Danfoss Electronics WVO Data Sheet
Data sheet
Pressure operated water valve
Type WVO
Pressure operated water valve type WVO is used
for regulating the flow of water in refrigeration
plant with water-cooled condensers.
The pressure operated water valve gives
modulating regulation of the condensing
pressure and so keeps it constant during
operation. When the refrigeration plant is
stopped, the cooling water flow is shut off
automatically.
Pressure operated water valve can be used with
flammable refrigerants. Double sealing between
the refrigerant and the water line ensures that
in case the bellows damage and the refrigerant
leak, it cannot enter into the water. This severely
limits the safety implications.
It means that the valve can be used together with
a double walled heat exchanger and water circuit
in such a system does not need to be considered
as a part of the installation for flammable
refrigerants (EN378-1:2008, clause 4.4.2.2).
Features
y Compact valve
y Setting pressure done by factory (optional)
y HCFC, HFC and HC
y NPT threads on request
y Capillary tube available as option
y Stainless steel version available for request
y Suitable for flammable refrigerants
y May be used in the following EX range:
Category 3 (Zone 2)
© Danfoss | DCS (az) | 2018.03
DKRCC.PD.DA0.B8.02 | 1
Data sheet | Pressure operated water valve, type WVO
Technical data
Water side Refrigerant side
Max. working pressure PS / MWP 16 bar / 232 psig 26.4 bar / 383 psig
Max. test pressure PT 24 bar / 350 psig 38 bar / 551 psig
R22, R1270, R134a, R290, R404A,
Media Fresh water and neutral brine
R407A, R407C, R407F, R448A, R449A,
R450A, R452A, R507A, R513A, R600,
R600a
Max. differential pressure 10 bar / 145 psi –
Temperature range -25 – 130 °C / -13 – 266 °F -25 – 130 °C / -13 – 266 °F
1
Typ e
[mm] [in] [m³ / h] [gal / min]
WVO 10 LF 10
WVO 10 10
WVO 15 15
WVO 20 20
Orifice size kv value
2
5
/
2
5
/
3
5
/
4
5
/
)
Cv value
0.63 0.7
1.4 1.6
1.9 2.2
3.4 3.9
WVO 25 25 1 5.5 6.4
1
The kv value is the flow of water in [m3 / h] at a pressure drop across valve of 1 bar, ρ = 1000 kg / m
2
The Cv value is the flow of water in [gal / min] at a pressure drop across valve of 1 psi, ρ = 10 lbs / gal
3
2
)
Capacity The capacity curves show the capacities of
the individual valves (water quantity in [m3 / h])
depending on the water pressure drop across the
valve.
SI unit US unit
[bar]
The capacity given apply at 85% valve opening
and are obtained with the offset shown on
page 4.
[bar]
© Danfoss | DCS (az) | 2018.03
[m3 / h]
[gal / min]
DKRCC.PD.DA0.B8.02 | 2
Data sheet | Pressure operated water valve, type WVO
Ordering
Typ e
Connection
type
WVO 10 LF G 3/
WVO 10 LF G 3/
WVO 10 G 3/
WVO 10 G 3/
WVO 10 G 3/
WVO 10 G 3/
WVO 15 G 1/
WVO 20 G 3/
Connection
standard
8
8
8
8
8
8
2
4
ISO 228–1 8 – 12 115 – 175 003N8053
ISO 228–1 14 – 18 200 – 260 003N8054
ISO 228–1 8 – 12 115 – 175 003N5203
ISO 228–1 14 – 18 200 – 260 003N5206
ISO 228–1 16 – 20 232 – 290 003N5207
ISO 228–1 16 – 22 232 – 320 003N6220
ISO 228–1 Available on request
ISO 228–1 Available on request
Pressure range
[bar] [psig]
Code no.
WVO 25 G 1 ISO 228–1 Available on request
WVO 10 NPT 3/
WVO 10 NPT 3/
WVO 15 NPT 1/
WVO 15 NPT 1/
WVO 20 NPT 3/
8
ANSI/ASME B1.20.1 6 – 10 85 – 145 003N8052
8
ANSI/ASME B1.20.1 14 – 18 200 – 260 003N8056
2
ANSI/ASME B1.20.1 6 – 10 85 – 145 003N8062
2
ANSI/ASME B1.20.1 14 – 18 200 – 260 003N8066
4
ANSI/ASME B1.20.1 14 – 18 200 – 260 003N8076
WVO 25 NPT 1 ANSI/ASME B1.20.1 Available on request
) with 0.8 m capillary tube and valve opener
) WVO 10 low flow version with kv value: 0,63 m³⁄h
Codes for valve with prefabricated factory setting, other sizes and pressure ranges are available on
request.
2
)
2
)
1
)
Accessories
Description Code no.
1 m (39 in) capillary tube ¼ in. (6 mm) flare coupling nuts at each end 060- 007166
Bracket 003N0388
© Danfoss | DCS (az) | 2018.03
DKRCC.PD.DA0.B8.02 | 3
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