Danfoss LENO MSV-B Data sheet

Data sheet

Manual Presetting Valves LENO™ MSV-B

Description

Application

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.

Boiler, flat station or heat pump in 1-family houses.

• For balancing.

• Shut-off function for service/repair.

Data sheet Manual Presetting Valves LENO™ MSV-B

Application (continuous)

Air handling unit

• For constant flow.

• For balancing.

• Shut-off function for service/ repair.

Fan coils

• For flow verification.

• Shut-off function for service/ repair.

1-pipe system

• For balancing.

• Shut-off function for service/repair.

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Data sheet Manual Presetting Valves LENO™ MSV-B

Ordering

LENO™ MSV-B valve with internal thread

Typ e Material Size kv s (m³/h) Connection Code no.

DN 15 LF 2.5 Rp ½” 003Z4030

DN 15 3.0 Rp ½” 003Z4031 DN 20 6.0 Rp ¾” 003Z4032

DZR* Brass

*Corrosion resistant brass

DN 25 9.5 Rp 1” 003Z4033 DN 32 18 Rp 1¼” 003Z4034 DN 40 26 Rp 1½” 003Z4035 DN 50 40 Rp 2” 003Z4036

LENO™ MSV-B valve with external thread

Typ e Material Size kv s (m³/h) Connection Code no.

DZR* Brass

**Eurocone DI N V 3838

DN 15 LF 2.5 G ¾ A** 00 3Z4131

DN 15 3.0 G ¾ A** 003Z 4130

Accessories

Typ e Code no.

Standard measuring nipples, 2 pcs. 003Z4662 Extended measuring nipples, 60 mm, 2 pcs. 003Z4657 Operating handle 003Z4652 Flow measuring instrument PFM 100 003L8260 Flow measuring instrument PFM 1000 (10 bar) 003Z8260 Flow measuring instrument PFM 1000 (20 bar) 00 3Z8261 Identification tag & strips, 10 pcs. 003Z4660

Compression fittings for valves with external thread

Pipe (mm) Valve thread PEX fittings, code no. Alupex fittings, code no.

12 x 1.1 G ¾ 013G 4150 -

12 x 2 G ¾ 013G 4152 013G 4182 13 x 2 G ¾ 013G 4153 -

14 x 2 G ¾ 013G 4154 013G 4184 15 x 1.7 G ¾ 013G4165 15 x 2.5 G ¾ 013G4155 013 G4185 16 x 1.5 G ¾ 013G415 7 -

16 x 2 G ¾ 013G 4156 013G 4186

16 x 2.25 G ¾ - 013G418 7

17 x 2 G ¾ 013G 4162 -

18 x 2 G ¾ 013G 4158 013G 4188 18 x 2.5 G ¾ 013G4159 -

20 x 2 G ¾ 013G 4160 013G 4190 20 x 2.5 G ¾ 013G 4161 013G 4191

Compression fittings for valves with external thread

Steel/copper pipes Dimension Code no.

G ¾ x 15 013G 4125 G ¾ x 16 013G 4126 G ¾ x 18 013G 4128

AI100486471298en-000401 | 3© Danfoss | 2020.03

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

Fitting

Materials and parts in contact with water

Valve body DZR brass O-rings EPDM Ball Brass/chromium plated Ball sealing Teflon

Max. static working pressure 20 bar Static test pressure 30 bar Max. differential pressure across valve 2.5 bar (250 kPa) Max. flow temperature 120 °C Min. temperature -20° C Cooling liquids Ethylene glycol / propylene glycol and HYCOOL (max. 30 %)

Before fitting the valve the installer must ensure that the pipe system is clean and:

1. the valve can be turned 360 degrees (if threaded pipe is used).

2. the valve is fitted according to the flow direction arrow.

Removal of the handle

1. Set the handle at 0/0.

DN R1/R 2 (mm)

15 96/58 20 99/60 25 101/63 32 124/ 87 40 127/90 50 131/94

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.

4 | AI100486471298en-000401 © Danfoss | 2020.03

Data sheet Manual Presetting Valves LENO™ MSV-B

Shut-Off

Setting and Locking

In order to shut-off the valve the handle must be pressed down.

The shut-off function features a ball valve, which only requires a 90 degree turn to shut the valve completely.

An indicator window shows the actual setting:

• red = closed

• white = open

Measuring

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.

The flow through the LENO™ MSV-B valve can be measured using Danfoss PFM 1000 or other brands of measuring instruments. The LENO™ MSV-B valve is supplied with two measuring nipples for 3 mm needles. A twin bracket enables 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

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.

AI100486471298en-000401 | 5© Danfoss | 2020.03

Data sheet Manual Presetting Valves LENO™ MSV-B

Maximum error in measured ﬂow [%]

%100%

󰇧

󰇨

Measuring Accuracy

0% 10% 20% 30%40% 50%60% 70%80% 90

Flow % of K

Kv-Signal

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

Kv-signal values are used for non-Danfoss measuring instruments. Danfoss PFM1000 have all data in memory, and the instruments are using this formula:

Δp across the measuring nipples (k across the valve (k

) is not the same due to

v-val

) and Δp

v-sig

turbulence influence for pressure measuring.

LENO™ MSV-B is very accurate, due to the separate functions for presetting and shut-off.

