Chemical Pump - Durco PolyChem GRP Non-Metallic

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Durco PolyChem GRP pump is an end suction, single-stage, centrifugal pump made in accordance with ASME B73.1 regulations. The pump is created using Glass Reinforced Phenolic (GRP), which is known for its economical price, long life, and superior corrosion resistance. A GRP pump is often preferred over expensive high-alloy metal pumps for handling extremely corrosive materials such as acid, chlorine, and saltwater.



Durco PolyChem GRP

FLOW UP TO 34,167 LPM (Liters per minute)
or 2050 m3/hr

Features & Benefits

  • Made of composite material for cost-effective corrosion resistance, non-galling, non-sparking and non-conductive attributes
  • Tapered polygon impeller drive for exceptional torque-carrying ability and strength
  • Semi-open impeller for consistent high efficiencies
  • External micrometre impeller adjustment allows for quick and accurate impeller setting
  • Fully gusseted centerline discharge casing with integrally moulded flanges for optimal nozzle-loading capabilities
  • Uses Mark 3™ power end design, which conforms to ASME B73.1 design standards, and is engineered to maximise performance and reliability

Available Options

Durco PolyChem GRP comes with a range of options to meet your application’s special requirements. Get in touch with our experts for more information.

  • Sealing options
  • Open impeller option
  • Baseplates
  • ClearGuard and DurcoShield pump guards
  • Spare parts
  • 16 standard pump sizes
  • Horizontal, end-suction and vertical, non-metallic configurations

Key Specifications

  • Flows to 2050 m3/h (9000 gpm)
  • Heads to 150 m (500 ft)
  • Pressures to 17 bar (250 psi)


Self-priming — horizontal, end suction, top discharge

  • Flows to 115 m3/h
  • Heads to 115 m

VGRP — vertical, non-metallic sump

  • Flows to 565 m3/h
  • Heads to 110 m
  • Pressures to 17 bar


  • Pulp & Paper
  • Mining
  • Steel & Primary Metals
  • Corn Wet Milling & Ethanol
  • Other Industries
  • Organic & Inorganic Chemicals
  • Specialty Chemicals
  • Biofuels
  • Petrochemicals
  • Water Management
  • Wastewater
  • Conventional Steam
  • Combined Cycle
  • Biomass & MSW


With corrosion resistance superior to many more expensive, highly alloyed metals and with costs closer to that of ductile iron, the PolyChem GRP has proven to be the low-cost, long-term solution in acidic and chloride-rich applications.


Made of premium Derakane® vinyl ester resin reinforced with randomly oriented glass fibers, the GRP pump is designed to ASME B73.5M standards for chemical process pumps.


GRP wet-end components are compression molded at high temperatures and pressures to evenly distribute reinforcing fibers. This results in Smooth hydraulic passages; High efficiencies; Lower operating costs; High structural strength.


Industrial Chemical Pumps

In Durco PolyChem centrifugal pumps, fluid enters the impeller through the “eye” and is “centrifuged” (hence the name) to the impeller periphery. As the impeller rotates, it imparts kinetic energy onto the fluid. The impeller vanes have channels with an increasing flow path area. As the flow path area expands, the passing fluid’s velocity decreases and the pressure increases. The fluid then falls to the volute. Due to the unique shape of the volute casing, the fluid undergoes a further velocity decrease and pressure increase. This causes the liquid to be discharged through the discharge port.

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