Data sheet
Manual Presetting Valves LENO™ MSV-B
Description
LENO™ MSV-B is a new generation of manual valves for balancing flow in heating, cooling and domestic hot water systems.
LENO™ MSV-B is a combined presetting and shut off valve with a range of unique features:
•Removable hand wheel for easy mounting.
•Numeric presetting scale, visible from more angles.
•Easy locking of presetting.
•Built-in measuring nipples for 3mm needles.
•Open-close with Allen key in emergency.
•Open-closed colour indicator.
It is recommended to use LENO™ MSV-B in constant flow systems in front of boilers, flat stations or heat pumps in one-family houses for balancing, shut off function for service and repair, flow verification, one-pipe systems. The valve may be mounted in flow or return.
DN 15 valves are available with internal or external thread. Other dimensions with internal thread.
Danfoss PFM 1000 measuring instruments contain valve data for LENO™ MSV-B in memory.
Application
Boiler, flat station or heat pump in 1-family houses.
•For balancing.
•Shut-off function for service/repair.
© Danfoss | 2020.03 |
AI100486471298en-000401 | 1 |
Data sheet |
Manual Presetting Valves LENO™ MSV-B |
Application (continuous)
Air handling unit
•For constant flow.
•For balancing.
•Shut-off function for service/ repair.
1-pipe system
•For balancing.
•Shut-off function for service/repair.
Fan coils
•For flow verification.
•Shut-off function for service/ repair.
2 | AI100486471298en-000401 |
© Danfoss | 2020.03 |
Data sheet |
Manual Presetting Valves LENO™ MSV-B |
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Ordering |
LENO™ MSV-B valve with internal thread |
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Type |
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Material |
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Size |
kvs (m³/h) |
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Connection |
Code no. |
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DN 15 LF |
2.5 |
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Rp ½” |
003Z4030 |
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DN 15 |
3.0 |
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Rp ½” |
003Z4031 |
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DN 20 |
6.0 |
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Rp ¾” |
003Z4032 |
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DZR* Brass |
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DN 25 |
9.5 |
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Rp 1” |
003Z4033 |
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DN 32 |
18 |
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Rp 1¼” |
003Z4034 |
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DN 40 |
26 |
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Rp 1½” |
003Z4035 |
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DN 50 |
40 |
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Rp 2” |
003Z4036 |
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*Corrosion resistant brass |
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LENO™ MSV-B valve with external thread |
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Type |
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Material |
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Size |
kvs (m³/h) |
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Connection |
Code no. |
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DZR* Brass |
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DN 15 LF |
2.5 |
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G ¾ A** |
003Z4131 |
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DN 15 |
3.0 |
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G ¾ A** |
003Z4130 |
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**Eurocone DIN V 3838 |
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Accessories |
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Type |
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Code no. |
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Standard measuring nipples, 2 pcs. |
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003Z4662 |
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Extended measuring nipples, 60 mm, 2 pcs. |
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003Z4657 |
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Operating handle |
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003Z4652 |
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Flow measuring instrument PFM 100 |
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003L8260 |
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Flow measuring instrument PFM 1000 (10 bar) |
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003Z8260 |
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Flow measuring instrument PFM 1000 (20 bar) |
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003Z8261 |
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Identification tag & strips, 10 pcs. |
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003Z4660 |
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Compression fittings for valves with external thread |
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Pipe (mm) |
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Valve thread |
PEX fittings, code no. |
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Alupex fittings, code no. |
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12 x 1.1 |
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G ¾ |
013G4150 |
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- |
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12 x 2 |
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G ¾ |
013G4152 |
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013G4182 |
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13 x 2 |
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G ¾ |
013G4153 |
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- |
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14 x 2 |
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G ¾ |
013G4154 |
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013G4184 |
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15 x 1.7 |
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G ¾ |
013G4165 |
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- |
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15 x 2.5 |
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G ¾ |
013G4155 |
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013G4185 |
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16 x 1.5 |
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G ¾ |
013G4157 |
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- |
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16 x 2 |
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G ¾ |
013G4156 |
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013G4186 |
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16 x 2.25 |
