Bulkhead Union Application Gases Liquids Fitting Side A Connection Type Compression Fitting Side B Connection Type Compression Fitting Material Stainless Steel Fitting Side A Tube Outer Diameter 1/4 in Fitting Side B Tube Outer Diameter 1/4 in Material Grade 316 Maximum Operating Pressure 10 000 psi Maximum Operating Temperature 1 200 Degrees F Overall Length 2 9/32 in Specific Fitting Shape Straight Bulkhead Union Compatible Fitting Brands CPI Thread Size A 7/16-20