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Myers Injection Pump

The Myers injection pumps are used on many drilling rigs.  The 2 cylinder AO8-4 Myers pump is a very common pump.  This newer style pump has a single small piston cup and also a single large piston cup.  The old style Myers 2 cylinder pumps have 2 smaller piston cups and 1 single larger piston cup. Here is a operation and maintanence guide for the Myers 2 cylinder pumps and a performance, specifications, and dimensions of the 2 cylinder Myers pumps.