Dwyer VF Visi-Float Series Acrylic Flow Meter
Dwyer VF Visi-Float Series Acrylic Flow Meter

Dwyer VF Visi-Float Series Acrylic Flow Meter

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Dwyer VF Visi-Float Series Acrylic Flow Meter are a line of direct reading, precision machined, clear acrylic body flow meters suitable for both gas and liquid applications. The fabrication of the Visi-Float® flow meters is backed by over 60 years of experience in acrylic instrument machining. This Series consists of 2″ (51 mm) and 4″ (102 mm) scales with optional precision metering valves.

Dwyer VF Visi-Float Series Features

  • 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 with metal mounting inserts that can be supported directly by system piping


  • Medical equipment
  • Laboratory equipment
  • Air samplers
  • Gas analyzers
  • Pollution monitors
  • Chemical injectors
  • Cabinet purging
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Dwyer VF Visi-Float Series Specification

Service Compatible gases and liquids.
Wetted Materials Body: Acrylic plastic; O-ring: Buna-N (fluoroelastomer available); Metal parts: Nickel plated brass standard, SS optional; Float: SS, black glass, aluminum, K monel depending on range.
Temperature & Pressure Limits Without Valve: 100 psig (6.9 bar) @ 150°F (65°C); 150 psig (10 bar) @ 100°F (38°C); With Valve: 100 psig (6.9 bar) @ 120°F (48°C).
Accuracy VFA = 5% of FS; VFB = 3% of FS.
Process Connection 1/8″ female NPT. VFB ranges 85 and 86 have 1/4″ NPT back connections or 3/8″ NPT end connections. These ranges not available with brass valves.
Scale Length VFA 2″ typical length; VFB 4″ typical length.
Mounting Orientation Mount in vertical position.
Weight VFA: 4.0 to 4.8 oz (.11 to .14 kg); VFB: 7.2 to 8.8 oz (.20 to .25 kg).
Agency Approvals Meets the technical requirements of EU Directive 2011/65/EU (RoHS II).

Download Data Sheet: Series VF Visi-Float® Acrylic Flow Meter

Ref: dwyer-inst.com

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