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Series-VFC-VFCII
Acrylic Flowmeter for Gas & Liquid – PVC/Acetal 1" NPT, NIST Option
Models In Stock
- Bodies are cut and precision machined from solid, clear acrylic blocks allowing for complete visual inspection
- White background allows for better visibility of the float increasing reading accuracy
- Direct reading scales are hot stamped into the plastic eliminating the need for troublesome conversions and increasing product operating life
- Precision machined tapered bore enables high repeatability
- Low installation costs with back or end connection options
Series-VFC-VFCII
From
$
197.70
Models In Stock
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Product Overview
- Accuracy ± 2 %
- Compliance Note Meets the technical requirements of EU Directive 2011/65/EU (RoHS II)
- Mounting Orientation Vertical
- Operating Temperature, Max 120 °F
- Measurement Pressure Type Gauge
- Process Connection Size 1 in
- Proof Pressure Up to 100 psi
- Scale Length 5 in
- Series ID Series-VFC-VFCII
- Valve Type N/A
- Weight 25 oz
Supported Applications
The Dwyer Series VFC Visi-Float® Acrylic Flowmeters are direct reading, precision machined flow meters designed for visual measurement of compatible gases and liquids. The series is utilized in applications including medical equipment, laboratory equipment, air samplers, gas analyzers, pollution monitors, chemical injectors, cabinet purging, remediation systems, and osmosis skids.
Operating Conditions & Performance
The Series VFC flowmeters operate within a temperature limit of 100 psig (6.9 bar) @ 120°F (48°C). Accuracy is specified as 2% of FS with high repeatability enabled by precision machined tapered bores. The typical scale length is 5" for the series, featuring hot-stamped direct reading scales that eliminate conversion requirements.
Popular measurement ranges documented in the range chart include:
- Air (SCFM): 4 to 25 SCFM Air, 5 to 50 SCFM Air, and 10 to 100 SCFM Air.
- Air (LPM): 100 to 700 LPM Air, 200 to 1400 LPM Air, and 300 to 2800 LPM Air.
- Water (GPM): .5 to 5 GPM Water, 1 to 10 GPM Water, and 2 to 20 GPM Water.
- Water (LPM): 2 to 20 LPM Water, 4 to 40 LPM Water, and 10 to 75 LPM Water.
The series meets the technical requirements of EU Directive 2011/65/EU (RoHS II).
Installation & Media Compatibility Notes
- Mounting: Mount in a vertical position with inlet at the bottom and outlet at the top.
- Torque Limit: Maximum recommended torque is 10 ft. (lbs) (13.56 newton (meter)). Hand tighten only; do not overtighten fittings or piping into meter.
- Incompatible Media: Avoid locations with strong chlorine atmospheres or solvents such as benzene, acetone, carbon tetrachloride, etc.
- Vacuum Service: Any flow control valve used must be installed on the discharge side of the flowmeter.
Configuration Options
The series consists of two basic styles: VFC and VFCII. Both feature bodies cut and precision machined from solid, clear acrylic blocks with a white background for float visibility. Wetted materials include an Acrylic plastic body; Buna-N O-rings (Fluorelastomer available); SS metal parts and floats; PVC fittings on the VFC; and Acetal thermoplastic fittings on the VFCII.
Process Connections
The series supports 1" NPT connections in various configurations:
- VFC Models: 1" female NPT (FNPT) back connections. End connections are optional.
- VFCII Models: 1" male NPT (MNPT) back connections. End connections are optional.
In-line end connection options include 1" FNPT and 1" MNPT configurations, identified by the -EC suffix in model numbers.
Options & Accessories
- -BSPT: BSPT process connections.
- -FDA: 316 SS float and guide rod (only available on VFCII with fluoroelastomer O-rings).
- -NIST: NIST traceable calibration certificate.
- -VIT: Fluoroelastomer O-rings.
Key Product Differences
The primary distinction between the two styles is the fitting material and thread gender. The VFC style utilizes PVC fittings with 1" female NPT back connections, while the VFCII style uses Acetal thermoplastic fittings with 1" male NPT back connections.
Model numbers follow the format Series-Range No.-Option (example: VFC-123-EC). The -EC suffix denotes an in-line end connection configuration. Range numbers correspond to specific flow capacities for air or water as listed in the range chart, with separate series of ranges available for SCFM Air, GPM Water, LPM Air, and LPM Water.
PDFs & Manuals
Show Ratings & Reviews
Rated 5 out of
5
by
Anonymous from
Dwyer Rotameter
Excellent product that works flawlessly. I can always count on receiving products in a timely manner
Date published: 2026-07-16
Rated 5 out of
5
by
Beaufort Bob from
Flow Tubes
Very quick service, very fair price. Quality products.
Date published: 2026-01-19
Rated 5 out of
5
by
R Y A N from
Flowmeter
The flowmeter is exactly what I ordered and came in on time
Date published: 2025-09-02
Rated 5 out of
5
by
Ryan O from
Buyer
Worked exactly how I wanted it to. Came in quickly
Date published: 2025-08-28
mentioned its suitable for gas application .what type of gases suitable helium,argon etc..?
Hello,
We do not provide a comprehensive list of media compatible with our units. It is up to the end-user to ensure the media they use the unit with is compatible with the wetted materials. This unit has the following wetted materials: Body: Acrylic plastic; O-ring: Buna-N (fluoroelastomer available); Metal parts: SS; Float: SS; Fittings: VFC: PVC.
Date published: 2026-02-10
