Civil Deep 240 Volt Submersible Water Pump
https://www.deepwellpump.net/news/industry-news/beneath-the-waves-understanding-the-mechanics-of-240-volt-submersible-water-pumps.html
The mechanics of a 240 Volt Submersible Water Pump begin with its construction. Typically made from durable materials such as stainless steel or cast iron, these pumps are built to withstand the harsh conditions of underwater operation.