During one of our never-ending technical discussions, Jim Grubbs at Jim Grubbs Motorsports (JGM) suggested that we take a look at the flow difference between 30- and 45-degree valve seats. While ...
Brass valve "swings" out, no "O" rings and the piping is never disturbed. Holds vacuum or pressure in either direction. Self adjusting seats for quality seal. Eight position quarter-turn, self-locking ...