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565 Series Flowmeter

Variable area flowmeter for scientific gas applications
5654311-01-000 shown

The 565 Series Flowmeter offers inherent simplicity, versatility, and economy in a precision flow instrument. The 2.6-inch (65 mm) scale is preferred in industrial panel-mounting applications and for direct mounting to a pressure regulator. Flow readings from the millimeter scale are converted to actual flow using the calibration chart provided with the flow tube. CONCOA offers a wide variety of flow tube and float combinations to provide the most precise flow control for many gas service applications.

Flowmeter Wizard - try the flowmeter wizard today!
  • Rib-guided tube internals provide precise stable flow readings
  • Rotating magnifier lens enhances reading resolution
  • Field changeable flow tube promotes installation flexibility
  • Max pressure: 200 PSIG (14 BAR)
  • Max temperature: 250°F (121°C)
  • Flow tube: Heavy-walled borosilicate glass
  • Front shield: Polycarbonate
  • End connections: Brass or 316L stainless steel
  • Seals: FKM, EPDM (optional); or Kalrez® (optional)
  • Accuracy: ± 5% full scale
  • Repeatability: 0.25% full scale
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Determine part number tube (A) and float (B) from specific air flow

Flow Units

Tube Size (A)
Float Material (B)
Max Flow for float/tube (air, atmospheric conditions)

Max flow for float/tube (your parameters)

Scale Size
Frame Material (C)
Valve (D)
End Connection (CON)
Your CONCOA flowmeter part number is:
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Please confirm the compatibility of any toxic or corrosive gas with CONCOA for the selected flowmeter before placing your order.
First, select the major component of the mixture. Then, select one or more minor components from the right-hand side (scroll on mobile!) and enter the composition percentage.
Major Component
No minor gases selected yet.
Minor Components
Weight (%)
Specific Gravity

A specific gravity of ___ will be used in the flowmeter wizard after clicking OK.
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ID Number
565 Series Flowmeters Catalog Page
560 and 565 Series Flowmeters Installation and Operation Instructions
CONCOA Scientific Research Apparatus Brochure

WARNING: This product can expose you to chemicals including Lead, Chromium, Nickel, and 1-3 Butadiene, which are known to the state of California to cause cancer, birth defects, or other reproductive harm. And, this product can expose you to chemicals including Bisphenol A (BPA) which is known to the State of California to cause female reproductive harm. For more information go to www.

Kalrez® is a registered trademark of DuPont Performance Elastomers