
Optional features and accessories available for this
Macon product are an extra charge, and not included
in the standard model price.
www.maconbalancing.com
Tunstall Corporation
118 Exchange Street · Chicopee, MA 01013
Phone (413) 594-8695 · Fax (413) 598-8109
Section:
Components
Bulletin-MB-VF-250-600-0915
Model VF
2.50” to 6.00”
Submittal Data
Model VF Venturi Flowmeter features a cast steel venturi flow element. The
precision machined throat provides measurement accuracy of ± 3% of flow
rate. ANSI 125/150 flanged end connections. Dual extended length Pressure/
Temperature ports and Hanging I.D. Tag.
NOMINAL DIMENSIONS & WEIGHTS
MODEL
SIZE
A
B
C
D
E
Weight
in mm
lbs kg
VF-250
2-1/2”
65
in 7.00 7.00 4.20 3.12 0.74
20 9.08
mm 177.80 177.80 106.65 79.38 18.75
VF-300
3” 75
in 8.00 7.50 4.54 3.38 0.88
25 11.35
mm 203.20 190.50 115.29 85.73 24.48
VF-400
4” 100
in 9.50 9.00 5.02 3.38 1.19
36 16.33
mm 241.30 228.60 127.48 85.73 30.35
VF-500
5” 125
in 11.00 10.00 5.53 3.88 1.31
45 20.41
mm 279.40 254.00 140.49 98.43 33.27
VF-600
6” 150
in 12.50 11.00 6.04 3.88 1.60
55 24.95
mm 317.50 279.40 153.39 98.43 40.64
Dimensions not for construction purposes unless certified by factory.
STANDARD COMPONENTS
Please reference data sheet #Bulletin-MB-Accessories for optional accessories.
Pressure / Temperature test port with brass body, dual durometer EPDM core, PTE Extender, brass cap
with O-ring seal and neoprene retainer strap. Accepts standard 1/8” (4mm) gauge adapter or
thermometer stem. Rated to 500 PSI (3450 kPa) and 275ºF (135ºC)
SPECIFICATIONS
Pressure Ratings:
240 PSI (1655 kPa)
Temperature Ratings:
250ºF (120ºC)
Accuracy:
± 3% of flow rate
Body Material:
Venturi:
Carbon Steel ASTM A-120
End Connections:
ANSI Class 150# Flanged
Optional ANSI Class 300# Flanged
Metering Ports:
Extended Length Pressure/Temperature test ports
Available Options:
“PTV” combination PT & Air Vent
MANU
AL
31
Summary of Contents for Macon AB Series
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