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840 ThermoMix 2.0

840 ThermoMix 2.0

  • Low internal leakage
  • Suitable for motorization
  • Broad product range

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 access and installation in tight spaces. The valve can be installed in any position and LK 840 ThermoMix® 2.0 can easily be adapted for right- or left-hand mounting.

The valve requires no maintenance but the installation should be checked regularly.

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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 1: 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

* Double torque if the valve is used diverting.

Documents


PDF
Products sheet

PDF
Certificate / Type approval

PDF
Instruction manual

Variants

Article Dim. Kvs m³/h A mm B mm C mm D mm E mm F mm Weight (kg) Dimensional sketch Item List
181908 F ½” 0,6 70 35 69 18 29 81 0.5
181909 F ½” 1,0 70 35 69 18 29 81 0.5
181910 F ½” 1,6 70 35 69 18 29 81 0.5
181911 F ½” 2,5 70 35 69 18 29 81 0.5
181912 F ¾” 4,0 70 35 69 18 29 81 0.5
181913 F ¾” 6,3 70 35 69 18 29 81 0.5
181914 F 1″ 6,3 70 35 69 20 29 83 0.5
181915 F 1″ 10,0 70 35 69 20 29 83 0.5
181916 F 1¼” 16,0 84 42 77 24 32 90 0.8

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