In practice triplex pumps have the following advantages:

      The triplex pump provides a more even delivery so that discharge variations are about half those of a duplex pump. This provides a longer life of pump parts,  hoses, etc.

      The total weight of a triplex pump is approximately 70 % of that of a duplex pump with the same capacity and it also requires less space.

      Triplex pumps are more accessible than duplex pumps and consequently, maintenance is faster and cheaper.

Design features:

      pump power and pressure on each piston diameter allow forced drilling practices;

      forged fluid ends made of high-strength alloyed steel;

      ion nitriding of the gear transmission;

      hydraulic seal of the cylinder and piston assembly;

      double-chamber seal of the slide block rod for excluding oil leakage from the case, its contamination with drilling mud;

      lubrication of reduction gear through two systems:

 -pressure lubrication with automated maintaining of constant pressure in the oil line;

 -gravity oil system lubrication from storage trays;

      safety valve of the locking device;

      drive transmission at any side of the pump or at the both sides;

      suction and discharge headers for pipes connection from both sides.

3NB series mud pump basic parameters: