This advanced V(WQ) series, a branch of single-phase and three-phase drainage pumps, will be your ideal drainage helper. The letter "V" which substitutes for the letters "WQ" indicates the distinct design of the filter and the broadness of the high efficient area. It can work safely and efficiently at high flux with the feature of complete heads. The design of V1500F is designed to a wide tunnel which helps to convey the long fiber liquid of the solid whose diameter is about 10mm. The design of V2200 is designed to a wide tunnel which helps to convey the long fiber liquid or the solid whose diameter is about 20mm. The selection of bottom suction structure, stainless steel and special cast iron make the pump have the capabilities of complete drain and high resistance of abrasion and corrosion. The float switch can automatically control on and off with the change of the liquor level. The protector in the motor can automatically cut off the power when it is overheated or overcorrected, thus guarantee the security and reliability of pump’s run even in the atrocious environment.