The Myers CPM18-40 is a high-pressure reciprocating pump in the Myers HDD range, rated by the factory at 4000 PSI maximum working pressure, 19.5 GPM maximum flow, and a rated speed of 50 SPM. Four liner sizes let the operator trade flow against pressure: 1.25 in gives 9.9 GPM at up to 4000 PSI, 1.375 in gives 12 GPM at up to 3200 PSI, 1.5 in gives 14.3 GPM at up to 2500 PSI, and 1.75 in gives 19.5 GPM at up to 1800 PSI. The crankcase is a strong CL30 cast iron casting that anchors the power section, and the crankshaft is automotive-grade 4140 heat-treated forged alloy steel. Connecting rods and crossheads use high-strength ductile iron to the ASTM A536 standard, and replaceable bronze wrist pin bearings mean a worn bearing can be swapped without replacing the whole rod assembly, cutting long-term overhaul cost. We supply fluid-end parts for the CPM18-40 across Canada, the United States, and international oil and gas markets.
FAQ
What are the factory ratings of the Myers CPM18-40?
Factory data lists a maximum working pressure of 4000 PSI, a maximum flow of 19.5 GPM, and a rated speed of 50 SPM.
Which liner sizes are available for the CPM18-40 and what do they deliver?
Four sizes: 1.25 in delivers 9.9 GPM at up to 4000 PSI, 1.375 in delivers 12 GPM at up to 3200 PSI, 1.5 in delivers 14.3 GPM at up to 2500 PSI, and 1.75 in delivers 19.5 GPM at up to 1800 PSI.
What is the power end of the CPM18-40 made of?
The crankcase is CL30 cast iron, the crankshaft is 4140 heat-treated forged alloy steel, and the rods and crossheads are ductile iron to the ASTM A536 standard, with replaceable bronze wrist pin bearings.
What fluid-end parts do you offer for the Myers CPM18-40?
We supply liners, plungers, valves, valve seats, valve springs, packing, and repair kits for the fluid end; contact us for current availability for this model.
Do you ship CPM18-40 parts to Canada and the United States?
Yes. We ship internationally, and pump parts of this type generally move under HS code 84139100, with export documentation available for Canadian, US, and other destinations.