{ "item_title" : "Positive-Displacement Hydraulic Pumps and Motors", "item_author" : [" Sami Rekik "], "item_description" : "Hydraulic pumps and motors, like cylinders, belong to the category of hydraulic components that convert mechanical energy into hydraulic energy and vice versa. The pump typically draws fluid from a reservoir through its suction port and discharges it through its pressure port. The pressurized fluid is usually directed to a directional control valve, which, in its neutral position, returns the fluid to the reservoir and, in its working position, directs it to a load. Hydraulic motors convert the hydraulic energy produced by the pumps back into the mechanical energy required to drive a rotating load. Hydraulic motors generally have the same construction as hydraulic pumps of the same type. Pumps can often be used directly as motors provided they do not have spring-loaded check valves.", "item_img_path" : "https://covers1.booksamillion.com/covers/bam/6/20/989/431/6209894313_b.jpg", "price_data" : { "retail_price" : "77.00", "online_price" : "77.00", "our_price" : "77.00", "club_price" : "77.00", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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