Tunstall Macon STV Series Manual page 31

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.
SPECIFICATIONS
Pressure Ratings:
Temperature Ratings:
Accuracy:
Body Material: Venturi:
End Connections:
Metering Ports:
Available Options:
NOMINAL DIMENSIONS & WEIGHTS
SIZE
MODEL
in mm
VF-250 2-1/2" 65
3" 75
VF-300
VF-400 4" 100
5" 125
VF-500
VF-600 6" 150
Dimensions not for construction purposes unless certified by factory.
STANDARD COMPONENTS
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)
Please reference data sheet #Bulletin-MB-Accessories for optional accessories.
Optional features and accessories available for this
Macon product are an extra charge, and not included
in the standard model price.
www.maconbalancing.com
240 PSI (1655 kPa)
250ºF (120ºC)
± 3% of flow rate
Carbon Steel ASTM A-120
ANSI Class 150# Flanged
Optional ANSI Class 300# Flanged
Extended Length Pressure/Temperature test ports
"PTV" combination PT & Air Vent
A B
in 7.00 7.00
mm 177.80 177.80
in 8.00 7.50
mm 203.20 190.50
in 9.50 9.00
mm 241.30 228.60
in 11.00 10.00
mm 279.40 254.00
in 12.50 11.00
mm 317.50 279.40
C D
4.20 3.12
106.65 79.38
4.54 3.38
115.29 85.73
5.02 3.38
127.48 85.73
5.53 3.88
140.49 98.43
6.04 3.88
153.39 98.43
Tunstall Corporation
118 Exchange Street · Chicopee, MA 01013
Phone (413) 594-8695 · Fax (413) 598-8109
Section: Components
31
Model VF
2.50" to 6.00"
Submittal Data
Weight
E
lbs kg
0.74
20 9.08
18.75
0.88
25 11.35
24.48
1.19
36 16.33
30.35
1.31
45 20.41
33.27
1.60
55 24.95
40.64
Bulletin-MB-VF-250-600-0915