Danfoss USV-I, USV-M Data sheet
Data sheet
Upgradable balancing valves
USV
Application / Description
USV-I
USV valves are designed for manual hydronic
balancing of heating and cooling systems.
USV-I (red knob) is used together with USV-M to
limit the flow in heating or cooling installation
or can work separately as manual balancing
valves for flow limitation. If certain pipe sectors
do not require a control of differental pressure,
USV-I and USV-M can be used as shut-off- and
measuring valve.
USV-M (blue knob) valve can be upgraded into
an automatic USV-PV balancing valve. USV-M is
designed for installation in the return pipe.
Upgrading from manual to automatic balancing
is done by mounting PV-controller to an USV-M
valve.
USV-M
System does not need to be depressurized
during the upgrade and the kV-values does not
change. USV-PV maintains constant differential
pressure across a riser.
Due to its special design USV-PV has a firm
connection between diaphragm housing and
valve cone. Diaphragm controller thus acts only
against the force of reference spring. Excelent
control of differential pressure is achieved by the
following design characteristics:
• pressure released cone.
• adapted membrane for every valve
dimension which provides constant quality of
performances for all sizes.
DEN-SMT/SI
USV-PV / I Upgrading of PV-controller from USV-M to USV-PV
USV-PV (blue knob) is designed to maintain
a constant set dierential pressure across a
riser. Eventual operating noise caused by high
dierential pressure induced by changes in the
system can be avoided by upgrading the manual
valve to the dierential pressure controller.
USV-PV can be set to control the dierential
pressure between 0,05 bar to 0,25 bar (5 kPa
to 25 kPa). The PV controller is factory pre-set
to 0,1 bar (10 kPa). PV-controller upgrading
set includes an impulse tube and a threaded
connector for the drain connection of USV-I.
VD.C 1.F3.02 © Danfoss 10/2015
USV-M (PV) and USV-I are compact valves in
which the operating elements and connections
are placed within an arc of 90o, so that in spite
of small valve dimensions, access for installation
and operation is optimal. Insulation caps for
temperature up to 80 oC or 120 oC are available as
accessory.
USV-M and USV-I are supplied in a set-pack with
internal or external thread. If an external thread
is chosen, a threaded or welded plug can be
supplied as an accessory.
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USV-PV
Data sheet Upgradable balancing valves USV
Application / Description
(continued)
Before upgrading After upgrading
Upgradable USV valves are to be used for
manual as well as automatic balancing of
heating systems. If system has to be fitted with
differential pressure controller, USV can be
upgraded with PV controller.
USV-I
USV-M
TWA
CFD
CFE
CFE
USV in oor heating systems
Upgradable control valves are to be used for
manual balancing of a floor system manifold.
USV-I
USV-M
RA5062
TP5000
RET
USV-I
USV iin cooling systems
Upgradable USV control valves are to be used
for manual or automatic hydronic balancing of
cooling devices i.e. as fan coils or chilled ceilings.
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VD.C1.F3 .02 © Danfoss 10/2015
DEN-SMT/SI
Data sheet Upgradable balancing valves USV
Ordering
USV set-pack (containing one USV-M and one USV-I)
Typ e DN
k
[m3/h]
VS
Int. thread
ISO 7/1
15 1,6 Rp ½
20 2,5 Rp ¾
25 4,0 Rp 1
32 6,3 Rp 1¼
40 10 Rp 1½
50* 16 Rp 2
* DN 50 is not upgrada ble
PV controller for upgrading USV-M valve
Typ e DN Comments Code No.
15 Include:
impulse
20 003Z2157
tube1,5 m
and threaded
25 003 Z2158
connector
32
40
003Z2156
003Z2159
USV-M valve
k
Int. thread
Typ e DN
VS
[m3/h]
ISO 7/1
15 1,6 Rp ½
20 2,5 Rp ¾
25 4,0 Rp 1
32 6,3 Rp 1¼
40 10 Rp 1½
50* 16 Rp 2
* DN 50 is not upgrada ble
Code No.
