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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 521 MultiFill®
LK 521 MultiFill®
LK 521 MultiFill®

LK 521 MultiFill®

  • Compact design
  • Insulation protects against condensation and icing
  • Minimal pressure drop due to the placement of the filter in the ball

LK 521 MultiFill® is a combination valve for easy ­filling of refrigerant fluid into ground source heat systems. The valve has a filter to protect the evaporator against ­possible grit. Its compact construction...

Read more

LK 521 MultiFill®

  • Variants
  • Detailed Information
  • Documentation
  • Videos
  • Accessories & Spare parts
  • Questions & Answers

Variants

LK 521 - Male thread

LK 521 - Male thread 2 variants

Article Dim. Dim. 2 Kvs m³/h A mm B mm C mm D mm E mm F mm G mm H mm I mm J mm Weight (kg) Dimensional sketch Item List
091480 M 1" M ¾" 12,5 170 127 83 29 108 29 218 83 105 171 1.3
091481 M 1¼" M ¾" 22,0 173 136 87 29 115 29 218 83 105 171 1.7

091480

Dim. M 1"
Dim. 2 M ¾"
Kvs m³/h 12,5
A mm 170
B mm 127
C mm 83
D mm 29
E mm 108
F mm 29
G mm 218
H mm 83
I mm 105
J mm 171
Weight (kg) 1.3
Dimensional sketch
Item list

091481

Dim. M 1¼"
Dim. 2 M ¾"
Kvs m³/h 22,0
A mm 173
B mm 136
C mm 87
D mm 29
E mm 115
F mm 29
G mm 218
H mm 83
I mm 105
J mm 171
Weight (kg) 1.7
Dimensional sketch
Item list

Dimension 1 - Pipe connection to collector hose
Dimension 2 - Connection for filling of fluid
Dimensions according to dimensional drawings are guidance and not part of the specification

LK 521 - Male thread

LK 521 - Male thread 1 artikel

Article Dim. Dim. 2 Kvs m³/h A mm B mm C mm D mm E mm F mm G mm H mm Weight (kg) Dimensional sketch Item List
091483 M 2" M 1" 40,0 284 178 118 49 156 265 308 195 4.6

091483

Dim. M 2"
Dim. 2 M 1"
Kvs m³/h 40,0
A mm 284
B mm 178
C mm 118
D mm 49
E mm 156
F mm 265
G mm 308
H mm 195
Weight (kg) 4.6
Dimensional sketch
Item list

Dimension 1 - Pipe connection to collector hose
Dimension 2 - Connection for filling of fluid
Dimensions according to dimensional drawings are guidance and not part of the specification

Detailed Information

Description

LK 521 MultiFill® is a combination valve for easy ­filling of refrigerant fluid into ground source heat systems. The valve has a filter to protect the evaporator against ­possible grit. Its compact construction allows it to be installed in tight spaces. The valve comes with an insulation to ­protect against condensation and possible icing. LK 521 MultiFill® can also be used in other applications where filling and filtration are required.

Arrows on the valve body indicate the direction of the flow. The enclosed insulation should be used. Apart from cleaning the filter no maintenance is required.

LK 521 MultiFill® 25
for heat pumps, max. 12 kW
LK 521 MultiFill® 32
for heat pumps, max. 30 kW
LK 521 MultiFill® 50
for heat pumps, max. 50 kW

The filter should be cleaned immediately after installation, a month later and then every other year or when refilling fluid to the system. Check the installation regularly.


Technical Data

Max. working pressure: 1.0 MPa (10 bar)
Working temperature: Min. -20 °C/Max. 80 °C
Mesh opening, filter: Main valve DN25, DN32: 0,6 mm²
Main valve DN50: 1,0 mm²
Fillingvalve DN25, DN32: 0,7 mm²>
Fillingvalve DN50: 0,7 mm²
Thread standard: G - male thread
Media 1: Water - Glycol mixture max. 50%
Media 2: Water - Glycol mixture max. 30%
Media 3: Water - Ethanol mixture max. 30%
Material, valve body: Brass EN 12165 CW617N
Material, insulation: Expanded Polystyrene EPS
Material, filter element: Main valve: Plastic, Stainless steel Filling valve: Stainless steel
Material, sealing: EPDM
Other data: (Ethanol mixture - Working temperature: Max. 60 °C)

Ethanol mixture - Working temperature: Max. 60 °C

Application

Technical Diagrams

Capacity Diagram

Documentation

Product sheet

LK 521 MultiFill®

Instruction manual

521 MultiFill DN25-32 - Instruction_148827

Instruction manual

521 MultiFill DN50 - Instruction_248033

Applications

Heat pump ENG

Accessories & Spare parts

Article no. Article Position
095070 Filter and sealing DN 25 1
095071 Filter and sealing DN 32 1
095073 Ball valve incl. filter 2
095072 LK Insulation, 521 DN 25-32 3
187309 LK Insulation, 521 DN 50 4

Videos

LK 521 MultiFill® - Installation
LK 521 MultiFill® DN50 - Installation
LK 521 MultiFill® DN50 - Maintenance
LK 521 MultiFill® - Maintenance

Questions & Answers

How do I clean the filter on a LK 520 MultiFill?

You can do so easily by following the steps in the picture.

Images

Unfortunately, I threw away the insulation for my LK 521 MultiFill: can I buy this as a spare part?

Yes, this is available as a spare part for size DN 25 and DN32. You can find the article number under Accessories on the product page.