Liquid Level Switches

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Liquid level switches are used to detect and control the level of liquids in tanks, reservoirs & pipelines to monitor and maintain desired liquid levels. They work on the principle of...Read more

SQUARE D -

Close On Rise Liquid Level Switch

StyleModelItemHP @ 3 Phase - 230VBody MaterialConduit SizeHP @ 3 Phase - 240VMax. VoltageMountingNEMA RatingPrice (ex. VAT)
A9038CW33Alternator Tank Liquid Level Switch-Aluminum2.75"-600Side4€1,926.53
B9036DG2CLiquid Level Switch5Steel3.5"5575Vertical Open Tank1€116.25
C9037HW30Liquid Level Switch5Aluminum2.75"5600Horizontal4€931.60
D9037HG32Z20Liquid Level Switch5Steel3.5"5600Horizontal1€301.38
E9037HG33F3Z20Liquid Level Switch5Steel3.5"5600Horizontal1€297.48
E9037HG33Z20Liquid Level Switch5Steel3.5"5600Horizontal1€301.73
D9037HG35F3LZ20Liquid Level Switch5Steel3.5"5600Horizontal1€237.06
F9037HG36F3LZ20Liquid Level Switch5Steel3.5"5600Horizontal1€227.94
D9037HG36LZ20Liquid Level Switch5Steel3.5"5600Horizontal1€232.88
E9037HG36Z20Liquid Level Switch5Steel3.5"5600Horizontal1€322.68
E9037HG38Liquid Level Switch5Steel3.5"5600Horizontal1€311.78
C9037HW35Liquid Level Switch5Aluminum2.75"5600Horizontal4€899.13
C9037HW34Liquid Level Switch5Aluminum2.75"5600Horizontal4€1,000.13
E9037HG30Z20Liquid Level Switch5Steel3.5"5600Horizontal1€283.92
G9036DG2Liquid Level Switch5Steel3.5"5575Vertical Open Tank1€101.47
B9036DR31Liquid Level Switch5Steel2.75"5575Vertical Open Tank7, 9€538.28
B9036GG2Liquid Level Switch5Steel3.5"5575Vertical Open Tank1€170.27
B9036GW1Liquid Level Switch5Steel2.75"5575Vertical Open Tank4€924.17
H9037EG9Liquid Level Switch5Steel and Brass3.5"5575Vertical Open Tank1€376.15
E9037HG31Liquid Level Switch5Steel3.5"5600Horizontal1€302.24
E9037HG35Liquid Level Switch5Steel3.5"5600Horizontal1€292.50
E9037HG37Liquid Level Switch5Steel3.5"5600Horizontal1€283.29
D9037HG32LZ20Liquid Level Switch5Steel3.5"5600Horizontal1€222.29
I9037EW9Liquid Level Switch5Aluminum2.75"5600Vertical Open Tank4€1,124.39
J9036DW31Liquid Level Switch5Steel2.75"5575Vertical Open Tank4€615.86
MADISON -

Stainless Steel Single-Point Liquid Level Switches

StyleModelMountingBody MaterialConduit SizeOperating Temp. RangeOverall LengthStem LengthStem MaterialVA RatingPrice (ex. VAT)
AMS5010Horizontal316 Stainless Steel3/8-24"392 Degrees F Max.2.96"2.96"316 SS30€109.00
BM4190Horizontal304 Stainless Steel1"302 Degrees F Max.5.81"5.81"304 SS100€406.77
CM4190-HPHorizontal304 Stainless Steel1"302 Degrees F Max.3.98"3.98"304 SS100€351.82
DM4190-BUHorizontal304 Stainless Steel1"221 Degrees F Max.4.43"4.43"Buna N100€424.67
EM5010Horizontal316 Stainless Steel3/8-24"392 Degrees F Max.2.96"2.96"316 SS30€75.52
FM5920Horizontal316 Stainless Steel1/2" x 1/2"392 Degrees F Max.4.6"4.6"316 SS30€197.11
GMS5917Vertical316 Stainless Steel1/4"482 Degrees F Max.3.380"2.63"316 SS60€157.72
HMS7000VerticalPBT1/8"221 Degrees F Max.2.25"1.63"PBT30€35.14
IMS8000VerticalPolypropylene1/8"221 Degrees F Max.2.25"1.63"Polypropylene30€29.01
JMS8800VerticalPolypropylene1/4"221 Degrees F Max.3.380"2.63"Polypropylene60€94.95
KMS9000VerticalKynar1/8"221 Degrees F Max.2.25"1.63"Kynar30€53.26
LMSB5600Vertical316 Stainless Steel-221 Degrees F Max.3.89"2.5"316 SS60€268.33
MM5000Vertical316 Stainless Steel1/8"392 Degrees F Max.2.25"1.63"316 SS30€87.78
NM5600-PRVertical316 Stainless Steel1/4"392 Degrees F Max.3.380"2.63"316 SS100€138.57
MADISON -

