Danfoss LENO MSV-BD Data sheet

Data sheet

Manual presetting valves LENO™ MSV-BD

Description

Application

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.

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

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 memor y.

Air handling unit

• For balancing.

• Shut-off function for service/repair.

• For constant flow.

• For balancing.

• Shut-off function for service/repair.

Data sheet LENO™ MSV-BD

Application

Fan coils 1-pipe system

• For flow verification.

• Shut-off function for service/repair.

DOMEST IC HOT WATER SYSTEMS: Dependin g on local legislation it can b e used in Domestic hot water a pplications.

• For balancing.

• Shut-off function for service/repair.

Ordering

LENO™ MSV-BD valve with internal thread

Typ e Material

DZR brass

Size k

(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

DN 32 18 1¼" 1 003Z4004 DN 40 26 1½" 1 003Z4005 DN 50 40 2" 1 003Z4006 DN 15 3.0 ½" 8 003 Z4261 DN 20 6.6 ¾" 8 003Z4262 DN 25 9.5 1" 8 003Z4263

Connection Quantity Code No.

LENO™ MSV-BD valve with external thread

Typ e Material

DZR brass

Size k

(mm) (m3/h)

DN 15 LF 003Z4100

DN 15 3.0 G ¾ A DN 20 6.0 G 1 A 003 Z4102

LENO™ MSV-BD/S set solution

Typ e Material

Size k

(mm) (m3/h) (l/h)

DN 15 3.0 281 ½" 003 Z4051 DN 20 6.0 277 ¾" 003Z4052

DZR brass

DN 25 9.5 316 1" 003Z4053 DN 32 18 305 1¼" 003Z4054 DN 40 26 208 1½" 003Z4 055 DN 50 40 308 2" 003Z4056

Corrosion resistant brass

Eurocone DIN V 3838

Drain ow is measured at 1 bar static pressure and 0.1 bar dierential pressure.

Drain flow

Connection Code No.

003 Z4101

Connection Code No.

2 | AI144986479776en-001201 © Danfoss | 2020.08

Data sheet LENO™ MSV-BD

Ordering (continued)

Accessories

Typ e Code No.

Standard test plugs, 2 pcs. 003Z4662 Measuring test plugs, 53 mm, red and blue 003Z3946 Operating handle 003Z4 652 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) 00 3Z8261 Identification tag & strips, 10 pcs. 003Z466 0 MSV-BD insulation, DN 15 003Z 4781 MSV-BD insulation, DN 20 003Z478 2 MSV-BD insulation, DN 25 003Z478 3 MSV-BD insulation, DN 32 003Z478 4 MSV-BD insulation, DN 40 003Z478 5 MSV-BD insulation, DN 50 003Z478 6

LENO™ MSV-BD valve with external thread

Pipe

(mm)

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 013G416 5 15 x 2.5 G ¾ 013G4155 013G4185 16 x 1.5 G ¾ 013G415 7

16 x 2 G ¾ 013G 4156 013G 4186

16 x 2.25 G ¾ 013G 4187

17 x 2 G ¾ 013G 4162

18 x 2 G ¾ 013 G4158 013 G4188

18 x 2.5 G ¾ 013G4159

20 x 2 G ¾ 013G 4160 013G 4190

20 x 2.5 G ¾ 013G 4161 013G419 1

Valve thread PEX fittings, Code no. Alupex fittings, Code no.

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

G 1 x 18 013U 0134

G 1 x 22 013U 0135

AI144986479776en-001201 | 3© Danfoss | 2020.08

Data sheet LENO™ MSV-BD

5 4 3 2 1

Design

Materials and parts in contact with water

Valve body DZR brass

O-rings EPDM

Ball Brass/chromium plated

Ball sealing Teflon

1. Valve body

2. Ball seat

3. Ball

4. Throttle bush

5. Support screw

6. O-ring

7. Shut-o bush

8. O-ring

9. O-ring

10. O-ring

11. Retaining ring (corrosion protected)

12. Spring

13. Valve top

14. Spindle

15. O-ring

16. Rotation lock

17. Spindle head

18. Retaining ring, corrosion protected

19. Strips, 2 pcs.

20. Test plugs protection screw

21. Hose connection

22. Stop plug

Technical data

Fitting

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.

2. Release the setting lock (green).

15 86/67 20 89/69 25 91/ 71 32 118 /8 4 40 118/8 4 50 124/ 90

R1/R 2

(mm)

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.

Data sheet LENO™ MSV-BD

Shut-off

Draining

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

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.

Data sheet LENO™ MSV-BD

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

Measuring

Measuring accuracy

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.

Error in % of measured k

% 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:

∆P

val

= ∆P

sig



v-sig

)

v-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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