Water dispensers high and low pressure switch

Pressure set range

Durability

Working temperature

Electrical rating

Terminal

water

5~45℃

Microswitch , nomal close

4.8*0.8 blade

Connector

Proof pressure 18bar

＞40000 times

Switch type Microswitch , nomal open

5~45℃

4.8*0.8 blade

18bar

＞40000 times

water

24

www.lefoo.com

Model

Media

Dimension in:mm

25

Full Load

Locked Roter

Model Range(bar)

-0.5

-0.5

1

-0.5

20A 10A

72A

8A

64A72A

Max Operating Pressure(bar)Min Max

2

3

10

6

6

16.5

16.5

16.5

Electrical Function

Differential(bar)Min Max

Factory Setting(bar)OFF ON

3

5

5

8

8

16

20

30

30

30

-0.5

0.2

0.35

1

0.6

1

2

3

Fixed 3 to 5bar

0.7

1.5

3

4

4

5

10

1

2

6

3

0.5

1

5

2

Manual Reset

10

16

20

20

20

8

13

15

15~17

3

16.5

16.5

35

35

35

35

35

-0.2 7.5

2 14

8

8

42

32

0.7 4

1 4

2 6

4 10

3 2

10 8

20 17

30 25

20

20

35

46.5

Pressure switch for refrigeration system

Conversion:1kgf/cm²=14.2psi 1psi=68.95mbar

Manual Reset

Contact Function

Arrow means the direction of pressure increasing,M means hand reset

1

5

31

3

5M1

2

41

2

4M

Temperature

Dimension in:mm

Lf42 series pressure switch is used in water supply

pressure protection of water inlet. This series include two

models LF42H(high pressure protection) and LF42L(low

pressure protection). LF42H is the high pressure

protection switch model. If the pressure of the pressure

vessel transferred reaches the setting value while the

vessel is full filled with water, the switch will cut off the

circuit to make the pump stop. So the pump will not be

damaged. LF42L is the low pressure protection switch. If

the pressure of water inlet lower than set value, RO will

not work and keep dewatering, then the switch will cut

off the circuit to make the pump stop. It can prevent the

booster pump still working without water which may

lead to the damage of the circuit. If the pressure of the

water inlet returns to the lowest set volume, the pump

will work again. Specification

LF42H LF42L

cut off pressure:2.5bar±0.5bar

cut in pressure: 1.5bar±0.5bar

Voltage:250V AC Current:16A

A quarter fast interface

cut off pressure:≤0.1 bar

cut in pressure: ≥0.2 bar

Voltage:250V AC Current:16A

A quarter fast interface

Conversion:1bar=14.5psi 1MPa=10bar

Rated Amps.(A)\Rated Voltage(V)

Specification

Reset Differential≤4bar

Reset Differential≤1bar

Los interruptores de presión de la serie ITA55 se utilizan para controlar la presión del compresor en el sistema de refrigerante, también disponible en aire o fluido de agua. Esta serie tiene un rendimiento bastante estable con estructura interna de microinterruptor. Se proporcionan soportes de montaje estándar

ITA5502ITA5503

ITA5506ITA5506MITA5508ITA5510ITA5514ITA5516ITA5520ITA5530ITA5530MITA5530DITA5532ITA5542

www.itahydraulic.com

ITA55

Water dispensers high and low pressure switch

Pressure set range

Durability

Working temperature

Electrical rating

Terminal

water

5~45℃

Microswitch , nomal close

4.8*0.8 blade

Connector

Proof pressure 18bar

＞40000 times

Switch type Microswitch , nomal open

5~45℃

4.8*0.8 blade

18bar

＞40000 times

water

24

www.lefoo.com

Model

Media

Dimension in:mm

25

Full Load

Locked Roter

Model Range(bar)

