Elkhart 6880 1/2" x 1/2" Flair-It Straight Stop Valve For hot and cold potable water fittings (150 degrees at 100 psi) Squarely cut end of tubing, slide nut over tubing Firmly press tubing onto the flare of the fitting Slide the nut to the threads and hand tighten securely onto the fitting Nuts are included Flair-It Straight Stop Valve 1/2 Inch FL x 1/2 Inch FL