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LK Group

LK Group

  • LK Armatur

    LK Armatur is a leading producer in Europe, manufactures millions of valves per year for the global HVAC market. Our solutions are based on a comprehensive view of how valves, control units, components and prefabricated products work together. Svenska English Deutsch Italiano Yкраїнська Suomi

  • LK Systems

    LK Systems is the leading manufacturer of easy-to-install systems for heating and tap water distribution and pre-insulated pipes in the Nordics. Through our prefabrication factory, we also provide tailor-made solutions that simplify the installation process even further. Svenska English Norsk Suomi

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    Our PEX Pipe Extrusion business area is an innovative manufacturer of high-quality plastic pipes for the heating and plumbing industry. Our core is the efficient, high-technology production process for crosslinked PE-Xa pipes, resulting in products with a unique combination of flexibility and hydrostatic strength. English

  • LK Group

    LK is a family-owned trading and production group, operating on a global scale within the HVAC-area. We are the market leader in Sweden and has an increasing sales of products, systems and solutions in the Nordic countries, Europe and the USA. Svenska English
LK 821 ThermoVar®

LK 821 ThermoVar®

  • Position-independent

LK 821 ThermoVar® 3-way thermic zone valve is designed to change the direction of flow of the media in heating systems. The valve is controlled by the temperature of the media. With an LK 821 ThermoVar® install...

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LK 821 ThermoVar®

  • Variants
  • Detailed Information
  • Documentation
  • Accessories & Spare parts

Variants

LK 821 - Female thread

LK 821 - Female thread 4 variants

Article Opening temp. °C Dim. Kvs m³/h A mm B mm C mm D mm E mm Weight (kg) Dimensional sketch Item List
180540 45 F ¾" 6,0 80 40 66 21 35 0.8
180541 45 F1" 9,0 82 41 67 21 35 0.9
180549 55 F 1" 9,0 82 41 67 21 35 0.9
180573 72 F 1" 9,0 82 41 67 21 35 0.9

180540

Opening temp. °C 45
Dim. F ¾"
Kvs m³/h 6,0
A mm 80
B mm 40
C mm 66
D mm 21
E mm 35
Weight (kg) 0.8
Dimensional sketch
Item list

180541

Opening temp. °C 45
Dim. F1"
Kvs m³/h 9,0
A mm 82
B mm 41
C mm 67
D mm 21
E mm 35
Weight (kg) 0.9
Dimensional sketch
Item list

180549

Opening temp. °C 55
Dim. F 1"
Kvs m³/h 9,0
A mm 82
B mm 41
C mm 67
D mm 21
E mm 35
Weight (kg) 0.9
Dimensional sketch
Item list

180573

Opening temp. °C 72
Dim. F 1"
Kvs m³/h 9,0
A mm 82
B mm 41
C mm 67
D mm 21
E mm 35
Weight (kg) 0.9
Dimensional sketch
Item list

Other temperatures and dimensions on request.

LK 821 - Male thread

LK 821 - Male thread 2 variants

Article Opening temp. °C Opening temp. °F Dim. Kvs m³/h A mm B mm C mm D mm E mm Weight (kg) Dimensional sketch Item List
180544 45 113 M 1" 6,0 80 40 66 21 35 0.8
180578 72 162 M 1½" 12,0 84 42 68 24 39 1.0

180544

Opening temp. °C 45
Opening temp. °F 113
Dim. M 1"
Kvs m³/h 6,0
A mm 80
B mm 40
C mm 66
D mm 21
E mm 35
Weight (kg) 0.8
Dimensional sketch
Item list

180578

Opening temp. °C 72
Opening temp. °F 162
Dim. M 1½"
Kvs m³/h 12,0
A mm 84
B mm 42
C mm 68
D mm 24
E mm 39
Weight (kg) 1.0
Dimensional sketch
Item list

Other temperatures and dimensions on request.

Detailed Information

Description

LK 821 ThermoVar® 3-way thermic zone valve is designed to change the direction of flow of the media in heating systems. The valve is controlled by the temperature of the media. With an LK 821 ThermoVar® installed in, for example, a solar heating system an optimal stratification in the storage tank is obtained.

LK 821 can be equipped with an insulation - see under ­Accessories. For more information, please see the product sheet for insulations.

The valve can be mounted at any angle. LK 821 ThermoVar® can easily be adapted for right- or left-hand mounting.

Technical Data

Max. working pressure: 1.0 MPa (10 bar)
Max. differential pressure: 50 kPa (0.5 bar)
Working temperature: (45 - 55 °C) Min. 5 °C/Max. 95 °C
(61 - 80 °C) Min. 5 °C/Max. 110 °C
Opening temperature: 45 °C, 55 °C, 61 °C, 66 °C, 72 °C or 80 °C
Ambient temperature: Min. 5 °C/Max. 60 °C
Thread standard: Rp - female thread, G - male thread
Media 1: Water - Glycol mixture max. 50%
Material, valve body: Brass EN 12165 CW617N
Material, external cover: Brass EN 12165 CW617N
Material, sealing: EPDM

Application

Technical Diagrams

Capacity Diagram

Documentation

Product sheet

LK 821 ThermoVar®

Instruction manual

821 ThermoVar - Instruction_048316

Instruction manual

Insulation 820, 821, 822, 840, 841 - Instruction_148693

Certificate/Type approval

CE Declaration of Conformity - 820, 821, 823, 825.pdf

Applications

Solar heating ENG

Accessories & Spare parts

Article no. Article Position
187031 Thermostatic element 821, 45 °C 1
187032 Thermostatic element 821, 55 °C 1
187033 Thermostatic element 821, 61 °C 1
187034 Thermostatic element 821, 66 °C 1
187035 Thermostatic element 821, 72 °C 1
187036 Thermostatic element 821, 80 °C 1
187107 Insulation, DN 15-20 2
187108 Insulation, DN 25-32 2