Pressing tools, jaws and chain sets 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 Press System® fittings and valves. Please refer to NIBCO technical data sheets and catalogs for engineering and installation information. NIBCO Press System® applies the proven performance of press technology to NIBCO valves and fittings – the most specified flow control products in the industry. The NIBCO Press System® features a full range of precision engineered copper and copper alloy fittings, commercial valves, accessories, pressing tools, jaws and chains.