Plastic Single-Point Liquid Level Switches

StyleModelMax. PressureBody MaterialConduit SizeMountingOperating Temp. RangeOverall LengthStem LengthStem MaterialPrice (ex. VAT)
AM900015 psiKynar1/8"Vertical221 Degrees F Max.2.25"1.63"Kynar€33.02
BM8800100 psiPolypropylene1/4"Vertical221 Degrees F Max.3.380"2.63"Polypropylene€88.07
CM8705100 psiPolypropylene1/2" x 1"Horizontal221 Degrees F Max.4"2.84"Polypropylene€45.11
DM8750100 psiPolypropylene1/2"Horizontal221 Degrees F Max.2.75"2.75"Polypropylene€18.83
EM8790100 psiPolypropylene5/8-11"Horizontal221 Degrees F Max.4.02"2.88"Polypropylene€18.27
FM7700100 psiPBT1/2" x 1/2"Horizontal149 Degrees F Max.2.75"2.75"PBT€20.21
GM8700-C100 psiPolypropylene1/2"Horizontal221 Degrees F Max.2.75"2.75"Polypropylene€21.37
HMSB8800100 psiPolypropylene-Vertical221 Degrees F Max.3.89"2.5"Polypropylene€156.91
IM9705100 psiKynar1/2" x 1"Horizontal221 Degrees F Max.4"2.84"Kynar€103.36
JM9700100 psiKynar1/2" x 1/2"Horizontal221 Degrees F Max.2.75"2.75"Kynar€35.46
KM8710100 psiPolypropylene1/4" x 1/2"Horizontal221 Degrees F Max.3.7"2.75"Polypropylene€52.21
LM7790100 psiPBT5/8-11"Horizontal266 Degrees F Max.4.02"2.84"PBT€28.63
MM7750100 psiPBT1/2"Horizontal266 Degrees F Max.2.75"2.75"PBT€28.80
NM7740100 psiPBT3/4-16" x 7/8-14"Horizontal266 Degrees F Max.4.3"3.31"PBT€30.70
OM7725100 psiPBT1/2"Horizontal266 Degrees F Max.2.75"2.75"PBT€27.34
PM5970100 psi316 Stainless Steel1/2"Horizontal392 Degrees F Max.3.19"3.19"316 SS€126.58
QM4010100 psiBrass3/8-20"Horizontal221 Degrees F Max.2.96"2.96"Brass€68.29
RM8700100 psiPolypropylene1/2" x 1/2"Horizontal221 Degrees F Max.2.75"2.75"Polypropylene€17.35
SM8000100 psiPolypropylene1/8"Vertical221 Degrees F Max.2.25"1.63"Polypropylene€18.72
TM8000B100 psiPolypropylene3/8-16"Vertical221 Degrees F Max.2.25"1.63"Polypropylene€48.73
UM4300150 psiBrass1/4"Vertical221 Degrees F Max.3.380"2.63"Brass€69.89
VM7000150 psiPBT1/8"Vertical221 Degrees F Max.2.25"1.63"PBT€22.34
WM5917200 psi316 Stainless Steel1/4"Vertical482 Degrees F Max.3.380"2.63"316 SS€108.52
XM5910300 psi316 Stainless Steel1/4" x 1/2"Horizontal392 Degrees F Max.4.6"4.6"316 SS€201.34
YM5900300 psi316 Stainless Steel1/2" x 1"Horizontal392 Degrees F Max.4.6"4.6"316 SS€210.53
LITTLE GIANT PUMPS -

