A 0-12mm Chem-Vac™ Chem-Cap® valve having an o-ring joint for connection to the right hand side of AF-0300-03 vacuum manifold. Adapter is available for #15, #25, and #30 o-ring joints. Complete gauge consists of a glass portion, a S.S. bushing drilled and tapped for 1/8 " NPT permitting direct connection to gauge tube, and an open top GL-25 screw cap.