GV8 type gauge valve is a block and bleed needle pattern gauge valve with specially designed integral bleed. Ideal for use on applications requiring bleeding or venting of media. Self centering needle non- rotating, on the valve seat. The conical metal tip (stem type CT) press fitted ensures perfect alignment for positive bubble tight shut-off. Standard end connections are male inlet and female outlet or female inlet and female outlet from 1/4 _ to 3/4 _.