003Z 2141
003Z 2142
003Z 2143
003Z 2144
003Z 2145
003Z2155
Ext. thread
ISO 228/1
G ¾ A
G 1 A
G 1¼ A
G 1½ A
G 1¾ A
G 2¼ A
It is not neccessary to depressurize
the system in order to upgrade into
dierential pressure controller.
Kv value does not change.
Code No.
003Z2121
003Z 2122
003Z 2123
003Z 2124
003Z 2125
003Z2153
Ext. thread
ISO 228/1
G ¾ A
G 1 A
G 1¼ A
G 1½ A
G 1 ¾ A
G 2¼ A
Code No.
003Z 2146
003Z 2147
003Z 2148
003Z 2149
003Z2150
003Z2160
Code No.
003Z 2126
003Z 2127
003Z 2128
003Z 2129
003Z 2130
003Z2154
Technical data
USV-I valve
k
Int. thread
Typ e DN
VS
[m3/h]
15 1,6 Rp ½
20 2,5 Rp ¾
25 4 Rp 1
32 6,3 Rp 1¼
40 10 Rp 1½
50 16 Rp 2
Max. working pressure ........................................ 16 bar
Test pressure ...........................................................25 bar
Max. dierential pressure across
the valve (USV-M/PV) ....................... 0,8 bar (80 kPa)
Max. dierential pressure across
the valve (USV-I) ............................... 1,5 bar (150 kPa)
Flow temperature ...................... -20 to 120 °C
Ext. thread
ISO 228/1
G ¾ A
G 1 A
G 1¼ A
G 1½ A
G 1 ¾ A
G 2¼ A
ISO 7/1
Code No.
003Z 2131
003Z 2132
003Z 2133
003Z 2134
003Z 2135
003Z2151
Material of parts in contact with water:
Valve body, spindle, etc. ....................................... Brass
Cone (USV-M/PV) ..........................................DZR Brass
Diaphragm and O-rings ...................................... EPDM
Spring ...................................................................Stainless
steel ........................................................................................
Code No.
003Z 2136
003Z 2137
003Z 2138
003Z2139
003Z 2140
003Z2152
DEN-SMT/SI
VD.C1.F3 .02 © Danfoss 10/2015
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Data sheet Upgradable balancing valves USV
Accessories and spare
parts
Typ e Comments/connection Code No.
Tailpiece threaded
(for external thread only)
Tailpiece welding
(for external thread only)
Shut-o knob for USV-I
(black)
Shut-o knob for USV-M
(black)
DN 15, G ¾ A
DN 20, G 1 A
DN 25, G 1¼ A
DN 32, G 1½ A
DN 40, G 1¾ A 065F6060
DN 50, G 2¼ A 003L8162
DN 15, G ¾ A
DN 20, G 1 A
DN 25, G 1¼ A
DN 32, G 1½ A
DN 40, G 1 ¾ A 065F6080
DN 50, G 2¼ A 003L8163
DN 15 003L 8155
DN 20 003L 8156
DN 25 003L 8157
DN 32 0 03L8158
DN 40 003L8158
DN 50 003L8158
DN 15 003L 8146
DN 20 00 3L8147
DN 25 003L 8148
DN 32 0 03L8149
DN 40 003L 8149
DN 50 003L 8149
003N5070
003N5071
003N5072
003N5073
003N5090
003N5091
003N5092
003N5093
Drain connection 003L 8141
Masuring connector For drain connection 003L8143
Connection plug for impulse tube
(spare part)
Impulse tube 1,5 m 003L8152
Impulse tube 5 m 003L 8153
Insulation cap
up to 80 °C DN 15 003L8165
up to 120 ° C DN 15 00 3L8170
For drain connection 003Z0109
DN 20 003L8166
DN 25 003 L8167
DN 32 003L816 8
DN 40 003L8169
DN 50 003L8164
DN 20 003L8171
DN 25 00 3L817 2
DN 32 0 03L 8173
DN 40 003L 8139
DN 50 003L 8138
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VD.C1.F3 .02 © Danfoss 10/2015
DEN-SMT/SI
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