Tunstall Macon STV Series Manual page 54

Model US Union offers numerous end connections pressure/temperature
measurement and drain. The union has an EPDM O-ring seal and tailpiece
available in MNPT, FNPT and SWT end connections.
Standard features include Pressure/Temperature Port and Hose End Drain
Valve.
SPECIFICATIONS
Pressure Ratings:
Temperature Ratings:
Body Material:
End Connections:
Seals:
Available Options:
NOMINAL DIMENSIONS & WEIGHTS
SIZE
in mm
in
3/8" 10
mm
in
1/2" 15
mm
in
3/4" R 20R
mm
in
3/4" 20
mm
in
1" 25
mm
in
1-1/4" 32
mm
in
1-1/2" 40
mm
in
2" 50
mm
* Please reference the tailpiece data sheet #Bulletin-MB-TP for other sizes and connections.
Dimensions not for construction purposes unless certified by factory.
STANDARD COMPONENTS
Pressure/Temperature test port with brass body, dual durometer EPDM core, threaded 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 275°F (135°C)
Drain valve with forged brass body, chrome plated ball, Teflon seats, double EPDM O-ring stem
seals, aluminum handle, 3/4" hose connection with cap and plastic retainer strap.
Rated to 600 PSI (4140 kPa) WOG and 250°F (121°C)
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
600 PSI (4140 kPa)
250ºF (121ºC)
Forged Brass
Brass - Fixed End: SWT, FNPT
Union End: SWT, FNPT & MNPT
EPDM
"PTV" combination PT & Air Vent and
Port Extensions
A
B
FNPT SWT
N/A 1.86 2.52
N/A 47.24 64.00
1.99 1.88 2.52
50.47 47.68 64.00
2.04 2.12 2.75
51.82 53.90 69.85
2.04 2.12 2.52
51.82 53.90 64.00
2.15 2.28 2.75
54.56 57.85 69.85
2.39 2.56 3.11
60.63 65.05 78.99
2.39 2.69 3.11
60.63 68.35 78.99
2.49 3.03 3.43
63.30 76.96 87.12
*T
C
MNPT
1.83 0.75
46.48 19.05
1.83 0.38
46.48 21.08
2.07 0.98
52.56 24.89
1.83 0.98
46.48 24.89
2.07 0.92
52.56 23.37
2.45 1.43
62.23 36.32
2.48 1.17
60.96 29.72
2.75 1.50
69.85 38.10
Tunstall Corporation
118 Exchange Street · Chicopee, MA 01013
Phone (413) 594-8695 · Fax (413) 598-8109
Section: Components
54
Model US
Submittal Data
WEIGHT
lbs kg
0.94 0.43
1.04 0.49
0.97 0.44
1.24 0.56
1.39 0.69
2.48 1.18
2.79 1.33
3.77 1.82
Bulletin-MB-US-0915