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Air Compressor Pressure Switch LF10

LF10 air compressor pressure switch control valve is an instrument that integrates mechanical pressure sensing and precise open/close in a high-pressure application. It has the characteristics of simple operation, cost-effective, stable, and0.1 million serving cycles.

26 Amp LEFOO LF10 28-175 PSI air compressor, pressure switch, control valve with a 4 port connection manifold. The switch listed is a universal replacement pressure switch that replaces brands such as Furnas, Square-D, and more. This switch is equipped with an unloader valve, a four-port mounting manifold, and an on/off lever. This is similar to the regular 4 port pressure switch, but this switch is equipped with heavy-duty 26 Amp contacts to provide a longer-lasting switch in demanding applications. The four-port manifold gives you the option to mount in it any direction and also has the option to add a relief valve, gauge, or multiple air outlet ports. These Ports can also be plugged if not needed which is what makes this switch a great universal replacement pressure switch. The unloader equipped on this switch is used to unload the air pressure off the head of the compressor when the compressor shuts off, this way when it starts there is no pressure on the piston and the compressor is able to start load free. This valve usually has a 1/4" plastic or copper line that runs to the check valve or the head of the compressor. If your compressor does not have an unloader line then this valve can be left not hooked up and the pressure switch will still function properly. This switch can be used on a single-stage or two-stage compressor as long as the amperage is less than 26 amps on 120 volt or 240 volts, however, if this is being used with a magnetic starter on a larger compressor the amperage does not matter, in this case, it is just used to turn the starter on & off at the set pressure. 


Specification of Air Compressor Pressure Switch

MODEL

Min ON (Cut-In) PSI

Max Off

(Cut-Out) PSI

Differential

PSI

Factory Setting PSI

Electrical Rating

Pipe Fittings

Contact Arrangement

120VAC

240VAC

LF10-1H1

25

100

20-30

50-80

20A

12A

NPT 1/4 Male or Female NPT

NC

LF10-1H2

35

150

30-40

85-115

20A

12A

1/4" Male or Female NPT

NC

LF10-1H3

50

175

35-55

110-150

20A

12A

1/4" Male or Female NPT

NC

LF10-4H1

25

100

20-30

50-80

20A

12A

1/4" Female NPT (4 Port)

NC

LF10-4H2

35

150

30-40

85-115

20A

12A

1/4" Female NPT (4 Port)

NC

LF10-4H3

50

175

35-55

110-150

20A

12A

1/4" Female NPT (4 Port)

NC



MODELMin ON (Cut-In) PSIMax OffDifferential PSIFactory Setting PSIElectrical RatingPipe FittingsContact Arrangement


(Cut-Out) PSI

120VAC240VAC

LF10A-1H12510020-3050-8026A26ANPT 1/4 Male or Female NPTNC
LF10A-1H23515030-4085-11526A26A1/4" Male or Female NPTNC
LF10A-1H35017535-55110-15026A26A1/4" Male or Female NPTNC
LF10A-1H47020040-55130-17526A26A1/4" Male or Female NPTNC
LF10A-4H12510020-3050-8026A26A1/4" Female NPT (4 Port)NC
LF10A-4H23515030-4085-11526A26A1/4" Female NPT (4 Port)NC
LF10A-4H35017535-55110-15026A26A1/4" Female NPT (4 Port)NC
LF10A-4H47020040-55130-17526A26A1/4" Female NPT (4 Port)NC


Features of Air Compressor Pressure Switch

Customize working parameters

High precision, vibration resistance, 0.1 million work cycle

Automatic pressure valve control

Adjustable pressure settings

Compact structureVent valveSingal Port4 ports
LEFOO Features of Air Compressor Pressure Switch SF10





Application of Pressure Switch for Air Compressor

Automatic Control for Air Compressor, Vacuum pump, Industrial water pump.


For example, This switch is customized and comes pre-set to turn the compressor on at 140 PSI and shut off at 175 PSI. This can be adjusted to any pressure within the factory minimum and maximum set points listed below. We have a picture showing the diagram for pressure adjustment. Specifications:• PRESET 140-175 PSI• MINIMUM ON: 50 PSI• MAXIMUM OFF PRESSURE: 175 PSI• PRESSURE DIFFERENTIAL: 35-55 PSI• ¼" COMPRESSION UNLOADER VALVE CONNECTION• ¼" FEMALE NPT TANK CONNECTION WITH 3 EXTRA 1/4" FEMALE NTP PORTS.• MAX AMPS, 26 AMPS AT 120VOLT / 26 AMP AT 240 VOLTDimensions:• 4-3/4" Long (Farthest Point)• 2-5/8" Wide (Farthest Point)• 3-3/4" (Bottom of Manifold to Top of Lid)

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