Leno MSV

Product store

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

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

Software

Danfoss SET 365 software

Our advanced Danfoss SET 365 3D design software will help you to design and calculate HVAC systems with Danfoss products. A 1-year subscription is FREE available for students, designers and other interested professionals.

Danfoss SET 365 software

Learning

Webinar Proportional balancing

If you want to learn more about commissioning of a HVAC system with Manual Balancing Valves, you should have a look at our on-demand webinar recording ‘Learn how to do proportional balancing and understand the process’. Our experts Jan Skomina and Stanley de Vries will guide you through the process step-by-step.

Watch the recording here

Tools and apps

Hydronic balancing tool for static balancing valves

Software tools

Verify flow using Installer App

The Installer App allows you to easily verify the flow in different LENO™ valves. In the Quick tools section, choose the Hydronic balancing tool. Then select the valve and the desired dimension and get the answer immediately.

Download Installer App for iOS Download Installer App for Android Read more about the Installer App

3D models and drawings

BIM library for MEP designs

Get your 3D BIM objects and start design constant flow HVAC solutions.