SSCV is the SSC combined with a Full Flow In-Line IBV Series ball valve, which includes the plumbing before SSE, and prevents back-flushing into the strainer or through the seacock.
FOR WINTERIZATION: Close the seacock, remove the quick release plug and insert the service adaptor (included). Anti-freeze can be pumped into the cooling system.
FOR SYSTEM FLUSHING: Close the seacock and insert the service adaptor. Dockside water can be used to flush the cooling system with the engine running at idle speed.