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G ¾ |
- |
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013G4187 |
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17 x 2 |
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G ¾ |
013G4162 |
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- |
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18 x 2 |
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G ¾ |
013G4158 |
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013G4188 |
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18 x 2.5 |
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G ¾ |
013G4159 |
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- |
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20 x 2 |
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G ¾ |
013G4160 |
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013G4190 |
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20 x 2.5 |
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G ¾ |
013G4161 |
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013G4191 |
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Compression fittings for valves with external thread |
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Steel/copper pipes |
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Dimension |
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Code no. |
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G ¾ x 15 |
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013G4125 |
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G ¾ x 16 |
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013G4126 |
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G ¾ x 18 |
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013G4128 |
© Danfoss | 2020.03 |
AI100486471298en-000401 | 3 |
Data sheet |
Manual Presetting Valves LENO™ MSV-B |
Design
1.Valve house
2.Ball
3.Ball seat
4.Suppert screw
5. Throttle
6.Spindle head
7.Spindle
8. Shut off bush
9. Spring
10. Rotation lock
11. Top
12. Measuring nipple
13. Handle
14. Gasket for support screw
Technical Data |
Materials and parts in contact with water |
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Valve body |
DZR brass |
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O-rings |
EPDM |
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Ball |
Brass/chromium plated |
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Ball sealing |
Teflon |
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Max. static working pressure |
20 bar |
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Static test pressure |
30 bar |
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Max. differential pressure across valve |
2.5 bar (250 kPa) |
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Max. flow temperature |
120 °C |
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Min. temperature |
-20°C |
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Cooling liquids |
Ethylene glycol / propylene glycol and HYCOOL (max. 30 %) |
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Fitting |
Before fitting the valve the installer must ensure |
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that the pipe system is clean and: |
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1. |
the valve can be turned 360 degrees (if |
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threaded pipe is used). |
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2. |
the valve is fitted according to the flow |
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direction arrow. |
Removal of the handle
1.Set the handle at 0/0.
2.Release the setting lock (green).
3.Unscrew the union nut.
Calibration of the handle
Before refitting, ensure that the handle setting is 0/0.
For DN 15 valves with external thread
Danfoss offers a complete range of compression fittings for steel, cobber and PEX pipes.
DN |
R1/R2 (mm) |
15 |
96/58 |
20 |
99/60 |
25 |
101/63 |
32 |
124/87 |
40 |
127/90 |
50 |
131/94 |
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4 | AI100486471298en-000401 |
© Danfoss | 2020.03 |
Data sheet |
Manual Presetting Valves LENO™ MSV-B |
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Shut-Off |
In order to shut-off the valve the handle must be |
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pressed down. |
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The shut-off function features a ball valve, which |
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only requires a 90 degree turn to shut the valve |
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completely. |
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An indicator window shows the actual setting: |
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red = closed |
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white = open |
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Setting and Locking
The valve has a built-in presetting feature for accurate flow ratings.
Setting the required flow is made in 5 steps:
1.In open position, release the lock using the green lever or a 3 mm Allen key.
2.The handle pops up automatically.
3.The calculated value can now be set.
4.The setting is locked when the handled is pressed to click.
5.Seal - the setting can be protected by using a strip as shown.
Measuring |
The flow through the LENO™ MSV-B valve can |
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be measured using Danfoss PFM 1000 or other |
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brands of measuring instruments. The LENO™ |
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MSV-B valve is supplied with two measuring |
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nipples for 3 mm needles. A twin bracket enables |
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the user to connect both needles simultanously. |
Procedure for flow measuring:
1.Select flow measuring
2.Select valve brand
3.Select valve type and dimension
4.Enter presetting
5.Connect valve and instrument
6.Calibrate static pressure
7.Measure the flow
© Danfoss | 2020.03 |
AI100486471298en-000401 | 5 |
Data sheet |
Manual Presetting Valves LENO™ MSV-B |
Measuring Accuracy
Maximum error in measured flow [%]
16 |
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14 |
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12 |
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10 |
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8 |
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6 |
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4 |
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2 |
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0 |
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0% |
10% |
20% |
30% |
40% |
50% |
60% |
70% |
80% |
90% |
100% |
Flow % of Kvs
The red line indicates 25% of max. flow.
According to BS7350:1990 flow rates must be within following values:
±18 % at 25 % open position
±10 % at fully open position
LENO™ MSV-B is very accurate, due to the separate functions for presetting and shut-off.
