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LF42 Pressure Switch
Product Details

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

Model

LF42H

LF42L

Medium

water

water

Pressure set range

cut off pressure:2.5bar±0.5bar
cut in pressure: 1.5bar±0.5bar

cut in pressure: ≤0.1bar
cut off pressure: ≥0.2bar

Proof pressure

18bar

18bar

Durability

>40,000 times

>40,000 times

Working temperature

5-45℃

5-45℃

Switch type

Microswitch , nomal close

Microswitch , nomal open

Electrical rating

Voltage:250V AC Current:16A

Voltage:250V AC Current:16A

Terminal

4.8*0.8 mm blade

4.8*0.8mm blade

Connector

6mm quick connector

6mm quick connector



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