NIBCO’s PressACR fittings, a joining method designed for use in copper tube systems for air-conditioning and refrigeration applications. PressACR is approved for use with a wide range of refrigerants and lubricants, and creates a safer installation because there is no flame or fire hazard with press technology. The fittings are UL recgonzied to 700 PSI, and feature a gray HNBP (hydrogenated nitrile butadiene rubber) seal to help differentiate them from other NIBCO press products. Straight and reducing couplings, 45- and 90-degree elbows, caps, Y-joints and tees are available in sizes 1/4”, 1/2", 3/8”, 5/16”, 5/8”, 7/8” and 1 1/8”.