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Purge Flow Meters

Flushable & Winterization-Ready Flow Measurement

Flushable Flow Meter
Flushable Flow Meter

Reliable Flow Measurement — Even in Harsh, Clog-Prone Environments

Our Mechanical Flow Meters with Integrated Flush / Purge Systems are designed for applications where standard flow meters are vulnerable to clogging, buildup, or freeze damage. Built on a proven mechanical flow meter platform, this enhanced design allows operators to flush internal components or purge the meter completely, extending service life and reducing downtime.

Featuring a sturdy in-line metal construction, these meters provide accurate, repeatable flow measurement with a large, easy-to-read analog dial calibrated in standard engineering units (GPM, LPM, cc/min). Available in Bronze or 316 Stainless Steel, they are suitable for demanding industrial environments and chemically compatible fluid systems.

Why Choose a Flushable Flow Meter?

Unlike conventional mechanical meters, this model incorporates integrated flushing and purge components, allowing the meter to be cleaned or drained without removal from the line. This makes it ideal for processes involving solids, emulsions, or fluids that may harden, settle, or freeze.

Originally developed for the latex-modified concrete industry, these meters have proven to be exceptionally durable and adaptable across a wide range of fluid handling applications.

Key Features & Benefits

  • Integrated Flush / Purge Capability
    Built-in equalizing valve and 3-way ball valve allow the meter to be flushed with water or purged for winterization without disassembly.
  • Large, High-Visibility Dial
    3.5 in. (90 mm) 270° analog dial provides quick, at-a-glance readings even in low-light or dirty environments.
  • Wide Flow Range
    Available from 4 GPH (15 L/hr) in ½″ meters up to 3,000 GPM (12,000 L/min) in 8″ meters.
  • Versatile Fluid Compatibility
    Suitable for clear or opaque fluids, including water-based solutions and suspensions.
  • Accurate & Repeatable Measurement
    6:1 turndown ratio with ±3% of full-scale accuracy.
  • Easy Installation & Configuration
    Factory-configured dial and case for fast installation; easily re-configured in the field if system requirements change.
  • Durable Materials of Construction
    Available in Bronze or 316 Stainless Steel for corrosion resistance and long service life.

Typical Applications

  • Water and process water systems
  • Latex-modified concrete batching and delivery
  • Water-soluble paints and coatings
  • Chemical and additive injection systems
  • Seasonal or outdoor systems requiring winterization
  • Industrial processes with solids or buildup risk

Principle of Operation

The flush / purge flow meter is based on a rugged mechanical metering mechanism, enhanced with an integrated equalizing valve and 3-way ball valve. These components allow operators to:

  • Flush clean fluid through the pressure ports and bellows chamber to remove residue
  • Drain trapped liquid to prevent solidification or freeze damage
  • Maintain meter accuracy and extend service life in harsh operating conditions

This design prevents internal fouling while maintaining the simplicity and reliability of a mechanical flow meter — no power required, no electronics to fail.

Built for Reliability. Designed for Longevity.

If your process involves fluids that can clog, harden, settle, or freeze, a standard flow meter may not be enough. Our Flow Meters with Flush / Purge Systems provide the durability, serviceability, and accuracy needed to keep your operation running reliably year-round.