-0.5

-0.5

1

-0.5

20A 10A

72A

8A

64A72A

Max Operating Pressure(bar)Min Max

2

3

10

6

6

16.5

16.5

16.5

Electrical Function

Differential(bar)Min Max

Factory Setting(bar)OFF ON

3

5

5

8

8

16

20

30

30

30

-0.5

0.2

0.35

1

0.6

1

2

3

Fixed 3 to 5bar

0.7

1.5

3

4

4

5

10

1

2

6

3

0.5

1

5

2

Manual Reset

10

16

20

20

20

8

13

15

15~17

3

16.5

16.5

35

35

35

35

35

-0.2 7.5

2 14

8

8

42

32

0.7 4

1 4

2 6

4 10

3 2

10 8

20 17

30 25

20

20

35

46.5

Pressure switch for refrigeration system

Conversion:1kgf/cm²=14.2psi 1psi=68.95mbar

Manual Reset

Contact Function

Arrow means the direction of pressure increasing,M means hand reset

1

5

31

3

5M1

2

41

2

4M

Temperature

Dimension in:mm

Lf42 series pressure switch is used in water supply

pressure protection of water inlet. This series include two

models LF42H(high pressure protection) and LF42L(low

pressure protection). LF42H is the high pressure

protection switch model. If the pressure of the pressure

vessel transferred reaches the setting value while the

vessel is full filled with water, the switch will cut off the

circuit to make the pump stop. So the pump will not be

damaged. LF42L is the low pressure protection switch. If

the pressure of water inlet lower than set value, RO will

not work and keep dewatering, then the switch will cut

off the circuit to make the pump stop. It can prevent the

booster pump still working without water which may

lead to the damage of the circuit. If the pressure of the

water inlet returns to the lowest set volume, the pump

will work again. Specification

LF42H LF42L

cut off pressure:2.5bar±0.5bar

cut in pressure: 1.5bar±0.5bar

Voltage:250V AC Current:16A

A quarter fast interface

cut off pressure:≤0.1 bar

cut in pressure: ≥0.2 bar

Voltage:250V AC Current:16A

A quarter fast interface

Conversion:1bar=14.5psi 1MPa=10bar

Rated Amps.(A)\Rated Voltage(V)

Specification

Reset Differential≤4bar

Reset Differential≤1bar

Los interruptores de presión de la serie ITA55 se utilizan para controlar la presión del compresor en el sistema de refrigerante, también disponible en aire o fluido de agua. Esta serie tiene un rendimiento bastante estable con estructura interna de microinterruptor. Se proporcionan soportes de montaje estándar

ITA5502ITA5503

ITA5506ITA5506MITA5508ITA5510ITA5514ITA5516ITA5520ITA5530ITA5530MITA5530DITA5532ITA5542

www.itahydraulic.com

26

Pressure switch for refrigeration system

20A 10A

72A

8A

64A72A

B C- D

4A

Electrical Function

Model Range(bar)Min Max

Differential bar( )Min Max

Factory Setting(bar)OFF ON

Max Operating Pressure(bar)

PressSide

Arrow means the direction of pressure increasing,M means hand reset

D

B

CA

L

H

Contact Function

D

B

CA

L

H

M

D

B

CA

L

H

MM

Dimension in:mm

27

Oil differential pressure switch

www.lefoo.com

SPDT

COM1

5 NC

3 NO 1 Common contact

1-3 When pressure increase,it’s closed

1-5 When pressure decrease,it’s closed

↑ Pressure rise’s way

Notes:1)When install the pressure switch's connection tube,don’t wrong side of high

pressure & low pressure.

2)When install the pressure switch’s connection tube,the screw with the

connection must be use two10" spanner to do it colse.

Contact Function

10ANon Inductive Current- 10A

0.5

0.5

1

0.5

20A

15A 8A

72A

8A

64A72A

2

3.5

6

3.5

6

0.5

1

1

1

1

16.5

16.5

33

33

16.51

Full Load

Locked Roter

Electrical Function

Model Differential Adjust range bar ( ) Factory Setting(bar)Max Operating Pressure(bar)Min Max

Temperature

Dimension in:mm

Full Load

Locked Roter

Rated Amps.(A)\Rated Voltage(V)

Temperature

Specification

-0.2

8

8

-0.2

7.5

32

32

7.5

32

20

35

358

0.7

0.7

4

4

4

20

20

4

2

15

2

Manual Reset20

20

35

-0.2 7.5 Fixed 4 3 20

Low Side

High Side

Fixed 4

Fixed 4

Manual Reset

Manual Reset

Low Side

High Side

Low Side

High Side

Fixed 4

LF5D series are pressure differential switches which

normally used in water or oil fluid to control the pressure

differential of the outlet tube and inlet tube. Bellowing is

one of the typical application: install the valve in the

pipeline which near the water(oil) pump, when the

pressure differential of the two sides of the system

increasing or decreasing and exceed the setting value,

the valve will open. Then the system pressure differential

will reach to the normal circulate. Both two sides of LF5D

series have a high sensitive components, the switch will

act to control the system of the equipment such as

motor driven valve while the pressure differential

changes.

