 10% to 20% efficiency than the normal self-priming pump. Pump material: cast iron or stainless steel Impeller can be closed type or semi-open type. Used for water, chemical liquids or wastewater etc. Suction height: 8m