Fastener installation apparatus and associated method

A fastener installation apparatus, comprising:

• a housing;
• a moveable body at least partially within said housing and adapted to move in a lengthwise direction through said housing, wherein said body defines a plurality of openings;
• at least one piston fixedly attached to said moveable body and in moveable contact with said housing to thereby define first and second cavities on opposite sides of the piston and separated from one another in the lengthwise direction by the piston, wherein said moveable body defines respective openings in communication with the first and second cavities that are separated from one another in the lengthwise direction on opposite sides of the piston;
• a valve that is capable of alternately directing a fluid through a respective opening defined by the moveable body and into the first cavity and then through another respective opening defined by the moveable body and into the second cavity such that the moveable body is capable of being alternately extended and retracted in the lengthwise direction relative to the housing;
• and
• a jaw extending from said housing in alignment with said moveable body such that the jaw and moveable body cooperate to install a fastener upon extension of the moveable body.