Specification

Rated Amps.(A)\Rated Voltage(V)

LF5D2

LF5D4

LF5D6

LF5D6H

LF5D4H

Note:Default connection is M12x1.25, if need British connection such as 7/16-20UNF,

please add 'E' in the end of the model

Normally,use English system is screw thread is 7/16-20UNF

Los interruptores de presión de la serie ITA55 se utilizan para controlar la presión del compresor en el sistema de refrigerante, también disponible en aire o fluido de agua. Esta serie tiene un rendimiento bastante estable con estructura in terna de microinterruptor. Se proporcionan soportes de montaje estándar

ITA5832

ITA5832HM

ITA5832HLM

www.itahydraulic.com

ITA58

www.lefoo.com

26

Pressure switch for refrigeration system

20A 10A

72A

8A

64A72A

B C- D

4A

Electrical Function

Model Range(bar)Min Max

Differential bar( )Min Max

Factory Setting(bar)OFF ON

Max Operating Pressure(bar)

PressSide

Arrow means the direction of pressure increasing,M means hand reset

D

B

CA

L

H

Contact Function

D

B

CA

L

H

M

D

B

CA

L

H

MM

Dimension in:mm

27

Oil differential pressure switch

SPDT

COM1

5 NC

3 NO 1 Common contact

1-3 When pressure increase,it’s closed

1-5 When pressure decrease,it’s closed

↑ Pressure rise’s way

Notes:1)When install the pressure switch's connection tube,don’t wrong side of high

pressure & low pressure.

2)When install the pressure switch’s connection tube,the screw with the

connection must be use two10" spanner to do it colse.

Contact Function

10ANon Inductive Current- 10A

0.5

0.5

1

0.5

20A

15A 8A

72A

8A

64A72A

2

3.5

6

3.5

6

0.5

1

1

1

1

16.5

16.5

33

33

16.51

Full Load

Locked Roter

Electrical Function

Model Differential Adjust range bar ( ) Factory Setting(bar)Max Operating Pressure(bar)Min Max

Temperature

Dimension in:mm

LF55 Series pressure switches are used to control the

pressure of compressor in refrigerant system, also

available in air or water fluid. This series have quite

stable performance with internal micro-switch structure.

Standard mounting bracket are provided

Full Load

Locked Roter

Rated Amps.(A)\Rated Voltage(V)

Temperature

Specification

LF5832-0.2

8

8

LF5832HM-0.2

7.5

32

32

7.5

32

20

35

358

0.7

0.7

4

4

4

20

20

4

2

15

2

Manual Reset20

20

35LF5832HLM

-0.2 7.5 Fixed 4 3 20

Low Side

High Side

Fixed 4

Fixed 4

Manual Reset

Manual Reset

Low Side

High Side

Low Side

High Side

Fixed 4

Specification

Rated Amps.(A)\Rated Voltage(V)

Note:Default connection is M12x1.25, if need British connection such as 7/16-20UNF,

please add 'E' in the end of the model

Normally,use English system is screw thread is 7/16-20UNF

La serie ITA5D son interruptores diferenciales de presión que normalmente se usan en agua o fluido de aceite para controlar la presión diferencial del tubo de salida y el tubo de entrada. El siguiente es una de las aplicaciones típicas: instale la válvula en la tubería que está cerca de la bomba de agua (aceite), cuando el diferencial de presión de los dos lados del sistema aumenta o disminuye y excede el valor de ajuste, la válvula se abrirá. Entonces el diferencial de presión del sistema alcanzará la circulación normal. Ambos lados de la serie LF5D tienen componentes altamente sensibles, el interruptor actuará para controlar el sistema del equipo, como la válvula accionada por motor, mientras que el diferencial de presión cambia.

ITA5D2ITA5D4ITA5D6ITA5D6HITA5D4H

www.itahydraulic.com

ITA5D