Elkhart (06910 Flair-It Three-Way Bypass Valve FLAIR-IT FITTINGS FLARED - CONE & NUT FITTINGS APPLICATIONS FOR HOT & COLD POTABLE WATER FITTINGS - 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 Three-Way Bypass Valve 1/2 inch Flare x 1/2 inch Flare x 1/2 inch Flare