Compression Gauge Cock.
Corrosion. Rusting or wasting away of the surfaces of metals.
Crow. A claw with a screw attached to support and feed a drill brace for drilling holes in pipes.
Cup Leather Packing. The leather packing used around the ram of a press. In section it resembles a cup—hence the name.
Cup Leather Packing.
Cushioning. This term applied to the operation of pumps, etc., is the imprisoning of steam, water or air between the piston and cylinder head to prevent the piston from impact with the head.
Cylinder Head or Cylinder Cover. A plate which encloses or covers the end of a cylinder.
Dead end of a pipe. The closed end of a pipe or system of pipes.