Griswold's H Series

Griswold pump logo
Griswold’s H Series consists of high-pressure pumps that are ideally suited where clean water needs to be delivered at high pressures. Unlike the standard end suction centrifugal pump, the Griswold H series maintains its prime even after check valves fail. The suction line is located at the higher part of the pump housing, keeping the impeller and mechanical seal covered with water at all times.


Griswold’s H Series consists of high-pressure pumps that are ideally suited where clean water needs to be delivered at high pressures.

Design Advantages

  • Cast iron ASTM A48 class 30 case with built-in drain and priming plugs
  • Bolt-on suction flange in variety of sizes to suit flow requirements
  • Self-priming with the suction line on top of the pump
  • Built-in check valves to prevent siphoning and the need for repriming
  • Enclosed bronze impeller with a single piece design
  • Impeller is balanced and trimmed according to specific operating range
  • Seals available in Carbon Ni-Resist FKM, Carbon Silicon Carbide FKM, Silicon Carbide FKM, and Silicon Carbide Tungsten FKM
  • Dual discharge connections

Available Options

We customise pumps according to your specific application. Get in touch with us today to get a complete list of your options.

  • Multiple seal options are available
  • Size and configuration options
  • Baseplate/mounting
  • Accessories and spare parts

Key Specifications

MAX FLOW 73.8 m³/hr


  • Draining Barges
  • Tank Cars
  • Underground Storage Tanks
  • Sprinkler Systems
  • Swimming Pools
  • Marine
  • Irrigation
  • Water Sumps


Centrifugal pumps are used to induce flow or raise a liquid from a low level to a high level. These pumps work on a very simple mechanism. A centrifugal pump converts rotational energy, often from a motor, into energy in a moving fluid.
The two main parts that are responsible for the conversion of energy are the impeller and the casing. The impeller is the rotating part of the pump, and the casing is the airtight passage that surrounds the impeller. In a centrifugal pump, fluid enters the casing, falls on the impeller blades at the eye of the impeller, and is whirled tangentially and radially outward until it leaves the impeller into the diffuser part of the casing. While passing through the impeller, the fluid is gaining both velocity and pressure.

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