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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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LK 556 AntiFreeze

New

LK 556 AntiFreeze

  • Protects heating system from freeze damage
  • The valve is maintenance-free
  • Insulation available as an accessory to save energy

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
  • Videos
  • Accessories & Spare parts

Variants

LK 556 - Male thread

LK 556 - Male thread 2 variants

Article Opening temp. °C Dim. DN Kvs m³/h A mm B mm C mm Weight (kg) Dimensional sketch Item List
182740 3 M 1" 25 55 55 114 32 0.35
182741 3 M 1¼" 32 70 55 123 42 0.4

182740

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

182741

Opening temp. °C 3
Dim. M 1¼"
DN 32
Kvs m³/h 70
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. °C Dim. DN Kvs m³/h A mm B mm C mm Weight (kg) Dimensional sketch Item List
182805 3 Ø22 20 40 97 114 32 0.65
182806 3 Ø28 25 40 95 114 42 0.65
182807 3 Ø35 25 45 95 123 42 0.7

182805

Opening temp. °C 3
Dim. Ø22
DN 20
Kvs m³/h 40
A mm 97
B mm 114
C mm 32
Weight (kg) 0.65
Dimensional sketch
Item list

182806

Opening temp. °C 3
Dim. Ø28
DN 25
Kvs m³/h 40
A mm 95
B mm 114
C mm 42
Weight (kg) 0.65
Dimensional sketch
Item list

182807

Opening temp. °C 3
Dim. Ø35
DN 25
Kvs m³/h 45
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 Note Weight (kg) Item List
182776 Contains 2 pieces 182740 and 2 pieces 187109 0.8
182777 Contains 2 pieces 182741 and 2 pieces 187109 0.9

182776

Note Contains 2 pieces 182740 and 2 pieces 187109
Weight (kg) 0.8
Item list

182777

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)
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 1: Water
Material, valve body: Brass EN 12165 CW617N
Material, sealing: EPDM

Application

Documentation

Product sheet

LK 556 AntiFreeze

Instruction manual

LK 556 AntiFreeze-Instruction_248388

Accessories & Spare parts

Article no. Article Position
187109 Insulation, DN 25-32 1
013010 Gasket Klingersil C4430 M32 2
013016 Gasket Klingersil C4430 M25 2
299189 Flanged pipe - 22 mm, F 1", L=120 mm 3
299190 Flanged pipe - 28 mm, F 1¼", L=120 mm 3
095380 Connection kit M ¾" x F 1" 4
095381 Connection kit F 1" x M 1¼" 4

Videos

LK 556 AntiFreeze