Danfoss LENO MSV-BD Data sheet

Data sheet

Manual presetting valves LENO™ MSV-BD

Description	LENO™ MSV-BD is a range of manual valves for
	balancing flow in heating and cooling systems.

LENO™ MSV-BD is a combined presetting and shut off valve with a range of unique features:

•Removable hand wheel for easy mounting.

•360° turnable measuring station for convenient measuring and draining.

•Numeric presetting scale, visible from more angles.

•Easy locking of presetting.

•Built-in test plugs for Ø 3 mm needles.

•Drain connection with separate draining of inlet and outlet side of valve.

•Open-close with Allen key for extra force.

•Open-closed colour indicator.

It is recommended to use LENO™ MSV-BD in constant flow systems. The valve may be mounted in flow or return.

DN 15 and 20 valves are available with internal or external thread. Other dimensions with internal thread.

Danfoss PFM 1000/PFM 100 measuring instruments contain valve data for LENO™ MSV-BD in memory.

Application

Boiler, flat station or heat pump

Air handling unit

in 1-family houses

•For balancing.

•Shut-off function for service/repair.

•For constant flow.

•For balancing.

•Shut-off function for service/repair.

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Data sheet

LENO™ MSV-BD

Application

Fan coils

1-pipe system

•For flow verification.

•Shut-off function for service/repair.

•For balancing.

•Shut-off function for service/repair.

DOMESTIC HOT WATER SYSTEMS: Depending on local legislation it can be used in Domestic hot water applications.

Ordering	LENO™ MSV-BD valve with internal thread
	Type	Material		Size		kVS	Connection	Quantity	Code No.
				(mm)		(m3/h)
				DN 15 LF		2.5	½"	1	003Z4000
				DN 15		3.0	½"	1	003Z4001
				DN 20		6.0	¾"	1	003Z4002
				DN 25		9.5	1"	1	003Z4003
		DZR brass	1)	DN 32		18	1¼"	1	003Z4004
				DN 40		26	1½"	1	003Z4005
				DN 50		40	2"	1	003Z4006
				DN 15		3.0	½"	8	003Z4261
				DN 20		6.6	¾"	8	003Z4262
				DN 25		9.5	1"	8	003Z4263

LENO™ MSV-BD valve with external thread

	Type	Material	Size	kVS	Connection	Code No.
			(mm)	(m3/h)
			DN 15 LF			003Z4100
		DZR brass 1)	DN 15	3.0	G ¾ A 2)	003Z4101
			DN 20	6.0	G 1 A	003Z4102

LENO™ MSV-BD/S set solution

Type	Material		Size	kVS	Drain flow 3)	Connection	Code No.
			(mm)	(m3/h)	(l/h)
			DN 15	3.0	281	½"	003Z4051
			DN 20	6.0	277	¾"	003Z4052
	DZR brass	1)	DN 25	9.5	316	1"	003Z4053
			DN 32	18	305	1¼"	003Z4054
			DN 40	26	208	1½"	003Z4055
			DN 50	40	308	2"	003Z4056

1)Corrosion resistant brass

2)Eurocone DIN V 3838

3)Drain flow is measured at 1 bar static pressure and 0.1 bar differential pressure.

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Data sheet	LENO™ MSV-BD
Ordering (continued)	Accessories
	Type				Code No.
	Standard test plugs, 2 pcs.				003Z4662
	Measuring test plugs, 53 mm, red and blue				003Z3946
	Operating handle				003Z4652
	Drain connection, ½" thread				003Z4096
	Drain connection, ¾" thread				003Z4097
	Flow measuring instrument PFM 1000 (10 bar)				003Z8260
	Flow measuring instrument PFM 1000 (20 bar)				003Z8261
	Identification tag & strips, 10 pcs.				003Z4660
	MSV-BD insulation, DN 15				003Z4781
	MSV-BD insulation, DN 20				003Z4782
	MSV-BD insulation, DN 25				003Z4783
	MSV-BD insulation, DN 32				003Z4784
	MSV-BD insulation, DN 40				003Z4785
	MSV-BD insulation, DN 50				003Z4786
	LENO™ MSV-BD valve with external thread
	Pipe		Valve thread	PEX fittings, Code no.	Alupex fittings, Code no.
	(mm)
	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
	G 1 x 18	013U0134
	G 1 x 22	013U0135

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Data sheet	LENO™ MSV-BD
Design						1.	Valve body
	18					2.	Ball seat
						3.	Ball
	17					4.	Throttle bush
	16					5.	Support screw
	15					6.	O-ring
						7.	Shut-off bush
	14
					19	8.	O-ring
	13				20	9.	O-ring
	12				21	10.	O-ring
						11.	Retaining ring (corrosion protected)
	11
						12.	Spring
	10				22	13.	Valve top
	9					14.	Spindle
						15.	O-ring
	8
						16.	Rotation lock
	7					17.	Spindle head
	6					18.	Retaining ring, corrosion protected
	5	4	3	2	1	19.	Strips, 2 pcs.
						20.	Test plugs protection screw
						21.	Hose connection
						22.	Stop plug

Materials and parts in contact with water

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

Technical data

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 - 20 valves with external thread

Danfoss offers a complete range of compression fittings for steel, cobber and PEX pipes.

	DN	R1/R2
		(mm)
	15	86/67
	20	89/69
	25	91/71
	32	118/84
	40	118/84
	50	124/90

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Data sheet	LENO™ MSV-BD
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

Draining	Note!
	The drain connection is an accessory and
	must be purchased separately.
	The drain tap can rotate 360 degrees for
	convenient operation.
	Draining the system pipes can be done
	selectively:
	When the red test plug is opened, the valve inlet
	pipe is drained.
	Opening the blue test plug will drain the pipe
	on the valve outlet side. Test plugs unscrewing
	protection screw is located between valve test
	plugs.

Setting and sealing

The valve has a presetting feature for setting/ adjusting 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.The setting can be sealed by using a strip as shown.

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Data sheet	LENO™ MSV-BD
Measuring	The flow through the LENO™ MSV-BD valve can
	be measured using Danfoss PFM 1000 or other
	brands of measuring instruments.
	The LENO™ MSV-BD valve is supplied with two
	test plugs for Ø3 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.

Measuring accuracy

	16
	14
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	0%	10%	20%	30%	40%	50%	60%	70%	80%	90%	100%

% of max. setting

LENO™ MSV-BD is very accurate, due to the separate functions for presetting and shut-off. Valve can be mounted everywhere in the system (closed to T-pieces, elbows, pumps, etc.), since

it is unaffected by turbulence in any setting or instalation.

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	kv-signal values are used for non-Danfoss
	measuring instruments. Danfoss PFM 1000 have
	all data in memory, and the instruments are
	using this formula:	k
				2
	∆Pval = ∆Psig (	v-sig	)
		kv-val

∆p across the test plugs (kv-sig) and ∆p across the valve (kv-val) is not the same due to turbulence influence for pressure measuring.

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