Product Overview

Technical Data
314666
Service chilled or hot water, up to 60% glycol,
steam
Flow Characteristic modified equal percentage
Controllable Flow Range stem up - open A to AB
Size [mm] 2” [50]
End Fitting NPT female ends
Body bronze
Stem stainless steel
Stem Packing EPDM O-ring
Seat bronze
Plug brass
Body Pressure Rating [psi] ANSI 250
ANSI Class ANSI 250 (up to 400 psi below 150°F)
Max Inlet Pressure (Steam) 35 psi (241 kPa)
Media Temperature Range
(Water)
20°F to 280°F [-7°C to 138°C]
Media Temperature Range
(Steam)
32°F to 280°F [0°C to 138°C]
Maximum Differential Pressure
(Steam)
20 psi (103 kPa)
Max Differential Pressure (Water) 35 psi (241 kPa)
Rangeability 100:1
Cv 40
Leakage ANSI Class VI
Servicing repack kits available
Flow Pattern
Application
This valve is typically used in air handling units on heating or cooling coils, and
fan coil unit heating or cooling coils. Some other common applications include
unit ventilators, VAV box re-heat coils and bypass loops. This valve is suitable
for use in hydronic systems with variable flow. Bronze and stainless steel trim
valves can be used for steam applications, depending on actuator and close-off
combinations.
Suitable Actuators
Non-Spring Spring Electronic Fail-Safe
G250B-N LVB(X) NFB(X) LVKB(X)
Dimensions (Inches [mm])
E
F
B
A
C
D
LV
A B C D E F
10” [254] 6.12” [156] 9.92” [252] 8.01” [203] 1.93” [49]
Piping
The valves should be mounted in a weather-protected area in a location that
is within the ambient limits of the actuator. Allow sufficient room for valve
with actuator and for service. The G2 and G3 preferred mounting position of
the valve is with the valve stem vertical above the valve body, for maximum
life. However, the assemblies can be mounted with the valve stem vertical
or horizontal in relation to the pipe. The actuators should never be mounted
underneath the valve, as condensation can build up and result in a failure of
the actuators.
G250B-N, 2-Way, Globe Valve, Bronze Trim
800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA / CARIBBEAN
Date created, 12/18/2017 - Subject to change. © Belimo Aircontrols (USA), Inc.