∆P

= ∆P

val

sig

* with software 9.4 or higher

1 + 4 ∙

v–sig

v–val

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Data sheet Manual Presetting Valves LENO™ MSV-B

Kv-Signal Values

Setting DN 15 LF DN 15 DN20 DN25 DN32 DN40 D N50

0.0 0.07 0.10 0.12 0.34 0. 51 1.0 5 1.75

0.1 0. 08 0. 11 0.16 0.44 0.73 1.2 0 2.01

0.2 0.09 0 .12 0. 20 0.53 0.92 1.3 6 2.25

0.3 0 .11 0 .13 0. 26 0.61 1 .10 1. 55 2. 47

0.4 0. 12 0 .14 0 .32 0.67 1.26 1. 74 2.69

0.5 0. 13 0 .16 0.38 0.73 1. 43 1.95 2 .91

0.6 0.15 0.19 0.45 0.79 1. 60 2 .17 3. 12

0.7 0.16 0 .21 0. 53 0.84 1.78 2.40 3. 35

0.8 0 .17 0. 24 0.60 0.90 1.97 2.64 3.58

0.9 0 .19 0.26 0.67 0.95 2 .18 2.88 3. 82

1.0 0.20 0.29 0 .74 1.01 2.39 3.13 4. 07

1.1 0 .21 0. 32 0.82 1.0 8 2.62 3.39 4.33

1.2 0.23 0. 34 0.89 1.14 2. 87 3.64 4.60

1.3 0.25 0.37 0.96 1. 22 3 .12 3 .90 4.89

1.4 0. 27 0.40 1.0 3 1.29 3.38 4.16 5 .18

1.5 0.30 0.44 1.0 9 1.37 3.64 4. 43 5.49

1.6 0. 32 0.47 1.16 1.46 3.92 4 .69 5.80

1.7 0. 35 0.51 1.2 3 1.55 4 .18 4.9 6 6.13

1.8 0 .37 0.54 1. 30 1.6 5 4.48 5.24 6.46

1.9 0.40 0. 58 1.38 1.75 4. 76 5.51 6.80

2.0 0.43 0 .61 1. 45 1. 85 5.05 5. 80 7.1 4

2.1 0.46 0.65 1.53 1.9 6 5.35 6.08 7.4 9

2.2 0.49 0.69 1.61 2.07 5.65 6.38 7.8 4

2.3 0.52 0.73 1.69 2 .18 5.9 6 6.68 8.19

2.4 0.56 0.77 1. 78 2.29 6 .27 6.99 8 .55

2.5 0.59 0.8 0 1.87 2. 41 6.60 7. 30 8.91

2.6 0.62 0.85 1.97 2.53 6.94 7. 63 9. 27

2.7 0.66 0.89 2. 07 2.65 7. 29 7.9 8 9.64

2.8 0.69 0.93 2 .17 2.77 7. 67 8.33 10.0 0

2.9 0.73 0. 97 2. 29 2. 89 8.06 8 .70 10.3 7

3.0 0.76 1.01 2.40 3 .01 8.48 9.0 8 10. 74

3.1 0. 80 1. 04 2. 52 3.13 8 .92 9.48 11.11

3.2 0.83 1. 08 2.65 3.25 9. 38 9.90 11. 49

3.3 0.87 1.12 2 .78 3 .37 9.87 10. 33 11. 88

3.4 0.90 1.16 2.91 3.49 10. 38 10.79 12 .27

3.5 0.94 1. 20 3.05 3 .62 10.91 11. 26 12.67

3.6 0.97 1. 25 3.19 3 .74 11. 46 11 .74 13. 09

3.7 1.01 1.3 0 3.33 3.87 12. 02 12. 25 13. 51

3.8 1.06 1. 35 3.47 4.00 12 .58 12.7 7 13.9 5

3.9 1.10 1.41 3 .61 4.13 13.12 13.30 14. 41

4.0 1.14 1.47 3.75 4. 26 13. 64 13. 85 14. 88

4.1 1.18 1.53 3.89 4.39 1 4.12 14 .41 15. 38

4.2 1.23 1. 59 4.02 4.53 14. 52 14.9 8 15.89

4.3 1.27 1.6 6 4 .15 4.68 14 .84 15 .55 16. 44

4.4 1.31 1.7 3 4.28 4. 82 - 16.13 17.0 0

4.5 1.35 1. 81 4.40 4.98 - 16. 69 17. 59

4.6 1.39 1.91 4. 52 5.13 - 17. 25 18. 21

4.7 1.43 2.00 4.62 5.29 - 17. 80 18 .86

4.8 1.47 2.08 4.72 5.4 6 - 18 .32 19. 54

4.9 1.51 2 .16 4. 82 5.6 4 - 18 .80 20. 24

5.0 1.5 4 2 .23 4.9 0 5.81 - 19. 25 20.97

5.1 1.6 0 2.30 4.97 6.0 0 - 19. 65 21.7 3

5.2 1.6 6 2.36 5.04 6.19 - 19.9 8 22.51

5.3 1.72 2 .41 5.0 9 6. 38 - 20. 24 23.30

5.4 1.79 2.46 5.14 6.57 - 20 .41 2 4.12

5.5 1.8 7 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 - - 2 7.3 8

5.9 2.09 - - 7. 52 - - 28.16

6.0 2.14 - - 7. 69 - - 28.90

6.1 2 .18 - - 7.8 5 - - 29.59

6.2 2.22 - - 7. 98 - - 3 0.21

6.3 2.26 - - 8.09 - - 30. 74

6.4 - - - 8 .17 - - 3 1.17

6.5 - - - 8.22 - - 31.47

6.6 - - - - - - 31. 61

Data sheet Manual Presetting Valves LENO™ MSV-B

Kv-Signal

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