Penta
Senior Member
- Joined
- Dec 2, 2007
- Messages
- 118
- Location
- Canada
- Vessel Name
- Penta
- Vessel Make
- 36' 1961 Sather ex-Gill Netter
What have others done about the fact that the treads on new thru-hulls are straight cut while those on ball valves are pipe taper and therefor do not thread together properly, only about 3 threads?
On my boat where the wood plank thickness is such that standard flange style thru-hulls will not work the only alternative seems to be this combination even though they are not mechanically compatible.
I thought about chasing the first bit of the thru-hull threads with a pipe die however when you get to 1 1/4 inch size that I need the die is so big it will not go down to the threads before bottoming out.
The parts in question are made by Groco however every combination that I have been able to try is the same.
When questioned, the chandelries just shug and say "that's the way they make them"
What say as a solution?
John Tones* "Penta"
Sidney, BC
On my boat where the wood plank thickness is such that standard flange style thru-hulls will not work the only alternative seems to be this combination even though they are not mechanically compatible.
I thought about chasing the first bit of the thru-hull threads with a pipe die however when you get to 1 1/4 inch size that I need the die is so big it will not go down to the threads before bottoming out.
The parts in question are made by Groco however every combination that I have been able to try is the same.
When questioned, the chandelries just shug and say "that's the way they make them"
What say as a solution?
John Tones* "Penta"
Sidney, BC