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 dierential pressure across a riser. Eventual operating noise caused by high dierential pressure induced by changes in the system can be avoided by upgrading the manual valve to the dierential pressure controller.
USV-PV can be set to control the dierential 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.
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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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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 dierential 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. dierential pressure across
the valve (USV-M/PV) ....................... 0,8 bar (80 kPa)
Max. dierential 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
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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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Data sheet Upgradable balancing valves USV
S
E
B
C
P
.A
L
L
E
N
K
E
Y
.
00
1
.0
1
Design
1. Shut-off knob
2. Shut-off spindle
3. Setting spindle
4. Scale disc
5. O-rings
6. Valve cone
7. Valve body
DN
S S
O
F
N A D
15 2,5
20 3
25 4
32 5
40 5
Fig. 8 USV-I
USV-I incorporates a double cone (3,6) able to give maximum stroke limitation, thus achieving ow limitation. It also incorporates shut o function. ASV-I is equipped with the plugs for the ow measurement and a connection for the USV-P/PV impulse tube.
Use the following procedure to limit the ow: turn the valve knob (1) fully counter clockwise to open the valve. The mark on the knob will now be opposite »0« on the scale (4). Turn the valve knob (1) clockwise to the required setting (e.g. for setting 2,2 the knob must be rotated two full turns and then forward to »2« on the scale. Hold
USV-M
Port A Port B
the knob (1) to keep the setting (e.g. 2,2) and using a hexagon socket key turn the spindle (3) fully counter clockwise (until a stop can be felt). Turn the valve knob (1) fully counter clockwise so that the mark on the knob is opposite »0« on the scale (4). The valve is now open as many turns from the closed position (2,2) as indicated by the convertion from required ow. To annul the setting, turn the hexagon socket key fully clockwise (until a stop can be felt).
Remember, at the same time the knob must be held on its »0« setting.
DEN-SMT/SI
DN 15 - 40 DN 50
USV-M can be upgraded to USV-PV automatic
USV-M dimension DN 50 is not upgradable. balancing valve. The system does not need to be depressurized during the upgrade.
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Data sheet Upgradable balancing valves USV
S
E
B
C
P
.A
L
L
E
N
K
E
Y
.
00
1
.0
1
Design (continued)
1. Shut-off knob
2. Differential pressure setting
spindle
3. O-ring
4. Reference spring
5. Impulse tube connection
6. Diaphragm element
7. Control diaphragm
8. Pressure-relieved valve cone
9. Valve body
USV-PV valve
DN
15
20
25
32
40
2,5
Tur ns
(n)
S
S
O
F
N A D
0 0,25
bar
1 0,24
3
4
5
5
2 0,23
3 0,22
4 0, 21
5 0,2
6 0,19
7 0 ,18
8 0,17
9 0 ,16
10 0,15
11 0 ,14
12 0,13
13 0,12
14 0 ,11
15 * 0,1
16 0,09
17 0,08
18 0,07
19 0,06
20 0,05
* Factory se tting
USV-PV is designed to maintain a constant set dierential pressure. Via an internal connection
- trough the cone (8) and together with the reference spring (4), pressure in the return pipe acts on the underside of the control diaphragm (7) while via an impulse tube (5), pressure in the ow pipe acts on the top of the diaphragm. In this way the balancing valve maintains adjusted dierential pressure in the riser.
USV-PV is factory-set on 0,1 bar (10 kPa). The dierential pressure can be varied between 0,05bar and 0,25 bar (5 kPa and 25 kPa).
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Data sheet Upgradable balancing valves USV
Sizing Required:
A. Correct valve size USV-M / I B. Correct USV-I presetting
Given:
1. Required max. flow in the riser Q = 0,80 [m3/h]
2. Pressure drop across riser Δps = 15 [kPa]
3. Available pump pressure Δpo = 45 [kPa]
Solution: A) Correct valve size :
Pipe size and low pressure drop (fully opened valve) can be criterions for valve selection.
The example selects USV-M 20 valve. Pressure
drop is read from sizing diagram (page 8) by taking a horizontal line from DN 20 valve with presetting 3,2 (fully opened valve) to intersect kV-axis at 2,5 [m3/h].
Δpo = Δpv(USV-I) + Δps + Δpv (USV-M)
B) Correct valve size and presetting of USV-I:
The differential pressure across USV-I can be calculated as follows: Δpv (USV-I) = Δpo – Δps – Δpv(USV-M)
Δpv = 45 [kPa] – 15 [kPa] – 10 [kPa] = 20 [kPa]
The example selects USV-I 20. Presetting is read from the sizing diagram (page 7) by taking a straight line from from max. flow Q = 0,80 [m3/h] to the differential pressure Δpv (USV-I)= 20 [kPa] and to the intersection with kV-axis at kV = 1,8 [m3/h].
A straight line conecting this point and Q = 0,80 [m3/h] intersects the differential pressure bar at Dpv (USV-M) = 10 [kPa].
Draw a horizontal line from this point to the adjustment curve of the chosen valve (DN 20). Starting from closed valve, the presetting of 1,6 turns is required.
