Product Description
0.06–0.5 LPM Air Acrylic Flowmeter – Visi-Float® VFA-21 (No Valve)
The Series VF Visi-Float® VFA-21 Flowmeter is engineered for ultra-low-range air-flow indication in laboratory, medical, and industrial systems where external control valves regulate flow.
Machined from solid clear acrylic and fitted with a hot-stamped direct-reading scale, this compact rotameter delivers excellent visibility, dependable repeatability, and long service life in trace-flow monitoring applications.
Flow Range, Accuracy & Operating Limits
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Air Flow Range: 0.06–0.5 LPM
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Scale Length: 2 in
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Accuracy: ±5 % F.S. (VFA models)
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Service: Compatible gases & liquids
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Mounting Orientation: Vertical only
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Pressure / Temperature Limits:
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100 PSIG @ 150°F (no valve)
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150 PSIG @ 100°F (no valve)
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Construction & Wetted Materials
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Body: Clear acrylic
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O-Rings: Buna-N (fluoroelastomer optional)
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Metal Parts: Nickel-plated brass
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Float: Stainless steel / glass / aluminum (range-dependent)
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Valve: None — external flow control required
Process Connections & Mounting
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Connection: 1/8″ Female NPT
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Mounting: Vertical orientation
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Pipe Support: Metal mounting inserts
Typical Applications
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Trace air-flow indication
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Medical systems
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Laboratory instrumentation
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Air samplers
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Gas analyzers
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Pollution monitoring
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Chemical injection
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Cabinet purging
Why Choose the Visi-Float® VFA-21?
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Ultra-micro 0.06–0.5 LPM range
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Indicator-only design integrates with existing valves
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Direct-reading scale eliminates conversions
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Clear acrylic body allows inspection
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Precision-machined tapered bore ensures repeatability
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Compact panel footprint
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Cost-efficient base configuration
Compliance & Approvals
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RoHS II compliant (EU Directive 2011/65/EU)
Shipping Information
Ships in 1–2 business days, subject to availability.
