Dry Prime Trash Pumps Solids Handling Dry Prime Compressor Assisted

Updated Aug 3, 2010

Thompson engineers developed a series of high pressure jet pumps that can handle liquids with larger solids and more air than standard end-suction centrifugal pumps. By increasing the impeller size and adding the ENVIROPRIME Compressor-Assisted Priming System, Thompson JSC High Pressure Jet Pumps are able to pass solids up to 4-inches in size and able to prime dry and re-prime automatically. These features make the Thompson JSC Series High Pressure Jet Pumps perfect for use on a wide range of jetting, dewatering and bypassing applications.


Construction: Wellpoint installation; pilings; seawall installation; equipment wash down; dewatering excavations, canals and sumps; extended sumping

Waste Treatment: Sewer bypasses; pumping polluted hot or corrosive wastewater containing sand, mud or solids in suspension; force main pumping; dosing neutralizing liquids; pumping out settled sludge

Industry: Water jetting and blasting; piping system surcharging and pressure testing; waste pumping; flood drainage; fire fighting; recovery of hazardous liquids; transfer of neutral, acid or alkali clean or dirty liquids containing sand, mud or solids in suspension

Mining: Wash-down operations; tailings; high head/high volume applications

Marine: Barge cleaning and wash down; pile jetting; dock installation

Agriculture: Irrigation; dust abatement

Note: Alternate pump end materials available for corrosive liquids


  • Exclusive ENVIROPRIME® Compressor-Assisted priming system on all models
  • Capability of dry priming and automatic re-priming
  • Large solids handling capability – up to 3.38″
  • High pressure capability for jetting or pumping into force mains
  • High capacity performance
  • End-suction centrifugal pump end
  • Heavy-Duty cast iron casing and brackets
  • Stress-proof stainless steel shaft sleeves
  • Bronze impeller and wear rings
  • Abrasion-resistant tungsten carbide vs. silicon carbide mechanical seal
  • Discharge priming valves
  • Suction and discharge fittings
  • Safety shutdown controls
  • Variable speed engine control
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