Profile: The C.I. Thornburg Co., Inc., offers waste-water treatment equipments. Our products are iron pipes, plastic pipes, butterfly valves, fire hydrants, yard hydrants and clamps. We also offer couplings, saddles, copper meter yokes, ball valves, water meters and automatic meter reading systems. Our SNAP-LOK™ river crossing ductile iron pipes are engineered for submerged pipeline projects and other severe service applications where defection up to 15° is required. All major components of the river crossing joint are ductile iron. Our Mueller Super Centurion 200™ 2-way and 1-way fire hydrants offer hold-down nut with integral weather seal designed to discourage unauthorized tampering. They come with field replaceable nozzles and dual bronze drain ways.