photo's from my in boat testing
this is with the stock valve--boat is also just sitting on the trailer for all photo's
stock valve
http://i527.photobucket.com/albums/c...e/DSC00467.jpg
another angle of stock valve
http://i527.photobucket.com/albums/c...e/DSC00468.jpg
stock valve with spring removed--very noticable increase in water flow
http://i527.photobucket.com/albums/c...e/DSC00469.jpg
another angle of spring removed valve
http://i527.photobucket.com/albums/c...e/DSC00470.jpg
what you need to uprade to 1" valve
only 3 simple piece's to buy at home depot
stock valve removed from boat
http://i527.photobucket.com/albums/c...e/DSC00473.jpg
then remove these two adapters
http://i527.photobucket.com/albums/c...e/DSC00474.jpg
the 3 piece's purchaced
http://i527.photobucket.com/albums/c...e/DSC00475.jpg
going back together, the intake adaptor from the original valve now goes on the output side of the new valve
http://i527.photobucket.com/albums/c...e/DSC00480.jpg