LK Armatur - 2025

TECHNICAL DATA

Angle of rotation

90°/360°

Leakage

< 0.1% of Kvs at 100 kPa

Operation time

12 seconds (90°)

Max. working pressure

1.0 MPa (10 bar)

Max. differential pressure

100 kPa (1 bar)

Working temperature

Min. 5 °C/Max. 80 °C

(90 °C briefly)

Ambient temperature

Min. 1 °C/Max. 60 °C

Thread standard

Rp - female thread,

G - male thread, ISO 228/1

Protection type

IP 44

Media

Water - Glycol mixture max. 50%

Ethanol mixture max. 30%

Electrical connection

Fixed wire

Signal connector

Single pole SPST

Cable specification

Dimension 3 x 0,75 mm2

Wire colours

Blue, brown, black

External insulation

PVC

Actuator

7 VA, 230 VAC, 50 Hz

Material valve body

Brass EN 12165 CW617N

Material external cover

Brass EN 12164 CW614N

Material slide/spindle

PPS Composite

Type approval certificate

CE (Actuator only)

Zone Valves

LK 525 MultiZone 2W

• Simple and flexible assembly with clip system

• Actuators are available as normally closed (NC) or

normally open (NO). Direction is displayed on the

actuator

Open

Closed

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Open

Closed Closed

WIRING DIAGRAM

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Closed

Valve and motor are available in closed or open position. (NC; Normally

Closed or NO; Normally Open)

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LK 525 MultiZone is a motorized 2-way zone valve for applica-

tion in heating systems in which the flow through one or more

zones is to be controlled. The zone valve has On/Off control and

is designed with a turning slide which allows it to withstand a

larger pressure difference and reduces the risk of it stalling

after a long intermission. On the upper surface of the actuator is

an indicator that shows which port is open or closed.

The zone valve must not be installed with the motor underneath

the valve unit.

In case of a power failure, the valve cone stays in its current po-

sition. When the power is switched off, the valve can be manual-

ly set. Remove the motor and turn the spindle to your selected

position. When the power is restored, turn the valve back to its

original position and reinstall the motor.

Please note that the motor can be installed in only one position.

10,0

1,0

0,1

Kvs (m3/h)

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0,1

1,0

10,0

100,0

Pressure Drop (kPa)

CAPACITY DIAGRAM

109

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(

)

TECHNICAL DATA

Angle of rotation

90°/360°

Leakage

< 0.1% of Kvs at 100 kPa

Operation time

12 seconds (90°)

Max. working pressure

1.0 MPa (10 bar)

Max. differential pressure

100 kPa (1 bar)

Working temperature

Min. 5 °C/Max. 80 °C

(90 °C briefly)

Ambient temperature

Min. 1 °C/Max. 60 °C

Thread standard

Rp - female thread,

G - male thread, ISO 228/1

Protection type

IP 44

Media

Water - Glycol mixture max. 50%

Ethanol mixture max. 30%

Electrical connection

Fixed wire

Signal connector

Single pole SPST

Cable specification

Dimension 3 x 0,75 mm2

Wire colours

Blue, brown, black

External insulation

PVC

Actuator

7 VA, 230 VAC, 50 Hz

Material valve body

Brass EN 12165 CW617N

Material external cover

Brass EN 12164 CW614N

Material slide/spindle

PPS Composite

Type approval certificate

CE (Actuator only)

Zone Valves

LK 525 MultiZone 2W

• Simple and flexible assembly with clip system

• Actuators are available as normally closed (NC) or

normally open (NO). Direction is displayed on the

actuator

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����

WIRING DIAGRAM

��

�

���� �����

LK 525 MultiZone is a motorized 2-way zone valve for applica-

tion in heating systems in which the flow through one or more

zones is to be controlled. The zone valve has On/Off control and

is designed with a turning slide which allows it to withstand a

larger pressure difference and reduces the risk of it stalling

after a long intermission. On the upper surface of the actuator is

an indicator that shows which port is open or closed.

The zone valve must not be installed with the motor underneath

the valve unit.

In case of a power failure, the valve cone stays in its current po-

sition. When the power is switched off, the valve can be manual-

ly set. Remove the motor and turn the spindle to your selected

position. When the power is restored, turn the valve back to its

original position and reinstall the motor.

Please note that the motor can be installed in only one position.

CAPACITY DIAGRAM

109

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