PSG Dover Group

Delivering Tomorrow’s Innovative Fluid and Material Transfer Solutions Today

PSG® is the global leader in the manufacture of pumps, systems and related flow-control solutions for the safe, efficient and reliable transfer of critical and valuable materials. PSG features world-class pump brands – Blackmer®, Mouvex®, Griswold™ – committed to servicing key vertical markets that include Hygienic, Chemical and Energy.

  • Blackmer
    • Blackmer is a leading manufacturer of positive displacement pumps, centrifugal pumps and compressors for the transfer of liquid and gas products. Blackmer provides innovative product transfer solutions for the following markets:

      Chemical Processing, Soap & Detergents, Paint & Coatings, Liquid Terminals, Oil & Gas, Biodiesel, Refined Fuels, Liquified Gases, Diesel Exhaust Fluid (DEF), Truck & Transport, Liquid Terminals and Military & Marine.

      Products include:
      • Sliding Vane Pumps
      • System One Centrifugal Pumps
      • Reciprocating Gas Compressors


      Contact us for more information about Blackmer products or to plan your custom solution.

  • Mouvex
    • A Century of Innovation and Performance

      Mouvex is a leading manufacturer of positive displacement pumps and compressors for the transfer of liquids or dry bulk products worldwide. 

      Eccentric movement technology is at the core of Mouvex. Eccentric disc pumps consist of a cylinder and pumping element mounted on an eccentric shaft. As the eccentric shaft is rotated, the pumping element forms chambers within the cylinder, which increase in size at the intake port, drawing fluid into the pumping chamber. The fluid is transported to the discharge port where the pumping chamber size is decreased. This action squeezes the fluid out into the discharge piping.

      Products include:
      • Eccentric Disc Pumps
      • Sliding Vane Pumps
      • Rotary Vane Pumps
      • Peristaltic Hose Pumps


      Contact us for more information about Mouvex products or to plan your custom solution.

  • Griswold
    • Quality. Value. Delivery.

      Griswold Pump Company provides a broad range of pumps for oil & gas, chemical process, industrial, and municipal applications. Griswold designs, engineers, and manufactures a variety of pumps including ANSI, end suction centrifugal, and self-priming.

      Products include:
      • 811 ANSI Pumps
      • End Suction Centrifugal Pumps
      • Self Priming Pumps


      Contact us for more information about Griswold products or to plan your custom solution.

  • EnviroGear
    • For challenging industrial applications involving both thin and viscous liquids

      Pumps group features a complete range of internal gear pumps giving it the full capability to accommodate a wide range of applications. Internal gear pumps are ideally suited where a wide range of viscosities are prevalent and excel in higher viscosity applications. 

      EnviroGear Pumps includes the following technologies:

      • E Series Seal-less Internal Gear Pumps
      • G Series Sealed Internal Gear Pumps

      Gear Pumps displace fluid by the gears coming in and out of mesh, which draws the fluid into the pump and then forces the fluid through the discharge and downstream of the pump. The meshing actions of both the internal and external gear pumps are different by design.

      Internal gear pumps have a rotator and idler gear that come in and out of mesh, while external gear pumps have two coinciding gears that come in and out of mesh—this meshing is what creates the pumping action for both pumps. The overall area between each gear tooth ultimately determines the best-suited viscosity ranges for each type of gear pump.


      Contact us for more information about EnviroGear products or to plan your custom solution.

      Process Pump Equipment


Please contact us with questions or to plan your custom solution.

(800) 452-7867

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