With a compression design that allows for easy assembly this PARKER A-LOK® reducing union provides a leaktight seal for high pressure, vibration, and vacuum in gas or liquid applications. Features a double-ferrule design that allows the front ferrule to create a pressure seal on tube and body. Fitting won’t twist the tubing during installation so that the mechanical integrity of the tubing is preserved. Has a 4:1 safety factor with respect to the working pressure capabilities of the tubing used. Can be used with 304, 316, or 316L stainless steel tubing. For use in refineries, chemical processing, power generation, and instrument lines.