Mtrl.nr. 9814 03 60 • Ritn.nr. 9178 utgp.A • Rev. 0908
+230
+32
+32
F
0515
Mpa/bar
Psi/bar
xxx/6
8Nm
6.0 lbf.ft
SERIES VTC500
Series VTC511
PED 97/23/EC
+230
145 /10
+32
0515
PSI/bar
F
Psi/bar
Max system pressure =
145psi (10 bar)
Max differential pressure between ports
14.5 psi (1bar) across the valve to ensure tight close off.
Max differential pressure between ports
4.35 psi (0.35 bar)
○ and □, △ and □ =
○ and △ =
Application Thermostat Element Installation
Valve
Location
Boiler
Outlet Line
Boiler
Protection
of Storage
Tank
Return Line
Tank Feed Line
Tank
Return Line
Boiler
Charging
Suitable
Thermostats
158°F (70C)
176°F (80C)
122°F (50°C)
131°F (55°C)
140°F (60°C)
158°F (70°C)
176°F (80°C)
All
Thermostat ordered separately
Code No. Opening Temperature
193B1702 122°F (50˚C)
193B1703 131
193B1704 140
193B1709 149
193B1705 158
193B1706 167
Thermostat
°F (55˚C)
°F (60˚C)
°F (65˚C)
°F (70˚C)
°F (75˚C)
VTC511
75˚C/176F
8Nm
6.0 lbf.ft
Boiler Outlet Mounted Boiler Return Mounted
Typical for 158F˚(70˚C)/176°F (80°C) Thermostats
Typical for 122°F (50°C)/131°F (55°C) /140°F (60°C) Thermostats
Gravity Conversion System or Hydronic Heating System Gravity Conversion-, Multi-Zone-, or Hydronic Heating - System Solar Heating
Piping Schematics are General Representations
Max 230°F (110 °C)
bar
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
100000
Proper Valve Selection
1”
PSI
11
10
9
8
7
6
5
4
3
3
2
1
0
0
10 15 20 25 30 355
2
Cv10
1-1/4”
Cv16
GPM
250 000
Btu
t
15°C/
27
°F
?
? GPM
250 000
Btu
△t=27°F
△t=36°F
(25°C)
△t=18°F
(10°C)
(15°C)
(20°C)
200 000
1
300 000
△t=45°F
?
400 000
Cv ?? bar
t
15°C/
27°F
Cv 100.22 bar
18 GPM
500 000
Btu/h
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