Vacuum Tube Fitting Application Air Potable Water Fitting Side A Connection Type NW Fitting Side B Connection Type FNPT Fitting Material Stainless Steel Material Grade 304 Fitting Side B Pipe Size 1/4 in Fitting Side A Tube Outer Diameter 1 in Maximum Operating Temperature 320 Degrees F Trade No 25 Specific Fitting Shape Straight Adapter Flange Outside Diameter 1.5625 in Flange Thickness 7/50 in Number of Bolt Holes 0 Vacuum Rating 10-7 torr @ 72 Degrees F Standards GB4982-ISO-K