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Series VFA & VFB
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Visi-Float® Flowmeters
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Used
to Indicate or Manually Control Air or Water Flow
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The Visi- Float® flowmeter bodies are cut and precision
machined from solid, clear acrylic plastic
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blocks. This construction not only produces a handsome finished
product, but permits complete
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visual inspection. As a result, the Visi- Float® flowmeters
are especially popular for medical and
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laboratory equipment applications.
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Scales are easy to read – The front scale location and white
background provides excellent
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visibility. The direct reading
scales are hot stamped into the plastic and will not wear off. Mid-range
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calibration is established with a
master flowmeter. Accuracy is +/-5% of full scale
for VFA models,
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+/-3% for VFB. Scales average 2” long on the VFA
models, 4” long on VFB.
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SPECIFICATIONS
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Service: Compatible gases & liquids.
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Wetted
Materials:
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Body:
Acrylic plastic;
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O-ring:
Buna-N (fluoroelastomer available);
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Metal
parts: Brass standard, stainless steel optional;
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Float:
Stainless steel, black glass, aluminum, K monel
depending on range.
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Temperature
& Pressure Limits:
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Without
Valve: 100 psig (6.9 bar) @ 150๐F (65๐C); 150 psig (10 bar) @100๐F
(38๐C);
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With
Valve: 100 psig (6.9 bar) @120๐F (48๐C).
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Accuracy: VFA = 5% of full scale; VFB = 3%
of full scale.
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Process
Connection: 1/8”
female NPT. VFB ranges 85 and 86 have ¼” NPT back connections or
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3/8” NPT
end connections. These ranges not available with brass valves.
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Scale
Length: VFA 2”
typical length; VFB 4” typical length.
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Mounting
Orientation:
Mount in vertical position.
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Weight: VFA: 4.0 to 4.8 oz (.11 to .14
kg); VFB: 7.2 to 8.8 oz (.20 to .25 kg).
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How
to Order
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Series –
Range No. (“X”)-Valve-Option
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Example: VFA-9-BV
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Series
VFA with 20-200 SCFH
Air Range
& Brass Valve
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VFA Series
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Model
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Description
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VFA-X
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Standard
VFA
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VFA-X-SS
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VFA with
Stainless Metal Wetted Parts
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VFA-X-BV
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VFA with
Brass Valve
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VFA-X-SSV
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VFA with
Stainless Steel Valve
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VFA-X-EC
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VFA with
End Connections
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VFA-X-EC-SS
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VFA with
End Connections and Stainless Steel Metal Wetted Parts
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OPTIONS
& ACCESSORIES
- PF, Red ABS Plastic Pointer Flag
- VIT, Fluoroelastomer
O-rings
RKA, Pressure Regulator
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