Quote: (Originally Posted by
Jimbob1)
Does anybody know where a combination drill/reamer/tap would be available for the schrader valve seat or do the three seperate items need to be made up? Thanks
Are you making up a new add valve system from scratch, or fixing an existing one?
If you are fixing an existing one, you only need to polish the seat... not ream it.
If you are making up one from scratch, all of the components are off the shelf parts.
If you want to add a Schraeder to a solid block (valve body, etc), you can buy tubes that are threaded on the interior for the stem, and on the exterior for insertion into another component. We use these to make pneumatic speargun filler systems and when seated with epoxy into a solid block are good to any reasonable pressure.
Or, as before, you can buy a porting tool that does the diameter and the seat, and then tapping is a second machining operation.
Dave
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