Carrier 40UV - Page 45

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Table 19 — Valve and Coil Pressure Drops vs Flow
LEGEND
Cv — Coefficient of Volume
*Hot water only.
Table20—2-WayWaterValveSpecifications
and Ratings
LEGEND
Cv — Coefficient of Volume
Table21—3-WayWaterValve
Specifications and Ratings
LEGEND
Cv — Coefficient of Volume
2-WAY STEAM VALVES — All steam valves utilize an
electrically driven hydraulic actuator which provides a full
modulating capability and a return feature. Each steam valve is
factory-equipped with a spring linkage extension to prevent
any actuator damage due to high steam temperatures. Steam
valve specifications and dimensions are found in Table 22 and
Fig. 35.
Table 22 — 2-Way Valve Specifications
NOTE: Avoid condensation which can facilitate corrosion. With 40 F (4C) water, the maxi-
mum allowable ambient dew point temperature is 68 F (20 C). Piping insulation must not
stop drainage at actuator mounting nut. Do not use hydraulic actuators with fluid tempera-
tures below 40 F (4C).
UNIT
SIZE
(NOMINAL
CFM)
COIL
ROWS
VALVE
SUPPLIED
(Cv)
TYPICAL VALVE
AND COIL
PRESSURE DROP
psi gpm
500
1* 2.5 3.1 4
2* 2.5 3.3 4
32.53.34
42.53.34
52.53.34
750
1* 2.5 3.1 4
2* 2.5 3.5 4
32.53.34
42.53.34
52.53.34
1000
1* 2.5 3.6 4
2* 2.5 3.5 4
34.046
44.046
54.046
1250
1* 2.5 3.6 4
2* 2.5 3.5 4
34.06.78
44.06.78
54.06.78
1500
1* 2.5 3.6 4
2* 2.5 3.8 4
3 4.0 10.8 10
4 4.0 10.8 10
5 4.0 10.8 10
2000
1* 2.5 3.6 4
2* 2.5 3.8 4
3 4.0 10.8 10
4 4.0 10.8 10
5 4.0 10.8 10
NOTE: Desired Pressure Drop =
(
desired gpm flow
)
2
flow from table
APPLICATION
FLOW
COEFFICIENT
VOLUME
Cv
CLOSE-OFF
PRESSURE
PSI
NORMAL
POSITION
Steam
1.3 35 OPEN
2.2 35 OPEN
4.4 35 OPEN
Hot/Chilled Water
2.5 50 OPEN
4.0 35 OPEN
Chilled Water
Only
2.5 50 CLOSED
4.0 35 CLOSED
APPPLICATION
FLOW
COEFFICIENT
VOLUME
Cv
CLOSE-OFF
PRESSURE
PSI
NORMAL
POSITION
(COIL)
Hot/Chilled
Water
2.5 50 OPEN
4.0 35 OPEN
Chilled Water
Only
2.5 50 CLOSED
4.0 35 CLOSED
Application Steam
Fluid Temperature Maximum 281 F (138 C)
Steam Pressure Limits
Maximum Inlet 35 psi (241 kPa)
Differential 20 psi (138 kPa)
Flow Type Equal%
Material
Body Bronze
Stem Stainless Steel
Seat Bronze
Plug Brass
Packing Spring Loaded Teflon
Disc Composition
Valve Connections
Female, Union Sweat
5
/
8
in. ID (
1
/
2
in. Nominal Copper) Tube
Maximum Ambient Temperature 140 F (60 C)
Actuator
Voltage 24 Vac -15%, +10% 50/60 Hz
Power 22 VA at 24 vac
Connections Wire Leads
Weight 6.0 lb (3057 g)