Valve manifold

DETAILED DESCRIPTION Accordingly, the present invention relates to a valve manifold of the type intended for use with a flow meter or other instrument; comprising body means, flow passage means in said body means extending longitudinally between the ends thereof; inlet passage means in said body means for introducing process fluid into each end of said flow passage means; outlet passage means in said body means at each end of said flow passage means for discharging process fluid to the instrument; line block valve means for closing said inlet passage means and for partially closing said outlet passage means with respect to said flow passage means; vent passage means in said body means between said line block valve means for venting fluid from said flow passage means to the atmosphere; equalizer valve means for closing said flow passage means and said vent passage means for closing the latter down-stream of said equalizer valve means in the direction of vent fluid flow to the atmosphere.