Problems with sealless self-priming pumps
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200WFB-AD1 Why does its impeller have no key? I put it in and welded two points. There is no impeller locking device
This pump impeller does not have a key and you have to find the manufacturer yourself. The current method is to use a vacuum diversion tank + pipeline pump model instead. When the parameters remain unchanged, more than 30% of power is saved. If there are energy-saving manufacturers to do it, the energy saving can even reach more than 50%.
Can't tell if this is a threaded connection?
It feels like an interference fit and riveting at the back
Threaded connection, connect the thread, disassemble the impeller clockwise. Welding is to avoid loosening of the impeller. Use an angle grinder to grind off the solder joints. Gas cut or steam heat the impeller hub. Hold the pump shaft with a pipe wrench and remove the impeller clockwise.