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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 556 AntiFreeze

LK 556 AntiFreeze

  • Protects the heating system from frost damage
  • Maintenance-free valve
  • Optional insulation helps reduce energy loss

LK 556 AntiFreeze protects your heating system, usually in an air/water heat pump, if the fluid temperature should drop below +3°C by draining the system. This prevents the heating system from freezing. If the...

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LK 556 AntiFreeze

  • Variants
  • Detailed Information
  • Documentation

Variants

LK 556 - Male thread

LK 556 - Male thread 2 variants

Article Opening temp. Dim. DN Kvs m³/h A mm B mm C mm Weight (kg) Dimensional sketch Item List
182740 3 M 1" DN 25 55.0 55 114 32 0.35
182741 3 M 1¼" DN 32 70.0 55 123 42 0.4

182740

Opening temp. 3
Dim. M 1"
DN DN 25
Kvs m³/h 55.0
A mm 55
B mm 114
C mm 32
Weight (kg) 0.35
Dimensional sketch
Item list

182741

Opening temp. 3
Dim. M 1¼"
DN DN 32
Kvs m³/h 70.0
A mm 55
B mm 123
C mm 42
Weight (kg) 0.4
Dimensional sketch
Item list
LK 556 - Compression fitting

LK 556 - Compression fitting 3 variants

Article Opening temp. Dim. DN Kvs m³/h A mm B mm C mm Weight (kg) Dimensional sketch Item List
182805 3 Ø22 DN 20 40.0 97 114 32 0.65
182806 3 Ø28 DN 28 40.0 95 114 42 0.65
182807 3 Ø35 DN 35 45.0 95 123 42 0.7

182805

Opening temp. 3
Dim. Ø22
DN DN 20
Kvs m³/h 40.0
A mm 97
B mm 114
C mm 32
Weight (kg) 0.65
Dimensional sketch
Item list

182806

Opening temp. 3
Dim. Ø28
DN DN 28
Kvs m³/h 40.0
A mm 95
B mm 114
C mm 42
Weight (kg) 0.65
Dimensional sketch
Item list

182807

Opening temp. 3
Dim. Ø35
DN DN 35
Kvs m³/h 45.0
A mm 95
B mm 123
C mm 42
Weight (kg) 0.7
Dimensional sketch
Item list
LK 556 Kit - incl. 2 x LK 556 and insulation

LK 556 Kit - incl. 2 x LK 556 and insulation 2 variants

Article Opening temp. Dim. Kvs m³/h Note Weight (kg) Item List
182776 3 M 1" 55.0 Contains 2 pieces 182740 and 2 pieces 187109 0.8
182777 3 M 1¼” 70.0 Contains 2 pieces 182741 and 2 pieces 187109 0.9

182776

Opening temp. 3
Dim. M 1"
Kvs m³/h 55.0
Note Contains 2 pieces 182740 and 2 pieces 187109
Weight (kg) 0.8
Item list

182777

Opening temp. 3
Dim. M 1¼”
Kvs m³/h 70.0
Note Contains 2 pieces 182741 and 2 pieces 187109
Weight (kg) 0.9
Item list

Detailed Information

Description

LK 556 AntiFreeze protects your heating system, usually in an air/water heat pump, if the fluid temperature should drop below +3°C by draining the system. This prevents the heating system from freezing.

If the valve opens and drains the system, no action is required to reset the valve, the system can be refilled again as soon as normal circulation in the heating system is resumed.

Insulation is available as an accessory for maximum energy saving. Refer to Accessories & Spare parts.

Technical Data

Max. working pressure: 0.6 MPa (6 bar)
Min. working pressure: 0.05 Mpa (0.5 bar)
Working temperature: 0-75 °C
Opening temperature: 3 °C
Ambient temperature: -30-60 ºC
Storage temperature: -30-60 ºC
Thread standard: G - male thread
Media: Water
Material, valve body: Brass EN 12165 CW617N
Material, sealing: EPDM

Application

LK 556 AntiFreeze

Documentation

Product sheet

LK 556 AntiFreeze

Instruction manual

LK 556 AntiFreeze-Instruction_248388

Certificate/Type approval

CE Declaration of Conformity - LK 556 AntiFreeze