Hach sc200, User Manual

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9
G3…(D) 3-way Globe Valve, Bronze Trim
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 Ventila-
tors, VAV Box reheat coils and bypass loops. This valve is suitable for use in a hydronic
system with constant or variable fl ow.
3-way valves are available with mixing or diverting fl ow patterns.
Valve Nominal Size Type Suitable Actuators
C
v
Inches DN [mm] 3-way NPT
Non-
Spring
Spring Electronic
Fail- Safe
2.2 ½ 15 G314
LV
Series
LF
Series
LVK
Series
4.4 ½ 15 G315(D)
7.5 ¾ 20 G320(D)
14 1 25 G325(D)
SV Series
NF
SVK Series
20 1¼ 32 G332(D)
28 1½ 40 G340(D)
AF(X)
Series
41 2 50 G350
40 2 50 G350(D)
Dimensions
B
A
D078-3W
Valve Nominal Size Dimensions (Inches [mm])
Valve Body Inches DN [mm] A B
G314 ½” 15 3.06” [78] 1.37” [35]
G315(D) ½” 15 3.06” [78] 1.37” [35]
G320(D) ¾” 20 3.62” [92] 1.68” [43]
G325(D) 1” 25 4.62” [117] 1.56” [40]
G332(D) 1¼” 32 4.62” [117] 1.62” [41]
G340(D) 1½ 40 5.37” [137] 1.62” [41]
G350(D) 2 50 6.12” [156] 1.87” [48]
Technical Data
G3 G3...D
Service chilled or hot water, 60% glycol
Flow characteristic linear
Action stem up - open B to AB stem up - open B to AB
Sizes ½” to 2”
End fi tting NPT female ends
Materials
Body
Seat
Stem
Plug
Packing
Disc bronze
bronze
stainless steel
brass
spring loaded TFE
none
ANSI class ANSI 250 (up to 400 psi below 150°F)
Leakage ANSI III
Media temperature
water 20°F to 250°F (-7°C to 120°C)
Maximum
Δ
P* water
35 psi (241 kPa)
Rangeability 500:1
Valve weights G314, G315(D)
G320
G320D
G325, G332(D)
G325D
G340(D), G350(D) 2 lbs
3 lbs
2.5 lbs
2.5 lbs
5 lbs
14 lbs
*(50% or more open)
G3...(D) 3-way Flow Patterns
G3 3-way Mixing Valve G3…D 3-way Diverting Valve
A
Stem Up- Open B to AB Stem Up- Open B to AB
Note: Flow B to A travels through center of plug
(as shown).
Piping
The valves should be mounted in a weather-protected area in a location that is within
the ambient limits of the actuator. Allow suffi cient room for valve with actuator and
for service. Please allow 12” for complete actuator/linkage removal. The G2(S) and
G3(D) 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. Do not reverse fl ow direction.
N40021 - 03/13 - Subject to change.
© Belimo
Aircontrols (USA),
Inc.