Liquid Level Switches

StyleModelSizePrice (ex. VAT)
A95031510 ft.€205.97
RFQ
A95031415 ft.€176.53
RFQ
A95030720 ft.€228.82
RFQ
MADISON -

Selectable Multi-level Liquid Level Switch

StyleModelWidthBody MaterialElectrical ConnectionsFloat Dia.Float MaterialMax. PressureOperating Temp. RangeStem MaterialPrice (ex. VAT)
AML8888-Polypropylene23 ga. PTFE1.5"Polypropylene100 psi221 Degrees F Max.Polypropylene€517.26
BML444418"Polypropylene22 ga. PTFE1.25"Buna N150 psi221 Degrees F Max.Brass€459.78
CML555543.19"316 Stainless Steel22 ga. PTFE2.125"316 SS200 psi392 Degrees F Max.316 SS€721.91
SQUARE D -

Close On Rise Liquid 2-Level Switch

StyleModelConduit SizeFloat Dia.HeightMountingOperating Temp. RangeOverall LengthWidthPrice (ex. VAT)
A9038AG1N44-1/2", 4-3/4"7"4.5"Vertical Open Tank-22 Degrees to 220 Degrees F10.32"4.69"€413.40
B9038CG36N48-1/2", 8-3/4"2.5"5.94"Horizontal-22 Degrees to 220 Degrees F17.81"6.84"€1,023.84
C9038CG36N4LZ208-1/2", 8-3/4"2.5"5.94"Horizontal250 Degrees F Max6.840"6.84"€885.62
MADISON -

Open On Rise Multi-level Liquid Level Switch

StyleModelStem LengthBody MaterialConduit SizeStem MaterialVA RatingFloat Dia.Float MaterialMax. PressurePrice (ex. VAT)
AM80856.75"Polypropylene1/4"Polypropylene301"Polypropylene100 psi€106.08
BM56057.25"316 Stainless Steel1/2"316 SS602.13"316 SS200 psi€292.70
MADISON -

Close On Rise Liquid Level Switch

StyleModelMountingBody MaterialConduit SizeOperating Temp. RangeOverall LengthStem LengthStem MaterialVA RatingPrice (ex. VAT)
AM3827-2NOHorizontal316 Stainless Steel1/2"392 Degrees F Max.5.25"5.12"316 SS30€157.24
AM3827-3NOHorizontal316 Stainless Steel1/8"392 Degrees F Max.5.25"5.12"316 SS30€209.20
BM3326-NOVerticalPolypropylene3/8-16"221 Degrees F Max.1.85"1.25"Polypropylene15€32.52
CM3326-NPT-NOVerticalPolypropylene1/8"221 Degrees F Max.1.85"1.25"Polypropylene15€49.65
DM8000-NOVerticalPolypropylene1/8"221 Degrees F Max.2.25"1.63"Polypropylene30€22.96
MADISON -

Close On Rise Drum Liquid Level Switch

StyleModelBody MaterialFloat MaterialMax. PressureOperating Temp. RangeStem MaterialPrice (ex. VAT)
AM4169-1316 Stainless Steel316 SS250 psi302 Degrees F Max.316 SS€233.80
BM4168-1BrassBuna N150 psi221 Degrees F Max.Brass€180.39
MADISON -

Open On Rise Ultra Low Level Liquid Switch

StyleModelBody MaterialElectrical ConnectionsFloat MaterialStem MaterialPrice (ex. VAT)
AM4400-ULL-NC316 Stainless Steel22 ga. PTFE Coated 24" LeadsBuna N316 SS€102.44
BM8020-ULL-NC316 Stainless Steel22 ga. PTFE Coated 24" LeadsPolypropylene316 SS€78.26
CM9000-ULL-NCKynar22 ga. PTFE Coated 24" LeadsKynarKynar€77.63
DM8000-ULL-NCPolypropylene22 ga. MTW Coated 24" LeadsPolypropylenePolypropylene€70.17
MADISON -

