I recently purchased a 2001 Chaparral 265ssi with a pump out head.  There is a sea flange under the Cuddy stairs that is to supply water to the pump toilet.  I can get water to the head if I  take the hose off the sea flange and put it in a bucket of water so I know the toilet works.   The boat has a pressurized water system.  All the sinks work.  There is no water pickup under the boat.  Does the toilet use fresh water?  I can’t find another valve anywhere or a water pickup under the boat for sea water.  How does the water get to the other end of the sea flange that I can’t see?
Thank you
				
			Thank you