... Cylinder Filter Nozzle, and tower packings/fillings for waste water treatment,Sand IDST has a wide selection of sand filter nozzles ... Nozzle,filter nozzles and tower packings/fillings for waste water treatment.Filter Nozzle, Cylinder filter nozzle,tower packing for waste ... water treatment, and Sand filter. Material: ABS,PP Specifications:1) 250kg- ...