In Fig. 1-12, we see an example of a welding operation in which a farm equipment manufacturer applied hydraulics for positioning and holding parts while welding is done. It is a typical example of how fluid power can be used in manufacturing and production opera reduce costs and increase production. This particular application required a sequencing system for fast, positive holding. This was accomplished by placing a restrictor(sequence valve) on the flow of oil in the line leading to second of the two cylinders(rams), as illustrated in Fig. 1-13. The first cylinder extends to the end of its stroke. Oil pressure then builds up, overcoming the restrictor setting, and the second cylinder extends to the "hold" cycle. This unique welding application of hydraulics initiated to increase productivity by making more parts per hour. In addition, the use of hydraulics reduced scrap rates and operator fatigue as well as increasing productivity from 5 pieces per shift to more than 20-a 400% increase.