Page 13 of Reciprocating Process Pumps to API Standards by RAM Pumps

careful matching of application requirements with pump options will assure optimum performance and pump life g each frame size has a number of plunger diameter options providing a wide range of performances to best suit the application requirements refer to data sheets in back for model and performance selection g liquid-end construction and elastomers must be compatible with the liquid being pumped temperature and other application variables g the drive is dependant upon the location of the application the available electricity safety requirements duty-cycle and matching of the pump rpm and drive g the pump is the heart of the system but adequate pressure relief and other system accessories are equally important for optimum performance and life g technical support accompanies every product we have a highly trained sales and engineering staff available to assist you with the selection of one of our standard products or we will review your custom requirements and design a pump to meet your specific needs volumetric efficiency the data has been presented using a volumetric efficiency of 95 for pressures up to 200 bar 3,000 psi at higher pressures the volumetric efficiency will reduce at 700 bar 10,000 psi it will be reduced by 5 approximately 1 per additional 100 bar 1500 psi pump speed rpm the performances for each model listed are the maximum rated rpm and flow being positive displacement pumps the rpm of each can be reduced to decrease the flow down to the stated minimum rpm listed mechanical efficiency m the pumps have a mechanical efficiency better than 90 over most of their performance range the conservative figure of 85 is used in determining the required power [kw hp the efficiency of the transmission system should be allowed for t required power kw hp do not exceed the rated power [kw hp for the pump absorbed kw flow l/m x pressure bar m /100 x t /100 x 600 absorbed hp flow gpm x pressure psi m /100 x t /100 x 1714 the pumps that stand the test of time 50 frame 9

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