Leno MSV

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Danfoss LENO^TM MSV manual balancing valves are designed to be the most versatile and practical in their category. Where the installation of other valves can be a challenge due to limited space, the LENO^TM MSV valves have a hand wheel that can temporarily be removed for easier installation in narrow spaces.

To save costs for shut-off valves the LENO^TM MSV-BD, MSV-B and MSV-O valves combine both a balancing and shut-off function. For that purpose, the principle design is based on a ball valve, making sure the shut-off offers 100% watertight

closure of the system. Using the shut-off ball valve will not influence the flow settings. Furthermore, the numeric pre-setting indications can be viewed from different angles making commissioning easier.

All three types of LENO^TM MSV valves offer built-in measuring nipples for 3 mm needles. In case of the MSV-BD these can, together with the draining, even be rotated over 360° to any preferred position. The MSV-O has a fixed venturi orifice. The MSV-S is a supplementary shut-off valve with built-in draining.

Features and benefits

Easy mounting

With a compact design and a hand wheel easy to remove, you need just a tiny room for installation. Conventional balancing valves need to be mounted in straight pipe to ensure accurate measurement. The LENO™ can be placed anywhere, for example just after an elbow, without influencing its accuracy.
Easy mounting

With a compact design and a hand wheel easy to remove, you need just a tiny room for installation. Conventional balancing valves need to be mounted in straight pipe to ensure accurate measurement. The LENO™ can be placed anywhere, for example just after an elbow, without influencing its accuracy.
Easy set point locking

A simple tap on the top of the hand wheel is enough to lock the setting.

For more convenience, the LENO™ MSV-BD comes with a green disposable key for unlocking. Simply press the green latch and the valve is unlocked. To make LENO™ tamper-proof a plastic tie-wrap (accessory) can be inserted
Easy shut-off function

When the LENO™ MSV is locked, the valve becomes a ball valve. This feature has several advantages: The valve has zero leakage, opening and closing the valve is much easier. Closing the valve will not influence the flow setting because the setting mechanism and the shut-off mechanism are completely separate. The position (open or closed) is clearly shown by a red indicator.

Documents

Documents
Type	Name	Language	Updated	Download	File type

Software

MagiCloud Drawing Library

Open in MagiCloud

Tools and apps

Software tools

LENO™ MSV App

Use this app to verify the flow in different LENO™ valves. Select the valve and the desired dimension and get the answer immediately.

Open in App Store

Tender texts

LENO™ - MSV-BD - Manual Balancing Valves

Product is a manual valve for balancing flow in heating, cooling and domestic hot water systems. Branch should be balanced with a manual pre-setting valve with test plugs for commissioning or/and flow verification, with following characteristics:

Shut-off function – with position indication - separated from the setting function
Visible Pre-setting from all sides
Possibility for tamper proof locking of the handle, to prevent unauthorized changes of the pre-setting
Removable handle during installation phase
360° rotating measuring station (drain tap and test plugs)
Possible of draining and filling the system on both sides of the valve
Bi-directional flow possible
Self sealing, parallel test plugs
Leakage rate A according to ISO 5208
Pressure class PN 20
DN 15(LF)-50 Connection type: Internal thread ISO 7/1 or
DN 15(LF)-20 Connection type: External thread ISO 228/1
Temperature range: -20 °C - 120 °C
DP Max 2.5 bar
Valve body DZR
Ball chromium plated
O-rings EPDM rubber

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