Danfoss TVM-W Data sheet

Data sheet

Thermostatic Mixing Valve
TVM-W

Description

The TVM-W is a self-acting mixing valve, which
provides mixed water at a constant temperature.
It is used for instant supply of water at a required
temperature in domestic hot water applications.

- The quick reaction of the thermostatic
elements ensures accurate temperature
control.

- It is suitable for single outlets (e.g. baths,
basins, showers and bidets) or small numbers
of grouped outlets.

- Its robust and non-complex construction
provides superior reliability, improved
safety, energy efficiency and user comfort.
If the cold supply fails, a total and fast flow
shut-off results in greater safety for the end­user. Simplified design and construction,
with fewer components, ensures superior
reliability, longevity and safety.

- The TVM-W ensures a high level of protection
from scalding, which is important especially in
hospitals, schools or multi family houses (e.g.
in case of legionella disinfections).

- TVM-W “Low lead brass” valves meet the
new regulations enforced by the European
Drinking Water Directive that comes into
effect in December 2013.

Main data:

• Setting temperature in the range 35 … 70 °C

• Preset and locked at 50 °C

• Locking function locks the set temperature

• DN 20 and DN 25

• Shuts off flow if the hot or cold supply fails

• Maintains the temperature by varying supply
conditions

• integrated non-return valves

Ordering

Typ e DN Connection

TVM-W

E = extrac ted (outlet) quantity at ∆p = 1.0 bar

1)

with check valve

20 G 1 35 … 70 35 2.1 00 3Z3145

25 G 1⁄ 35 … 70 55 3.3 0 03Z314 6

Temp. range

(°C)

E

(l/min)

kVS

1)

Code No.

Accessories and spare parts

Typ e

Non-return valve DN 20 10 90 00 3Z3137

Non-return valve DN 25 10 90 003Z 3138

Max. pressure

(bar)

Thermostatic element 003Z3139

Fitting set DN 20 00 3Z3134

Fitting set DN 25 00 3Z3135

Max. temperature

(°C)

Code No.

© Danfoss | 2022.03 AI120786478310en-011001 | 1

Data sheet Thermostatic Mixing Valve TVM-W

Technical data

Applications

Factory temperature presseting

50

Cold water supply temperature 10

Hot water supply temperature 70

Temperature stability (depend on pressure and temperature)

Max. hot water temperature 90

Max. operating pressure

Min. operating pressure 0.5

Max. inlet pressure diferential

2)

°C

3)

± 3

1)

10

bar

2

Supply pressure, (dynamic) 5

Materials

Body CW626N (Low Lead brass) + antilimescale treatment

Plastic cap Polystyrene

Spring SS steel 1.4301 (inoxydable)

Sealing EPDM

1)

100 °C without Non -return valve

2)

Betwee n cold and worm inlets

3)

Cold inlet water te mperature should not be a bove 15°C

Recommended scheme of hot
water installation with TVM-W

Recommended installation of hot water and circulation system.

2 | AI120786478310en-011001 © Danfoss | 2022.03

Data sheet Thermostatic Mixing Valve TVM-W

CENTRAL INSTALLATION

COLD

Pressure diagram

Installation

Spare parts

1. Non-return valve

2. Fitting set

3. Thermostatic element

By mixing hot and cold water to achieve the
desired temperature, the valve effectively
provides a greater volume of hot water from the
given tank size.

High temperature water storage prevents the
growth of legionella bacteria.

The valve can be installed in any position into the
riser:

• In situations where the hot pressure may
exceed the cold pressure and on pumped
systems, non-return valves must be fitted to
both hot and cold inlets.

• A TVM-W will provide optimum performance
when installed with hot and cold supplies of
equal dynamic pressure, i.e. pressure under
flow conditions.

• In order to ensure the correct function of
the failsafe and optimum performance it is
recommended that the hot supply tempe­rature is at least 10 °C higher than the set
temperature.

1

CENTRAL INSTALLATION

COLD

Typical installation of the TVM-W - with boiler
application.

3

0304 7M

G

2

Fitting set

DN G

20 1 ⁄

25 1⁄ 1

AI120786478310en-011001 | 3© Danfoss | 2022.03

Data sheet Thermostatic Mixing Valve TVM-W

G

Locking the presetting

60

°C

50
40
30
20

①

MIX °C

40

60

20

80

0

②

60

°C

50
40
30
20

Dimensions

③

④

+

-

⑤

°C MIX

40

60

20

80

0

2,5

G

max. 122

46

Typ e DN

TVM-W

A

mm

20 77 1

25 77 1⁄

G

“

G

A

© Danfoss | DCS-SGDPT/SI | 2022.034 | AI120786478310en-011001