Danfoss LENO MSV-B Data sheet

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.

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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.

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Data sheet

Manual Presetting Valves LENO™ MSV-B

Ordering

LENO™ MSV-B valve with internal thread

Type

Material

Size

kvs (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

DN 25

9.5

Rp 1”

003Z4033

DN 32

Rp 1¼”

003Z4034

DN 40

Rp 1½”

003Z4035

DN 50

Rp 2”

003Z4036

*Corrosion resistant brass

LENO™ MSV-B valve with external thread

Type

Material

Size

kvs (m³/h)

Connection

Code no.

DZR* Brass

DN 15 LF

2.5

G ¾ A**

003Z4131

DN 15

3.0

G ¾ A**

003Z4130

**Eurocone DIN V 3838

Accessories

Type

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)

003Z8261

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

013G4150

12 x 2

G ¾

013G4152

013G4182

13 x 2

G ¾

013G4153

14 x 2

G ¾

013G4154

013G4184

15 x 1.7

G ¾

013G4165

15 x 2.5

G ¾

013G4155

013G4185

16 x 1.5

G ¾

013G4157

16 x 2

G ¾

013G4156

013G4186

16 x 2.25

G ¾

013G4187

17 x 2

G ¾

013G4162

18 x 2

G ¾

013G4158

013G4188

18 x 2.5

G ¾

013G4159

20 x 2

G ¾

013G4160

013G4190

20 x 2.5

G ¾

013G4161

013G4191

Compression fittings for valves with external thread

Steel/copper pipes

Dimension

Code no.

G ¾ x 15

013G4125

G ¾ x 16

013G4126

G ¾ x 18

013G4128

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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
	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 %)

Fitting	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.

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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Data sheet	Manual Presetting Valves LENO™ MSV-B
Shut-Off	In order to shut-off the valve the handle must be
Shut-Off	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

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
	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

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Data sheet

Manual Presetting Valves LENO™ MSV-B

Measuring Accuracy

Maximum error in measured ﬂow [%]

16
14
12
10
8
6
4
2
0
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
	measuring instruments. Danfoss PFM1000 have
	all data in memory, and the instruments are
	using this formula:
	Δp across the measuring nipples (kv-sig) and Δp
	across the valve (kv-val) is not the same due to
	turbulence influence for pressure measuring.

	kv–sig	2
∆Pval= ∆Psig 1+4∙
	kv–val

* with software 9.4 or higher

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Data sheet	Manual Presetting Valves LENO™ MSV-B
Kv-Signal Values
Kv-Signal Values	Setting	DN 15LF	DN 15	DN20	DN25	DN32	DN40	DN50
	0.0	0.07	0.10	0.12	0.34	0.51	1.05	1.75

	0.1	0.08	0.11	0.16	0.44	0.73	1.20	2.01
	0.2	0.09	0.12	0.20	0.53	0.92	1.36	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	1.08	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	1.03	1.29	3.38	4.16	5.18
	1.5	0.30	0.44	1.09	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	1.23	1.55	4.18	4.96	6.13
	1.8	0.37	0.54	1.30	1.65	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	7.14

	2.1	0.46	0.65	1.53	1.96	5.35	6.08	7.49
	2.2	0.49	0.69	1.61	2.07	5.65	6.38	7.84

	2.3	0.52	0.73	1.69	2.18	5.96	6.68	8.19
	2.4	0.56	0.77	1.78	2.29	6.27	6.99	8.55
	2.5	0.59	0.80	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	7.98	9.64

	2.8	0.69	0.93	2.17	2.77	7.67	8.33	10.00
	2.9	0.73	0.97	2.29	2.89	8.06	8.70	10.37

	3.0	0.76	1.01	2.40	3.01	8.48	9.08	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	1.30	3.33	3.87	12.02	12.25	13.51
	3.8	1.06	1.35	3.47	4.00	12.58	12.77	13.95

	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	14.12	14.41	15.38
	4.2	1.23	1.59	4.02	4.53	14.52	14.98	15.89
	4.3	1.27	1.66	4.15	4.68	14.84	15.55	16.44

	4.4	1.31	1.73	4.28	4.82	-	16.13	17.00
	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	5.46	-	18.32	19.54
	4.9	1.51	2.16	4.82	5.64	-	18.80	20.24

	5.0	1.54	2.23	4.90	5.81	-	19.25	20.97
	5.1	1.60	2.30	4.97	6.00	-	19.65	21.73
	5.2	1.66	2.36	5.04	6.19	-	19.98	22.51

	5.3	1.72	2.41	5.09	6.38	-	20.24	23.30
	5.4	1.79	2.46	5.14	6.57	-	20.41	24.12

	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

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Data sheet

Manual Presetting Valves LENO™ MSV-B

Kv-Signal

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