ZWL Self priming sewage pump closed coupling
Pump material:cast iron or stainless steel
The pump can be driven by explosion motor or non explosion proof motor.
Closed coupling
mechanical seal
ZWL Self priming sewage pump can handle the wastewater or waste liquids with solid grain or fiber etc impurity
ZWL Series direct-coupled self priming sewage pump： 
Brief introduction：
ZWL Series self priming not-clogging sewage pump is a new structure product which is developed on the base of ZW Series self priming sewage pump with shaft coupling. (ZWL Series self priming sewage pump is direct-coupled between the pump and motor)

Features：

ZWL Series self-priming not-clogging sewage pump combines self-priming and not-clogging and adopts axial circumfluence outer-mix type. Through particular design of casing and impeller channel, it need not be fixed with base valve and poured in water and it can suck and discharge liquid containing big grain and long fiber substance like normal self-priming pump. So ZWL pump is widely used in river and pond breeding, light industry, paper-making, weaving, foodstuff, chemical industry, power industry, fiber, slurry and mixed suspension etc chemical medium, municipal sewage project etc.
Simple structure, good self-priming performance, high sewage capability, high efficiency and energy saving, good sewage drainage effect etc. It has the wide application and developing future.
ZWL Pump is directly-coupled between the pump and motor.  advanced structure, steady working, reasonable structure etc. It is developed on the base of ZW Series self priming sewage pump.