Open On Rise Drum Liquid Level Switch

StyleModelBody MaterialFloat MaterialMax. PressureOperating Temp. RangeStem MaterialPrice (ex. VAT)
AM4169-2316 Stainless Steel316 SS250 psi302 Degrees F Max.316 SS€279.37
BM4168-2BrassBuna N150 psi221 Degrees F Max.Brass€221.00
MADISON -

Selectable Drum Liquid Level Switch

StyleModelBody MaterialFloat MaterialMax. PressureOperating Temp. RangeStem MaterialPrice (ex. VAT)
AM4169-3316 Stainless Steel316 SS250 psi302 Degrees F Max.316 SS€396.90
BM4168-3BrassBuna N150 psi221 Degrees F Max.Brass€262.66
MADISON -

Close On Rise Ultra Low Level Liquid Switch

StyleModelBody MaterialElectrical ConnectionsFloat MaterialStem MaterialPrice (ex. VAT)
AM4400-ULL-NO316 Stainless Steel22 ga. PTFE Coated 24" LeadsBuna N316 SS€87.68
AM4400-PBT-ULL-NO316 Stainless Steel22 ga. PTFE Coated 24" LeadsPBT316 SS€67.82
BM8020-ULL-NO316 Stainless Steel22 ga. PTFE Coated 24" LeadsPolypropylene316 SS€78.53
CM4500-ULL-NOBrass22 ga. PTFE Coated 24" LeadsBuna NBrass€90.79
DM9000-ULL-NOKynar22 ga. PTFE Coated 24" LeadsKynarKynar€91.72
EM7000-ULL-NOPBT22 ga. PTFE Coated 24" LeadsBuna NPBT€88.34
EM7000-PBT-ULL-NOPBT22 ga. PTFE Coated 24" LeadsPBTPBT€69.47
FM8000-ULL-NOPolypropylene22 ga. MTW Coated 24" LeadsPolypropylenePolypropylene€66.26
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Close On Rise Alternator Liquid Level Switch

StyleModelHP @ 3 Phase - 240VBody MaterialConduit SizeMax. VoltageMountingNEMA RatingOperating Temp. RangeOverall LengthPrice (ex. VAT)
A9038DW85Aluminum2.75"600Vertical4-22 Degrees to 220 Degrees F7.38"€2,206.02
B9038AG1N55Steel4-1/2", 4-3/4"600Vertical Open Tank1-22 Degrees to 220 Degrees F10.32"€524.91
C9038DR85Aluminum2.75"600Vertical7, 9-22 Degrees to 220 Degrees F7.38"€2,735.91
D9038CW315Aluminum2.75"600Horizontal4-22 Degrees to 220 Degrees F17.81"€1,785.62
E9038CG36Z205Steel8-1/2", 8-3/4"600Horizontal1250 Degrees F Max17.81"€795.47
F9038CG33F35Steel8-1/2", 8-3/4"600Horizontal1-22 Degrees to 220 Degrees F17.81"€789.05
G9038CG32Z205Steel8-1/2", 8-3/4"600Horizontal1250 Degrees F Max17.81"€756.92
G9038CG32N55Steel8-1/2", 8-3/4"600Horizontal1-22 Degrees to 220 Degrees F17.81"€1,060.20
F9038CG31F35Steel8-1/2", 8-3/4"600Horizontal1-22 Degrees to 220 Degrees F17.81"€741.14
H9038AW1N55Aluminum2.75"600Vertical Open Tank4-22 Degrees to 220 Degrees F11.88"€1,328.60
H9038AR15Aluminum2.75"600Vertical Open Tank7, 9-22 Degrees to 220 Degrees F11.88"€1,095.96
B9038AG1S65Steel4-1/2", 4-3/4"600Vertical Open Tank1-22 Degrees to 220 Degrees F10.32"€362.18
B9038AG1C5Steel4-1/2", 4-3/4"600Vertical Open Tank1-22 Degrees to 220 Degrees F10.32"€383.07
H9038AW15Aluminum2.75"600Vertical Open Tank4-22 Degrees to 220 Degrees F11.8"€1,120.95
G9038CG34Z205Steel8-1/2", 8-3/4"600Horizontal1250 Degrees F Max17.81"€795.82
G9038CG345Steel8-1/2", 8-3/4"600Horizontal1-22 Degrees to 220 Degrees F17.81"€804.92
G9038CG33Z205Steel8-1/2", 8-3/4"600Horizontal1250 Degrees F Max17.81"€754.73
I9038DG95Steel8-1/2", 8-3/4"575Vertical Open Tank1-22 Degrees to 200 Degrees F6.840"€1,082.68
I9038DG85Steel8-1/2", 8-3/4"600Vertical Open Tank1-22 Degrees to 220 Degrees F6.840"€1,002.76
I9038DG75Steel8-1/2", 8-3/4"600Vertical Open Tank1-22 Degrees to 220 Degrees F6.840"€1,026.07
J9038CW325Steel2.75"575Vertical Open Tank4-22 Degrees to 200 Degrees F17.81"€1,651.78
E9038CG365Steel8-1/2", 8-3/4"600Horizontal1-22 Degrees to 220 Degrees F13.84"€848.96
G9038CG335Steel8-1/2", 8-3/4"600Horizontal1-22 Degrees to 220 Degrees F13.84"€766.24
G9038CG325Steel8-1/2", 8-3/4"600Horizontal1-22 Degrees to 220 Degrees F13.84"€781.62
G9038CG315Steel8-1/2", 8-3/4"600Horizontal1-22 Degrees to 220 Degrees F13.84"€759.19
SQUARE D -

