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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

  • LK Pex

    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 820 ThermoVar®

LK 820 ThermoVar®

  • Position-independent

LK 820 ThermoVar® is a 3-way thermic loading valve for solid fuel/storage tank installations. The valve is intended to ensure both an optimal temperature stratification in the storage tank and a high return tem...

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LK 820 ThermoVar®

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

Variants

LK 820 - Female thread

LK 820 - Female thread 11 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
180493 45 F 1" 9,0 82 41 67 21 35 0.7
180500 55 F ¾" 6,0 80 40 66 21 35 0.7
180501 55 F 1" 9,0 82 41 67 21 35 0.7
180502 55 F 1¼" 12,0 84 42 68 24 39 0.8
180508 61 F ¾" 6,0 80 40 66 21 35 0.7
180509 61 F 1" 9,0 82 41 67 21 35 0.7
180510 61 F 1¼" 12,0 84 42 68 24 39 0.8
180517 66 F 1" 9,0 82 41 67 21 35 0.7
180525 72 F 1" 9,0 82 41 67 21 35 0.7
180526 72 F 1¼" 12,0 84 42 68 24 39 0.8
180534 80 F 1¼" 12,0 84 42 68 24 39 0.8

180493

Opening temp. °C 45
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) 0.7
Dimensional sketch
Item list

180500

Opening temp. °C 55
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) 0.7
Dimensional sketch
Item list

180501

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) 0.7
Dimensional sketch
Item list

180502

Opening temp. °C 55
Dim. F 1¼"
Kvs m³/h 12,0
A mm 84
B mm 42
C mm 68
D mm 24
E mm 39
Weight (kg) 0.8
Dimensional sketch
Item list

180508

Opening temp. °C 61
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) 0.7
Dimensional sketch
Item list

180509

Opening temp. °C 61
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) 0.7
Dimensional sketch
Item list

180510

Opening temp. °C 61
Dim. F 1¼"
Kvs m³/h 12,0
A mm 84
B mm 42
C mm 68
D mm 24
E mm 39
Weight (kg) 0.8
Dimensional sketch
Item list

180517

Opening temp. °C 66
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) 0.7
Dimensional sketch
Item list

180525

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) 0.7
Dimensional sketch
Item list

180526

Opening temp. °C 72
Dim. F 1¼"
Kvs m³/h 12,0
A mm 84
B mm 42
C mm 68
D mm 24
E mm 39
Weight (kg) 0.8
Dimensional sketch
Item list

180534

Opening temp. °C 80
Dim. F 1¼"
Kvs m³/h 12,0
A mm 84
B mm 42
C mm 68
D mm 24
E mm 39
Weight (kg) 0.8
Dimensional sketch
Item list

Other temperatures and dimensions on request.

LK 820 - Male thread

LK 820 - Male thread 10 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
180503 55 131 M ¾" 4,0 80 40 66 21 35 0.7
180504 55 131 M 1" 6,0 80 40 66 21 35 0.7
180505 55 131 M 1¼" 9,0 84 42 68 21 35 0.7
180506 55 131 M 1½" 12,0 84 42 68 24 39 0.8
180512 61 142 M 1" 6,0 80 40 66 21 35 0.7
180513 61 142 M 1¼" 9,0 84 42 68 21 35 0.7
180514 61 142 M 1½" 12,0 84 42 68 24 39 0.8
180520 66 151 M 1" 6,0 80 40 66 21 35 0.7
180528 72 162 M 1" 6,0 80 40 66 21 35 0.7
180530 72 162 M 1½" 12,0 84 42 68 24 39 0.8

180503

Opening temp. °C 55
Opening temp. °F 131
Dim. M ¾"
Kvs m³/h 4,0
A mm 80
B mm 40
C mm 66
D mm 21
E mm 35
Weight (kg) 0.7
Dimensional sketch
Item list

180504

Opening temp. °C 55
Opening temp. °F 131
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) 0.7
Dimensional sketch
Item list

180505

Opening temp. °C 55
Opening temp. °F 131
Dim. M 1¼"
Kvs m³/h 9,0
A mm 84
B mm 42
C mm 68
D mm 21
E mm 35
Weight (kg) 0.7
Dimensional sketch
Item list

180506

Opening temp. °C 55
Opening temp. °F 131
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) 0.8
Dimensional sketch
Item list

