Ani engineers manufactures heavy-duty gear pumps [series aenx] that are quite familiar in the industry for pumping and transfer of viscous liquids, petroleum products and corrosive chemicals, etc, made in cast iron and stainless steel construction. The modified version of these gear pumps are useful for pumping and transfer of heavy fuel oils, like fo, lshs, hsd, ldo, crude petroleum, wax slurries, starch solutions, glue, etc. The standard construction of the pumps is in cl with optional availability in cast steel, stainless steel, etc. Other features include: self-priming with flanged inlet/outlet; double helical herringbone gears of alloy steel with nitriding; double spring type inbuilt pressure relief valve for effective by passing; imported needle roller bearings with optional availability of external/internal lubrication; and optional availability for high temperature and high viscous application. The pumps are available in the capacity range of 0.5 myhr to 125 mj/hr in sizes ranging from 1/2" to 6". Normal range of pressure is 12 kglcm2 and viscosity is 5000 cst.