The Sucker Rod Pump brings underground oil to the earth's surface. It is driven by a motor which turns a flywheel with a crank arm.
Attached to the crank arm is a Pitman Arm which in turn, attaches to the Walking Beam. At the other end of the walking beam is the Horsehead.
The Hanger Cable hangs off the Horsehead, and is attached with a clamp to a Polished Rod, which goes through a Stuffing Box and is attached to the Rod String.
At the bottom of the well a Traveling Valve, often just a ball in a cage, is attached to the Plunger (shown in green) at the end of the Rod String. Below that is another ball in a cage, called a Standing Valve.
This pump can lift oil 10,000 feet or more!
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