Type WD, WDF, WDL, WG and WGF sewage pumps are of new series signed in compliance with Ministry Standard "Centrifugal Sewage Pump" JB2975. The series of pump is a high efficiency and energy saving product with advanced design, compactive constuction, little installation space and high effi-ciency

The discharge direction of type WD, WDF, WDL,WG and WGF pumps can be changed in any direcfion at 45° . For 250 WD, and 250WDL pump it may berotated in 12 directions at 30 space. Packing seal is generally adoped for shaftseal. Acid-resistant asbestos packing or mechanical seal is adopted for type Fcorrosive-resistant pump. The bearings are lubricated with grease, except for type250WD pump lubicated with oil

Type WD, WDL and WG pumps are suitable for delivering sewage, feces andliquid with fibre or suspension at a temperature under 80°C (The block sizes of suspensions should not be more than 80% discharge diameter.)

The wet parts of the type WDF, WGF sewage pumps are made of stainlesssteel. Therefore, the pumps are suitable for delivering acid, alkalinous and other corrosive sewage. The pumps may be used for delivering chemical fluid at atemperature not being more than 80°C in the process of chemical industry and for delivering the fluid of food industry.