Thank you very much for that info. @Bob, just so I understand, The valve is removed by un-threading the thru hull fitting from outside of the boat, correct? Is there a special tool needed to spin the thru hull and if so, where do you get it since they don't make the valve anymore? My boat is currently on the hard, if I wrap any wires or hoses near the valve with aluminum foil and use a heat gun on the seacock, could that free it up? Thanks again!
Michael M