Mixing Valve

LK 840 ThermoMix® 2.0

• Low internal leakage

• Suitable for motorization

• Broad product range

* Double torque if the valve is used diverting.

76

100

80

60

40

20

0

0

10

20

30

40

50

60

70

80

90

Opening angle (°)

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VALVE CHARACTERISTICS

CAPACITY DIAGRAM

LK 840 ThermoMix® 2.0 is a 3-way mixing valve which can be

used as a mixing or diverting valve in heating systems.

The valve is suitable for motorization and can be fitted with

insulation. For more information, see the insulation data sheet.

A compact design and a octagonal key grip gives an easier ac-

cess and installation in tight spaces. The valve can be installed

in any position and LK 840 ThermoMix® 2.0 can easily be adapt-

ed for right- or left-hand mounting.

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TECHNICAL DATA

Angle of rotation

90°/360°

Torque

< 1 Nm (DN15-32)*

< 2,1-2,3 Nm (DN40-50)*

Leakage

< 0,2% of Kvs at 100 kPa

Max. working pressure

1.0 MPa (10 bar)

Max. differential pressure

100 kPa (1 bar)

Working temperature

Min. 5 °C/Max. 110 °C

(120 °C briefly)

Ambient temperature

Min. 5 °C/Max. 60 °C

Thread standard

Rp - female thread,

G - male thread

Media

Water - Glycol mixture max. 50%

Ethanol mixture max. 30%

Material valve body

Brass EN 12165 CW617N

Material internal cover

PPS Composite

Material external cover

DN 15-32 Aluminium,

DN 40-50 Composite

Material slide/spindle

Brass EN 12165 CW617N

Material sealing

EPDM

Spindle sealing

Two O-rings

Return

Heat

F

l

o

w

(

%

)

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