Kv-Signal |
Kv-signal values are used for non-Danfoss |
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measuring instruments. Danfoss PFM1000 have |
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all data in memory, and the instruments are |
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using this formula: |
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Δp across the measuring nipples (kv-sig) and Δp |
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across the valve (kv-val) is not the same due to |
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turbulence influence for pressure measuring. |
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kv–sig |
2 |
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∆Pval= ∆Psig 1+4∙ |
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kv–val |
* with software 9.4 or higher
6 | AI100486471298en-000401 |
© Danfoss | 2020.03 |
Data sheet |
Manual Presetting Valves LENO™ MSV-B |
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Kv-Signal Values |
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Setting |
DN 15LF |
DN 15 |
DN20 |
DN25 |
DN32 |
DN40 |
DN50 |
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0.0 |
0.07 |
0.10 |
0.12 |
0.34 |
0.51 |
1.05 |
1.75 |
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0.1 |
0.08 |
0.11 |
0.16 |
0.44 |
0.73 |
1.20 |
2.01 |
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0.2 |
0.09 |
0.12 |
0.20 |
0.53 |
0.92 |
1.36 |
2.25 |
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0.3 |
0.11 |
0.13 |
0.26 |
0.61 |
1.10 |
1.55 |
2.47 |
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0.4 |
0.12 |
0.14 |
0.32 |
0.67 |
1.26 |
1.74 |
2.69 |
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0.5 |
0.13 |
0.16 |
0.38 |
0.73 |
1.43 |
1.95 |
2.91 |
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0.6 |
0.15 |
0.19 |
0.45 |
0.79 |
1.60 |
2.17 |
3.12 |
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0.7 |
0.16 |
0.21 |
0.53 |
0.84 |
1.78 |
2.40 |
3.35 |
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0.8 |
0.17 |
0.24 |
0.60 |
0.90 |
1.97 |
2.64 |
3.58 |
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0.9 |
0.19 |
0.26 |
0.67 |
0.95 |
2.18 |
2.88 |
3.82 |
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1.0 |
0.20 |
0.29 |
0.74 |
1.01 |
2.39 |
3.13 |
4.07 |
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1.1 |
0.21 |
0.32 |
0.82 |
1.08 |
2.62 |
3.39 |
4.33 |
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1.2 |
0.23 |
0.34 |
0.89 |
1.14 |
2.87 |
3.64 |
4.60 |
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1.3 |
0.25 |
0.37 |
0.96 |
1.22 |
3.12 |
3.90 |
4.89 |
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1.4 |
0.27 |
0.40 |
1.03 |
1.29 |
3.38 |
4.16 |
5.18 |
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1.5 |
0.30 |
0.44 |
1.09 |
1.37 |
3.64 |
4.43 |
5.49 |
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1.6 |
0.32 |
0.47 |
1.16 |
1.46 |
3.92 |
4.69 |
5.80 |
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1.7 |
0.35 |
0.51 |
1.23 |
1.55 |
4.18 |
4.96 |
6.13 |
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1.8 |
0.37 |
0.54 |
1.30 |
1.65 |
4.48 |
5.24 |
6.46 |
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1.9 |
0.40 |
0.58 |
1.38 |
1.75 |
4.76 |
5.51 |
6.80 |
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2.0 |
0.43 |
0.61 |
1.45 |
1.85 |
5.05 |
5.80 |
7.14 |
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2.1 |
0.46 |
0.65 |
1.53 |
1.96 |
5.35 |
6.08 |
7.49 |
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2.2 |
0.49 |
0.69 |
1.61 |
2.07 |
5.65 |
6.38 |
7.84 |
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2.3 |
0.52 |
0.73 |
1.69 |
2.18 |
5.96 |
6.68 |
8.19 |
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2.4 |
0.56 |
0.77 |
1.78 |
2.29 |
6.27 |
6.99 |
8.55 |
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2.5 |
0.59 |
0.80 |
1.87 |
2.41 |
6.60 |
7.30 |
8.91 |
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2.6 |