USV-PV
Required: Diff. pressure setting of USV-PV
Given:
1. Required max. flow in the riser Q = 0,80 [m3/h]
2. Pressure drop across riser
3. Δps = 15 [kPa]
4. Available pump pressure Δpo = 45 [kPa]
Solution:
Δpa = Δpv (USV-I) - Δpo - Δpv (USV-PV)
USV-M is upgraded to USV-PV by mounting the PV controler to the USV-M valve and connecting it to the USV-I by the means of impulse tube. USV-PV maintains constant differential pressure Δpa (pressure drop across riser - see fig.). USV-PV is to be set at Δpa = 15 [kPa].
kV-values [m3/h] for various presettings:
Size
0,20 0,60 1,00 1,40 1,80 2,20 2,70 3,20
Number of turns
DN 15 0,2 0,5 0,8 1,1 1,2 1,4 1,6 1,6 DN 20 0,3 0,8 1,3 1,6 1,9 2,1 2,4 2,5 DN 25 0,4 1,3 1,9 2,6 3 ,1 3,4 3,7 4,0 DN 32 0,7 2,0 3,1 4,1 4,9 5,4 5,9 6,3 DN 40 1,1 3,1 4,9 6,4 7,6 8,5 9,1 10,0 DN 50 1,7 4,9 7,6 10,0 11,9 13, 3 14,4 16,0
DEN-SMT/SI
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Data sheet Upgradable balancing valves USV
Q x1 0
Sizing (continued)
A straight line connecting the bars of flow, differential pressure and kV value shows the relationship between these three variables.
k
=
v
p
Δ
A horizontal line from the intersection with the kV bar shows the presetting value for each valve size.
Q [m3/h] Δp [kPa]
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Data sheet Upgradable balancing valves USV
Measurement of flow and differential pressure
Installation
Pressure testing
USV-I is tted with a test plug and a drain connection and the pressure drop across valve can be measured with Danfoss measuring device PFM 3000 or other standard devices. Using the pressure drop characteristics of USV-I and dierential pressure of the fully opened valve, actual ow can be obtained.
USV-I must be instaled in the ow pipe. USV-M must be installed in the returned pipe.The direction of the ow must follow the direction of the arrow on the valve body. USV-M and USV-I can be installed in any positions if installation instructions are being observed. t is recommended that a lter i.e. Danfoss Typ FV is installed in the supply pipe. After upgrading USV-M to USV-PV the impulse tube between USV-I and USV-PV must be ushed through before installation.
Max. test pressure ............................................... 25 bar
When pressure testing the system you must secure that both sides of the membrane have the same static pressure to prevent damage of the pressure controller. That means the impulse tube must be connected and any needle valves must be open.
Note: When measuring the pre-set ow all radiator valves must be set for the nominal ow.
Dierential pressure [Δpr ] measuring in the riserdes. Drain connection of the USV-I and USV-M is to be tted wit a measuring connector (Danfoss Code No. 003L8143) .
A 90° angle between service features (shut-o on the one side, measuring and draining on the other), allow upside down installation and easy measuring, shut-o and draining of the system.
If USV-PV is installed in combination with USV-I, both valves can be open or closed (both valves must be in the same position!).
DEN-SMT/SI
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Data sheet Upgradable balancing valves USV
Dimensions
Ext. thread Int. thread With tailpiece welding With tailpiece threaded
L
L
L
1
Typ e
[mm]
[mm]
2
[mm]
US V-I 15 65 131 139 48 15 28 27 Rp ½ G ¾ A 0, 31
USV-I 20 75 147 159 60 18 35 32 Rp ¾ G 1 A 0,4
USV-I 25 85 169 169 75 23 45 41 Rp 1 G 1¼ A 0,67
USV-I 32 95 191 179 95 29 55 50 Rp 1¼ G 1½ A 1,1
USV-I 40 10 0 202 18 4 100 31 55 55 Rp 1½ G 1¾ A 1,22
USV-I 50 130 246 214 106 38 55 67 Rp 2 G 2¼ A 2
H
3
[mm]
H
1
[mm]
D
2
1
[mm]S[mm]aIS O 7/1bISO 228/1
Weight
[kg]
Ext. thread Int. thread With tailpiece welding With tailpiece threaded
L
L
L
H
H
Typ e
[mm]
1
2
3
[mm]
[mm]
[mm]
1
D
2
[mm]
1
[mm]S[mm]aIS O 7/1bISO 228/1
US V-M 15 65 131 139 61 15 28 27 Rp ½ G ¾ A 0,28
USV-M 20 75 147 159 76 18 35 32 Rp ¾ G 1 A 0,4
USV-M 25 85 169 169 96 23 45 41 Rp 1 G 1¼ A 0,73
USV-M 32 95 191 179 121 29 55 50 Rp 1¼ G 1½ A 1,28
USV-M 40 100 202 184 126 31 55 55 Rp 1½ G 1¾ A 1,35
USV-M 50 130 246 214 106 38 55 67 Rp 2 G 2¼ A 2
Weight
[kg]
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DEN-SMT/SI
Data sheet Upgradable balancing valves USV
Dimensions (continued)
L
L
L
1
Typ e
[mm]
[mm]
2
US V-PV 15 65 131 139 115 15 28 61 27 Rp ½ G ¾ A 0,55
USV-PV 20 75 147 159 14 4 18 35 76 32 Rp ¾ G 1 A 0,9
USV-PV 25 85 169 169 184 23 45 98 41 Rp 1 G 1¼ A 1,8
USV-PV 32 95 191 179 230 29 55 122 50 R p 1¼ G 1½ A 3,35
USV-PV 40 100 202 184 235 31 55 122 55 Rp 1½ G 1¾ A 3,45
3
[mm]
H
[mm]
1
H
[mm]
D
2
D
1
[mm]
2
mmS[mm]aIS O 7/1bISO 228/1
Weight
[kg]
DEN-SMT/SI
VD.C1.F3 .02 © Danfoss 10/2015
h
[mm]
DN 15 150
DN 20 200
DN 25 250
DN 32/4 0 320
min
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Data sheet Upgradable balancing valves USV
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VD.C1.F3 .02
Produce d by Danfoss A/S © 10/2015
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