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Mud Pump
N3NB-500 Mud Pump
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Description

Features
1.Power End
The power pump shell is the structure of steel plate welding and has been tested with its intensity by authority. The crankshaft is a composed structure of straight shaft and eccentric wheel. Its airproof part of elastic ripple tube has been awarded a patent certificate by the state. The transmission gear is of medium hard side to improve the enduring ability.
2.Fluid End 
Liquid power side valve is of whole forging with a vertical structure, the volume interstice is minimum. The k1:6 wimble surface has been processed by roll pressing and therefore is improved significantly with its cooperative precision. The water supply valve is fastened reliably and conveniently. The valve box and the base holes conform to APL standard. 
3.Design Features
Parameters were optimized and the stroke has been lengthened appropriately to reduce the number of strokes to enhance the intake performance of the pump and for longer endurance of the relatively weak parts. The pumps are widely used in oil fields and other industrial and mining enterprises, well drilling and well maintenance, etc. The serial products are produced strictly by SY5138 standards established by the Petroleum Industry Ministry of China and factory-leaving experiments are carried out accordingly. 

Parameters
Model Type Rated Stroke Rated Power Gear type Gear Ratio Suction Pipe Diameter
N3NB-500 Triplex piston single role 500 Hp 165r/min Herringbone gear 4.285 :1 203mm
Discharge Pipe Diameter Small diameter gear Bond Valve Weight Lubrication
101.5mm5000psi 139.6mm 31.74×1.74mm Valve valve on theAPI#5 9771Kg Spatter lubrication
 
Stroke
/min
Rated Power Liner diameter(mm)& Pressure Mpa(psi)
170 160 150 140 130 120 110 100
9.4 10.5 12.1 13.9 16.1 22.5 22.5 27.2
  KW HP Displacement(L/S)(gal./s)
170 379 515 36.75 32.56 28.61 24.93 21.49 18.31 15.39 12.72
165※ 373 500 35.67 31.60 27.77 24.19 20.86 17.77 14.93 12.34
150 334 455 32.43 28.73 25.25 21.99 18.96 16.16 13.58 11.22
140 312 424 30.27 26.81 23.56 20.53 17.70 15.08 12.67 10.47
130 290 394 28.11 24.90 21.88 19.06 16.44 14.00 11.77 9.73
120 267 364 25.94 22.98 20.20 17.60 15.17 12.93 10.86 8.98
110 245 333 23.78 21.07 18.52 16.13 13.91 11.85 9.96 8.23
1     0.2162 0.1915 0.1683 0.1466 0.1264 0.1077 0.0905 0.0748

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