The ALDRICH Reciprocating Pump range includes vertical and horizontal plunger pumps that meet the highest performance requirements. These high-performance, positive displacement pumps are designed for high loads and reliability, delivering a constant volume flow regardless of pressure.
The ALDRICH product line provides maximum operating flexibility and is available in horizontal and vertical configurations and customer-specific materials. ALDRICH Reciprocating Pumps are engineered individually to meet the application's actual performance and installation requirements while reducing maintenance and replacement costs.
Meeting API 674 design and performance criteria, each pump is engineered to provide continuous-duty operation over a 20-year design life. Offering a wide variety of hydraulic, mechanical, and material options, ALDRICH Reciprocating Plunger Pumps can be constructed to meet the specific characteristics of the most demanding applications, including abrasive slurries and high viscosity liquids. This results in maximum operating flexibility with minimum life cycle costs.


  • High pressure with low flow
  • Variable flow with constant pressure
  • Constant flow with uneven pressure
  • High efficiency required
  • Fixed flow per revenue
  • Flow is independent of pressure
  • Pressure is independent of flow
  • High efficiency
  • Vertical and horizontal configurations
  • Sectionalized or monobloc liquid ends
  • Triplex, Quintuplex, Septuplex and Nonuplex plunger Configurations
  • Various plunger size/stroke combinations
  • High-temperature, high-pressure & slurry designs
  • Custom pressures for continuous duty pumping to 2070 bar
  • Wide range of liquid end stuffing box and power end sealing arrangements, including high-temperature or environmentally hazardous services
  • Wide choice of drive trains
  • API 674 certified



Depending on the application, ALDRICH plunger pumps use different pump ends and corresponding cylinder designs. The slurry pump end has been specially developed for pumping media containing solids such as minerals, ores, overburden, and coal. The solids’ content can be up to 60 % by weight.

Pump cylinders with a minimum of clearance volume are the economical solution for pumping liquid gases such as ammonia, CO2, LNG, and LPG. Minimizing the clearance volume is an essential method for improving the volumetric efficiency of pumping compressible media. This applies not only to process pumps but also to secondary recovery into caverns and oil fields.


A wide range of different valve variants in ball, plate, cone, or plug design is available for the various applications, ensuring reliable, low-maintenance operation.


The monobloc construction of the cylinder block is convincing due to its high operational reliability. This one-piece construction with internal suction and discharge channels ensures individual accessibility to the valves without disconnecting suction and discharge connections.

The multi-part design of the cylinder block is designed for exceptional operating conditions, such as very high media temperatures. Suction and discharge manifolds connect the individual cylinder blocks. Depending on the requirements, forged or cast cylinders are built-in.


The stuffing box designs are adapted to the different media. Plungers in different material designs matched to these media contribute to the reliable aperation of the machine.


Features of Horizontal Design Options
  • Plunger size: 25 mm up to 250 mm Plunger (1 to 10″)
  • Flow rate: up to 800 m³/h (3,500 GPM)
  • Power: up to 2,500 kW (3,350 HP)
  • Discharge pressure: up to 550 bar (8,000 PSI)
  • Discharge pressure in special cases: up to 2000 bar (30,000 PSI)
  • Temperature: from -40°C to 350°C (-40 to 660°F)
  • Speed: up to 530 RPM

The stated values are orientation values and can be adjusted according to the required operating conditions.

Features of Vertical Design Options
  • Plunger size: 38 mm to 229 mm Plunger (1,5 to 9″)
  • Flow rate: up to 1,100 m³/h (5,000 GPM)
  • Power: up to 3,450 kW (4,600 HP)
  • Discharge pressure: up to 600 bar (9,000 PSI)
  • Discharge pressure in special cases: up to 2,000 bar (30,000 PSI)
  • Temperature: from -40°C to 350°C (-40 to 660°F)
  • Speed: up to 360 RPM

The stated values are orientation values and can be adjusted according to the required operating conditions.