Hi Sam,
If you plan to keep the bronze thru-hull for the anchor locker seacock, you have to order it directly from Forespar. The price was $73 two years ago.
"The valves you are interested in can be ordered using part number 932263N, which will delete the thruhull and change the valve base from buttress thread to NPT "straight" pipe thread."
"The 93 series of valves is a newer design and can be assembled with NPT Straight Threads by just adding an
N to the end of any of the six digit parts number shown..."
Contact them and they will send you an order form.
-Chris
