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    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

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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

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LK 822 ThermoBac

LK 822 ThermoBac

LK 822 ThermoBac is a 3-way check valve with low opening pressure and high fluid capacity. The valve is especially suitable for heating systems with storage tanks. The check valve prevents self-circulation from...

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LK 822 ThermoBac

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

Variants

LK 822 - Female thread

LK 822 - Female thread 2 variants

Article Dim. Kvs m³/h A mm B mm C mm D mm E mm Weight (kg) Dimensional sketch Item List
181109 F 1" 14,0 82 41 67 21 35 0.7
181110 F 1¼" 16,0 84 42 68 24 39 0.7

181109

Dim. F 1"
Kvs m³/h 14,0
A mm 82
B mm 41
C mm 67
D mm 21
E mm 35
Weight (kg) 0.7
Dimensional sketch
Item list

181110

Dim. F 1¼"
Kvs m³/h 16,0
A mm 84
B mm 42
C mm 68
D mm 24
E mm 39
Weight (kg) 0.7
Dimensional sketch
Item list

Other dimensions on request.

Detailed Information

Description

LK 822 ThermoBac is a 3-way check valve with low opening pressure and high fluid capacity. The valve is especially suitable for heating systems with storage tanks. The check valve prevents self-circulation from storage tank to boiler after the fire has gone out. In case of power failure or pump breakdown LK 822 ThermoBac automatically opens for self-circulation.

LK 822 can be equipped with an insulation - see under ­Accessories. For more information please see the product sheet for insulations.

The valve should be mounted so that the flap in the check valve closes by its own weight.

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

Technical Data

Working temperature: Min. 5 °C/Max. 110 °C
Ambient temperature: Min. 5 °C/Max. 60 °C
Max. working pressure: 1.0 MPa (10 bar)
Max. differential pressure: 50 kPa (0,5 bar)
Media 1: Water - Glycol mixture max. 50%
Thread standard: Rp - female thread, G - male thread
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 822 ThermoBac

Instruction manual

822 ThermoBac - Instruction_148359

Instruction manual

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

Certificate/Type approval

CE Declaration of Conformity - 822, 826.pdf

Accessories & Spare parts

Article no. Article Position
187072 Repair kit 822, DN 15-32 1
187107 Insulation, DN 15-20 2
187108 Insulation, DN 25-32 2