Specification :

Model F Float valve provides positive and instataneous shut-off against high or low pressure assuring control to fluid flow through the drilling string at all times during the drilling operation, whether the kelly is in place or not.
Size : 1R ; 1F2R ; 3F ; 4R ; 4F ; 5R ; 5F6R ; 6F .

-Model G plapper full flow
plapper style vale featured and investment cast plapper
Size : 2F-3R ; 3F ; 4R ; 4F ; 5R ; 5F6R