Tunstall Macon STV Series Manual page 27

Model MBF Manual Balancing Valve features a fabricated steel venturi flow
element. Mounted on the discharge is a ductile iron lug type butterfly valve
with gear operator. ANSI 125/150 flanged end connections. Dual extended
length Pressure / Temperature ports. Hanging I.D. Tag.
SPECIFICATIONS
Pressure Ratings:
Temperature Ratings:
Accuracy:
Body Material: Venturi:
Butterfly Valve: Ductile Iron A536 65-45-12
End Connections:
Disc:
Stem:
Seat:
Bushing:
Seal:
Metering Ports:
Available Options:
NOMINAL DIMENSIONS & WEIGHTS
SIZE
MODEL
in mm
8.0"
MBF-800 203.2
10.0"
MBF-1000 254.0
12.0"
MBF-1200 304.8
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.
Cv VALUE (US-GPM @ 1P)
MODEL SIZE
MBF-800 8.0"
MBF-1000 10.0"
MBF-1200 12.0"
Optional features and accessories available for this
Macon product are an extra charge, and not included
in the standard model price.
www.maconbalancing.com
200 PSI (1380 kPa)
225ºF (107ºC)
± 3% of flow rate
Carbon Steel ASTM A-120
ANSI Class 125/150# Flanged
Aluminum Bronze B148 C954
Stainless Steel 416 A582
EPDM with Phenolic Backing
Teflon/Fiberglass Backed
EPDM
Extended Length Pressure/Temperature test ports
"PTV" combination PT & Air Vent
A
in 15.88
mm 403.35
in 17.06
mm 433.32
in 19.30
mm 490.22
Cv Value when valve is in different opening angle
10º 20º 30º
3 89 188
4 151 320
5 234 495
B C
13.50 6.75 2.72
342.90 171.45 69.15
16.00 8.00 3.52
406.40 203.20 89.31
19.00 9.50 4.34
482.60 241.30 110.25
40º 50º
408 727 1202
694 1237 2047
1072 1911 3162
118 Exchange Street · Chicopee, MA 01013
Phone (413) 594-8695 · Fax (413) 598-8109
Section: Components
27
Model MBF
8" to 12"
Submittal Data
Weight
D E
lbs
17.46
145
443.50
18.72
200
475.50
20.63
333
524.00
60º 70º 80º
1903 2854
3240 4859
5005 7507
Tunstall Corporation
Bulletin-MB-MBF-800-1200-0915
kg
65.77
90.71
153.05
90º
3136
5340
8250