Submersible electric pumps in stainless steel AISI 304 for waste water. They have a pump body, impeller, motor cover, seal holder disc and motor case in AISI 304, while the shaft is in AISI 303. Double mechanical seal with interposed oil chamber: the upper one in carbon/ceramic/NBR (motor side), the lower one in SiC/SiC/NBR (pump side). G20 cast iron spacer (only for DW – DW VOX 300). Available single-phase versions with or without float.