0.62 |
0.85 |
1.97 |
2.53 |
6.94 |
7.63 |
9.27 |
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2.7 |
0.66 |
0.89 |
2.07 |
2.65 |
7.29 |
7.98 |
9.64 |
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2.8 |
0.69 |
0.93 |
2.17 |
2.77 |
7.67 |
8.33 |
10.00 |
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2.9 |
0.73 |
0.97 |
2.29 |
2.89 |
8.06 |
8.70 |
10.37 |
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3.0 |
0.76 |
1.01 |
2.40 |
3.01 |
8.48 |
9.08 |
10.74 |
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3.1 |
0.80 |
1.04 |
2.52 |
3.13 |
8.92 |
9.48 |
11.11 |
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3.2 |
0.83 |
1.08 |
2.65 |
3.25 |
9.38 |
9.90 |
11.49 |
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3.3 |
0.87 |
1.12 |
2.78 |
3.37 |
9.87 |
10.33 |
11.88 |
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3.4 |
0.90 |
1.16 |
2.91 |
3.49 |
10.38 |
10.79 |
12.27 |
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3.5 |
0.94 |
1.20 |
3.05 |
3.62 |
10.91 |
11.26 |
12.67 |
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3.6 |
0.97 |
1.25 |
3.19 |
3.74 |
11.46 |
11.74 |
13.09 |
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3.7 |
1.01 |
1.30 |
3.33 |
3.87 |
12.02 |
12.25 |
13.51 |
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3.8 |
1.06 |
1.35 |
3.47 |
4.00 |
12.58 |
12.77 |
13.95 |
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3.9 |
1.10 |
1.41 |
3.61 |
4.13 |
13.12 |
13.30 |
14.41 |
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4.0 |
1.14 |
1.47 |
3.75 |
4.26 |
13.64 |
13.85 |
14.88 |
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4.1 |
1.18 |
1.53 |
3.89 |
4.39 |
14.12 |
14.41 |
15.38 |
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4.2 |
1.23 |
1.59 |
4.02 |
4.53 |
14.52 |
14.98 |
15.89 |
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4.3 |
1.27 |
1.66 |
4.15 |
4.68 |
14.84 |
15.55 |
16.44 |
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4.4 |
1.31 |
1.73 |
4.28 |
4.82 |
- |
16.13 |
17.00 |
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4.5 |
1.35 |
1.81 |
4.40 |
4.98 |
- |
16.69 |
17.59 |
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4.6 |
1.39 |
1.91 |
4.52 |
5.13 |
- |
17.25 |
18.21 |
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4.7 |
1.43 |
2.00 |
4.62 |
5.29 |
- |
17.80 |
18.86 |
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4.8 |
1.47 |
2.08 |
4.72 |
5.46 |
- |
18.32 |
19.54 |
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4.9 |
1.51 |
2.16 |
4.82 |
5.64 |
- |
18.80 |
20.24 |
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5.0 |
1.54 |
2.23 |
4.90 |
5.81 |
- |
19.25 |
20.97 |
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5.1 |
1.60 |
2.30 |
4.97 |
6.00 |
- |
19.65 |
21.73 |
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5.2 |
1.66 |
2.36 |
5.04 |
6.19 |
- |
19.98 |
22.51 |
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5.3 |
1.72 |
2.41 |
5.09 |
6.38 |
- |
20.24 |
23.30 |
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5.4 |
1.79 |
2.46 |
5.14 |
6.57 |
- |
20.41 |
24.12 |
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5.5 |
1.87 |
2.50 |
5.18 |
6.77 |
- |
20.48 |
24.94 |
|
5.6 |
1.93 |
2.54 |
5.21 |
6.96 |
- |
- |
25.76 |
|
|
|
|
|
|
|
|
|
|
5.7 |
1.99 |
2.57 |
5.24 |
7.15 |
- |
- |
26.58 |
|
5.8 |
2.04 |
- |
5.27 |
7.34 |
- |
- |
27.38 |
|
5.9 |
2.09 |
- |
- |
7.52 |
- |
- |
28.16 |
|
|
|
|
|
|
|
|
|
|
6.0 |
2.14 |
- |
- |
7.69 |
- |
- |
28.90 |
|
6.1 |
2.18 |
- |
- |
7.85 |
- |
- |
29.59 |
|
|
|
|
|
|
|
|
|
|
6.2 |
2.22 |
- |
- |
7.98 |
- |
- |
30.21 |
|
6.3 |
2.26 |
- |
- |
8.09 |
- |
- |
30.74 |
|
|
|
|
|
|
|
|
|
|
6.4 |
- |
- |
- |
8.17 |
- |
- |
31.17 |
|
6.5 |
- |
- |
- |
8.22 |
- |
- |
31.47 |
|
|
|
|
|
|
|
|
|
|
6.6 |
- |
- |
- |
- |
- |
- |
31.61 |
© Danfoss | 2020.03 |
AI100486471298en-000401 | 7 |
Data sheet |
Manual Presetting Valves LENO™ MSV-B |
Kv-Signal
8 | AI100486471298en-000401 |
© Danfoss | 2020.03 |