Thermal Safety Valve

LK 519 ThermoSafe

• Protect your boiler against overpressure

• Protective flexible hose for capillary tube

8.00

7.00

6.00

5.00

4.00

3.00

2.00

1.00

0.00

0.0

0.1 0.2

0.3 0.4 0.5 0.6 0.7 0.8

Pressure (MPa)

0.9 1.0

VALVE CHARACTERISTICS

LK 519 - Female thread

091777

F 3⁄4” / M 1⁄2”

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120

41

60

142

0.7

LK 519 ThermoSafe is a thermal safety valve for solid fuel

boilers with built-in water heaters or cooling coils. The safety

valve prevents the temperature of the boiler water from rising

above the boiling point. When temperature levels are too high

the valve opens to let cold water flow through water heater or

cooling coil, thus reducing the temperature of the boiler. LK

519 ThermoSafe has two, separately functioning, temperature

sensors for added safety.

LK 519 ThermoSafe safety valve is installed on the outlet pipe of

water heaters. The inlet pipe is recommended for cooling coils as

such an installation would protect the armature from impurities

caused by lime scale and other deposits.

The arrow on the valve housing indicates the direction of the

flow. The sensor pocket is screwed into the designated connec-

tion on the boiler. It is easier to install if the sensors are first

removed from the pocket.

175

TECHNICAL DATA

Max. working pressure

1.0 MPa (10 bar)

Working temperature

Min. 5 °C/Max. 110 °C

Opening temperature

97±2 °C

Thread standard

Rp - female thread,

G - male thread

Material valve body

Brass EN 12165 CW617N

Material sealing

Viton

Material spring

Stainless steel

Material pipe

Capillary pipe: Copper,

length 1300 mm, with insulation

Discharge capacity

Max. 6,5 m3/h at 0,6 MPa (6 bar)

Type approval certificate

CE

F

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o

w

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m

3

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h

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Article no.

Dim.

A mm

B mm

C mm

D mm

Weight kg