Understanding 'Could Drop System': A Term Related to Pumps?

Apologies for any confusion caused by the term 'could drop system'. This isn't a standard term used in relation to pumps. It's possible this is a typographical error or a specific term used within a particular industry or company. Without further context or clarification, it's difficult to provide an accurate explanation. Please provide more information or context about where you encountered this term, and we can try to assist in understanding it correctly.