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PolyChem GRP Chemical Process Pump

Durco PolyChem GRP Engineered Polymer Composite, Sealed, ASME (ANSI) Chemical Process Pump

BRAND: Durco

The PolyChem GRP pump is a single-stage, end suction, centrifugal pump designed to ASME B73.1 standards. This product is constructed in Glass Reinforced Phenolic (GRP), which offers a cost-effective means of corrosion resistance as a more expensive high-alloy metal pump at a fraction of the cost. The PolyChem GRP pump has proved to be a cost-saving, long-term solution in acidic, chloride-rich and salt water applications.


  • General Industry
  • Chemicals
  • Water
  • Power

industry sectors

  • Pulp & Paper
  • Mining
  • Steel & Primary Metals
  • Corn Wet Milling & Ethanol
  • Other Industries
  • Basic (Organic & Inorganic)
  • Specialty (Fine & Consumer)
  • Biofuels
  • Water
  • Waste Water
  • Conventional Steam
  • Combined Cycle
  • Biomass and MSW

Designed to ASME B73.1 Standards

Operating Parameters

Flows to 2050 m3/h (9000 gpm)
Heads to 150 m (500 ft) 
Pressures to 17 bar (250 psi) 
Temperatures from -45°C  to 120°C (-50°F to 250°F)

Design Range


Sixteen Sizes

• Four (4) Group 1

• Nine (9) Group 2

• One (1) Group 3

• Two (2) Above ASME Group 4*

* Wet-end consists of Ethylene tetrafluoroethylene (ETFE) lined Ductile Iron

Features & Benefits
  • Engineered composite material construction offers cost-effective corrosion resistance and is lightweight, non-galling, non-sparking and non-conductive.
  • Tapered polygon impeller drive provides exceptional torque-carrying ability and unequaled strength for optimum durability.
  • Externally adjustable, semi-open impeller is inherently balanced, resulting in consistently high efficiency rates.
  • Centerline discharge casing with integrally molded flanges is fully gusseted for optimal nozzle-loading capabilities.
  • Radial fit and square O-rings for the casing and impeller protect the shaft from corrosive process.
  • Incorporates the Mark 3™ power end design, which conforms to ASME B73.1 design standards, and is engineered to maximize performance and reliability.
  • External micrometer impeller adjustment — Design incorporates an external micrometer impeller adjustment, which allows for quick and accurate impeller setting.

Several configurations constructed in GRP material:

Standard — horizontal, end suction, top discharge — 16 sizes

  • Flows to 2050 m3/h (9000 gpm)
  • Heads to 150 m (500 ft)
  • Pressures to 17 bar (250 psi)
  • Temperatures from -45°C to 120°C (-50°F to 250°F)

Self-priming — horizontal, end suction, top discharge — one size

  • Flows to 115 m3/h (500 gpm)
  • Heads to 115 m (375 ft)

VGRP — vertical, non-metallic sump — 14 sizes

  • Flows to 565 m3/h (2500 gpm)
  • Heads to 110 m (350 ft)
  • Pressures to 17 bar (250 psi)
  • Temperatures from -30°C to 90°C (-20°F to 200°F)
  • Pit depths to 4.25 m (14 ft); 6.75 m (22 ft) with optional tailpipe


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