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.