180512

Opening temp. °C 61
Opening temp. °F 142
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) 0.7
Dimensional sketch
Item list

180513

Opening temp. °C 61
Opening temp. °F 142
Dim. M 1¼"
Kvs m³/h 9,0
A mm 84
B mm 42
C mm 68
D mm 21
E mm 35
Weight (kg) 0.7
Dimensional sketch
Item list

180514

Opening temp. °C 61
Opening temp. °F 142
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) 0.8
Dimensional sketch
Item list

180520

Opening temp. °C 66
Opening temp. °F 151
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) 0.7
Dimensional sketch
Item list

180528

Opening temp. °C 72
Opening temp. °F 162
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) 0.7
Dimensional sketch
Item list

180530

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) 0.8
Dimensional sketch
Item list

Other temperatures and dimensions on request.

LK 820 - Compression fitting

LK 820 - Compression fitting 1 artikel

Article Opening temp. °C Dim. Kvs m³/h A mm B mm C mm D mm E mm Weight (kg) Dimensional sketch Item List
181125 61 22 mm 6,0 114 57 83 21 35 0.8

181125

Opening temp. °C 61
Dim. 22 mm
Kvs m³/h 6,0
A mm 114
B mm 57
C mm 83
D mm 21
E mm 35
Weight (kg) 0.8
Dimensional sketch
Item list

Other temperatures and dimensions on request.

Detailed Information

Description

LK 820 ThermoVar® is a 3-way thermic loading valve for solid fuel/storage tank installations. The valve is intended to ensure both an optimal temperature stratification in the storage tank and a high return temperature to the boiler, thus incresasing the efficiency of the system. Tarring and condensation are prevented which prolongs boiler life.
LK 820 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 820 ThermoVar® can easily be adapted for right- or left-hand mounting. The valve can be installed in three different positions. In the standard version the valve is intended for installation in position II. It can easily be adapted for installation in position I. For delivery of valves intended for installation in position III, please contact our Sales Department.

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, M 2" - Coated Aluminium
Material, sealing: EPDM

Application

Position I

As soon as the boiler temperature has reached the selected opening temperature, the thermic valve allows hot water to load to the storage tank. Return water from the storage tank is mixed with supply water before it circulates back into the boiler. The loading temperature is at least the selected opening temperature.
A balancing valve should be installed in the circuit between boiler and loading valve.
The installation should be equipped with an LK 822 ThermoBac check valve to prevent self-circulation from storage tank to boiler after the fire has gone out. In case of power failure or pump breakdown the check valve automatically opens for self-circulation.
The circulating pump should be controlled by a thermostat that measures the boiler’s water or flue gas temperature.

Position II

As soon as the boiler temperature has reached the selected opening temperature, the thermic valve allows return water from the storage tank to mix with supply water before it circulates back into the boiler. The return temperature is at least the selected opening temperature.
A balancing valve should be installed in the circuit between boiler and loading valve.
The circulating pump should be controlled by a thermostat that measures the boiler’s water or flue gas temperature.

Position III

As soon as the boiler temperature has reached the selected opening temperature, the thermic valve allows return water from the storage tank to mix with supply water before it circulates back into the boiler. The return temperature is at least the selected opening temperature.
A balancing valve should be installed in the circuit between boiler and loading valve.
The installation should be equipped with an LK 822 ThermoBac check valve to prevent self-circulation from storage tank to boiler after the fire has gone out. In case of power failure or pump breakdown the check valve opens automatically for self-circulation.
The circulating pump should be controlled by a thermostat that measures the boiler’s water or flue gas temperature.

Technical Diagrams

CAPACITY DIAGRAM

Documentation

Product sheet

LK 820 ThermoVar®

Instruction manual

820 ThermoVar Pos. I _ II - Instruction_048313

Instruction manual

820 ThermoVar Pos III - Instruction_148475

Instruction manual

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

Certificate/Type approval

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

Applications

Biofuel ENG

Accessories & Spare parts

Article no. Article Position
187025 Thermostatic element 820, 45 °C 1
187026 Thermostatic element 820, 55 °C 1
187027 Thermostatic element 820, 61 °C 1
187028 Thermostatic element 820, 66 °C 1
187029 Thermostatic element 820, 72 °C 1
187030 Thermostatic element 820, 80 °C 1
187107 Insulation, DN 15-20 2
187108 Insulation, DN 25-32 2