Accurate, Reliable Flow Measurement

Warminster’s FRP Parshall flumes provide precise, long-term flow measurement for water and wastewater treatment systems.

Molded from corrosion-resistant fiberglass-reinforced plastic (FRP), these flumes offer excellent dimensional stability and low maintenance—making them an ideal choice for new construction and plant rehabilitation projects.

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Built for Water & Wastewater Applications

Parshall flumes are widely used in:

  • Wastewater treatment influent channels
  • Effluent flow monitoring
  • Industrial discharge measurement
  • Irrigation and stormwater systems
  • Plant retrofits and expansions

One-Piece Molded Construction

Each FRP Parshall flume is manufactured as a single molded piece for maximum accuracy and ease of installation. Benefits include:

  • No field seams or joints
  • Smooth, consistent flow surfaces
  • Excellent hydraulic accuracy
  • Uniform wall thickness
  • Superior resistance to corrosion and abrasion

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Parshall Flumes Available in Standard and Custom Sizes

Warminster fabricates Parshall flumes in all standard throat widths. Custom dimensions are also available for unique applications or to match existing infrastructure.

Options include:

  • Standard size range per industry specification
  • Custom transitions, wing walls, and end treatments
  • Weir plates and stilling wells
  • Staff gauges
  • Bubbler tubes and measurement instrumentation cutouts

FRP Components Reinforced for Structural Stability

Our flumes are manufactured using corrosion-resistant fiberglass laminates with internal reinforcement for rigidity. Key features include:

  • Integral rib stiffeners
  • UV-resistant gelcoat interior and exterior
  • Lightweight design for easy handling
  • Smooth surfaces to minimize debris buildup
  • Mounting systems for concrete or steel structures

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FRP Parshall Flumes Built to Industry Standards

Warminster’s Parshall flumes are manufactured using materials that meet ANSI/AWWA F101 standards for FRP construction. When required, we can also supply components that support:

  • Buy America / Build America (BABA)
  • American Iron & Steel (AIS)
  • Additional municipal or engineering requirements

These compliance options ensure compatibility with federally funded treatment plant projects.

Long-Term Performance and Low Maintenance

FRP Parshall flumes provide dependable flow measurement with minimal maintenance needs. Their corrosion resistance, hydraulic accuracy, and long service life make them an excellent replacement for metal or concrete structures in demanding environments.

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