Open On Rise Liquid Level Switch

StyleModelStem LengthConduit SizeFloat Dia.VA RatingWidthHeightMax. VoltageMountingPrice (ex. VAT)
A9036DG2R-3.5"7"460 VAC2.53"4.27"575Vertical Open Tank€90.59
A9036DW31R-2.75"7"460 VAC2.53"4.27"575Vertical Open Tank€562.81
A9036GG2R-3.5"7"460VCA3.43"5.56"575Vertical Open Tank€159.90
A9036DG2CR-1/2", 3/4"7"460 VAC2.55"4.5"600Vertical Open Tank€119.28
A9036GW1R-2.75"7"460 VAC3.75"8.25"600Vertical Open Tank€1,269.86
B9037EG8R1F1-3.5"3.63"-7.6"7.6"600Vertical Open Tank€495.26
C9037HG34R3.89"3.5"2.58"-2.56"4.44"600Horizontal€308.56
C9037HG30R4.37"3.5"2.58"-2.88"5.98"600Horizontal€275.49
C9037HG31R4.37"3.5"2.58"-2.88"5.98"600Horizontal€300.46
C9037HG33R5.07"3.5"2.58"-11.3"5.98"600Horizontal€274.79
MADISON -

Selectable Liquid Level Switch

StyleModelMountingBody MaterialConduit SizeOperating Temp. RangeOverall LengthStem LengthStem MaterialVA RatingPrice (ex. VAT)
AM3326-SMHorizontalPolypropylene3/8-16"221 Degrees F Max.1.85"1.24"Polypropylene15€31.68
BM8790-14/4184HorizontalPolypropylene5/8-11"221 Degrees F Max.4.02"3.31"Polypropylene30€38.34
CM4065Horizontal304 Stainless Steel1.5"257 Degrees F Max.5.5"5.5"304 SS20€807.78
DM3727HorizontalStainless Steel1/2" x 1/4"392 Degrees F Max.5"5"Stainless Steel30€169.09
EMS8010HorizontalStainless Steel1/8"221 Degrees F Max.2.96"2.96"Stainless Steel30€86.69
FM5600Vertical316 Stainless Steel1/4"392 Degrees F Max.3.380"2.63"316 SS60€93.79
MADISON -

