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<p>thousand pounds per square inch, depending on pump design and drilling conditions.</p>

<p><big>Classification</big></p>
<p><big>According to the acting type</big></p>
<p>Mud pumps can be divided into single-acting pump and double-acting pump according to the completion times of the suction and drainage acting in one cycle of the piston's reciprocating motion.</p>

<p><big>According to the quantity of liners (piston/plunger)</big></p>
<p>Mud pumps come in a variety of sizes and configurations but for the typical petroleum drilling rig, the triplex (three piston/plunger)</p><p>
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