2-valves diaphragm manifolds with sightglass & 1/4" SAE fittings

anodized aluminum block body,

one full turn open/close valve,

oversized sightglass for easy viewing,

excellent vacuum characteristics,

no-flutter gauge design,

easy-to-grip knobs

super strong 100% Teflon diaphragms,

available with 80mm/3.5" liquid gauges