Hach sc200, Руководство пользователя

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800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA
8
G2…(S) 2-way Globe Valve, Bronze or Stainless Steel 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 variable fl ow.
Bronze and stainless steel trim valves can be used for steam applications, depending on
actuator and close-off combinations.
Valve Nominal Size Type Suitable Actuators
C
v
Inches DN [mm] 2-way NPT
Non-
Spring
Spring Electronic
Fail- Safe
0.4 ½ 15 G212(S)
LV
Series
LF Series
LVK Series
1.3 ½ 15 G213(S)
2.2 ½ 15 G214(S)
4.4 ½ 15 G215(S)
5.5 ¾ 20 G219(S)
7.5 ¾ 20 G220(S)
10 1 25 G224(S)
SV Series
NF
Series
SVK Series
14 1 25 G225(S)
20 1¼ 32 G232(S)
28 1½ 40 G240(S)
AF(X)
40 2 50 G250(S)
Dimensions
D
031-2
W
Valve Nominal Size Dimensions (Inches [mm])
Valve Body Inches DN [mm] A B
G212(S)-G215(S) ½” 15 3.06” [78] 1.06” [27]
G219(S)-G220(S) ¾” 20 3.62” [92] 1.06” [27]
G224(S)-G225(S) 1” 25 4.62” [117] 1.12” [29]
G232(S) 1¼ 32 4.62” [117] 1.37” [35]
G240(S) 1½ 40 5.37” [137] 1.50” [38]
G250(S) 2 50 6.12” [156] 1.56” [40]
Technical Data
G2 G2...S
Service chilled or hot water, 60% glycol, steam
Flow characteristic equal percentage linear
Action stem up - open A 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
composition (EPDM) bronze
stainless steel
stainless steel
stainless steel
spring loaded TFE
Tefl on
ANSI class ANSI 250 (up to 400 psi below 150°F)
Leakage ANSI class IV
Max steam inlet 35 psi (241 kPa) 100 psi (689 kPa)
Media temperature
Water 20°F to 250°F
(-7°C to 120°C) 20°F to 300°F
(-7°C to 149°C)
Maximum
Δ
P*
Water
Steam
35 psi (241 kPa)
20 psi (138 kPa) 35 psi (241 kPa)
35 psi (241 kPa)
Rangeability G2(S) 100:1
Valve weights G212(S), G213(S), G214(S), G215(S)
G219(S), G220(S)
G224(S), G225(S), G232(S)
G240(S), G250(S) 2 lbs
3 lbs
5.5 lbs
13 lbs
*(50% or more open)
G2...(S) 2-way Flow Patterns
Flow Direction Stem Up - Open A to AB
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.