Pressing tools and jaws are an integral part of ensuring a reliable, permanent connection between copper piping and NIBCO® Press System® fittings and valves. Use only pressing tools, jaws and chain sets that have been tested and approved for use with NIBCO® PressACR fittings. Please refer to NIBCO technical data sheets and catalogs for engineering and installation information. NIBCO® PressACR applies the proven performance of press technology to NIBCO air conditioning & refrigeration fittings – the most specified flow control products in the industry. NIBCO® PressACR features a full range of precision engineered copper fittings, accessories, pressing tools and jaws.