Open On Rise Liquid Level Switch

StyleModelMountingBody MaterialConduit SizeOperating Temp. RangeOverall LengthStem LengthStem MaterialVA RatingPrice (ex. VAT)
AM3827-2Horizontal316 Stainless Steel1/2"392 Degrees F Max.5.770"5.77"316 SS30€150.19
AM3827-3Horizontal316 Stainless Steel1/8"392 Degrees F Max.5.770"5.77"316 SS30€176.16
BM3782VerticalBrass/PBT-221 Degrees F Max.4.06"4.06"Brass30€166.73
CM8000-CVerticalPolypropylene and PVC3/4"140 Degrees F Max.1.99"1.55"PVC30€34.32
DM3326VerticalPolypropylene3/8-16"221 Degrees F Max.1.85"1.25"Polypropylene15€32.34
EM3326-NPTVerticalPolypropylene1/8"221 Degrees F Max.1.85"1.25"Polypropylene15€50.73
FM4035VerticalStainless Steel1/8"221 Degrees F Max.1.41"0.75"Stainless Steel15€62.53
GM8800-PRVerticalPolypropylene1/4"221 Degrees F Max.3.380"3.38"Polypropylene100€158.10
MADISON -

Adjustable-Level Liquid Level Switches

StyleModelStem LengthBody MaterialFloat Dia.Stem MaterialWidthFloat MaterialHeightMax. PressurePrice (ex. VAT)
AM4302-7807-110.5"Brass1.25"Brass7"Buna N12"150 psi€174.92
BM5602-7808-110.5"316 Stainless Steel2.13"316 SS1.25"316 SS12"200 psi€436.18
CM4302-7807-670.5"Brass1.25"Brass7"Buna N72"150 psi€139.78
RFQ
DM5602-7808-670.5"316 Stainless Steel2.13"316 SS1.25"316 SS72"200 psi€474.97
RFQ
ENDRESS HAUSER -

Liquid Level Switch, 316L Stainless Steel, Peek Wetted Parts

ModelItemPrice (ex. VAT)
FTW23-CA4MW5JCV8BFY€439.09
See Details
PROSENSE -

Float Liquid Level Switch, Vertical Top Mount, 0.75 Inch Insertion Length

ModelItemPrice (ex. VAT)
FLS-VS-500CV8BFL€57.75
See Details
ENDRESS HAUSER -

Liquid Level Switch, 316L Stainless Steel, Peek Wetted Parts

ModelItemPrice (ex. VAT)
FTW23-CA7NW5JCV8BGH€561.27
See Details
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Features

Madison Single-Point Liquid Level Switches

  • These switches are made of polypropylene / 304 stainless steel to ensure long-lasting performance and resistance to corrosion.
  • They have SPST (single pole, single throw) configuration for a simple and reliable circuit configuration.
  • They can handle pressures up to 900 psi and temperatures up to 300 degrees F.

Square D Liquid 2-Level Switches

  • They can operate effectively within a temperature range of -22 to 220 degrees F.
  • These switches operate on a 'Close On Rise' function, meaning that they close the electrical circuit when the liquid rises to the desired level.
  • They include a stainless steel float, ensuring durability and resistance to corrosion, even in harsh liquid environments.
  • These level switches have the float positioned below the liquid level, enabling them to rise and trigger when the liquid reaches the desired level.

Parker Level Switches

  • They can withstand temperatures ranging from 0 to 60 degrees C.
  • These switches are extremely sensitive and have built-in springs that can be adjusted to four different levels.

Working Mechanism

  • Mount the level switch at the desired level in the container or tank.
  • Make sure the float can move up and down as the liquid level changes.
  • As the liquid level rises, the float will also rise, activating the switch mechanism.
  • The switch can be connected to a control system or pump to perform the desired action, such as stopping or starting a process.

Frequently Asked Questions

What is the difference between a normally open (NO) and normally closed (NC) liquid level switch?

A normally open (NO) liquid level switch stays in the open state when the liquid level is below the set threshold and closes the circuit when the liquid level rises to the desired level. A normally closed (NC) switch operates oppositely, being in a closed state when the liquid level is below the threshold and opening the circuit when the liquid level reaches the set level.

Why do some people use multiple liquid level switches in the same tank?

Utilising multiple liquid level switches in the same tank provides redundancy and more precise level control. They can be wired in parallel or series, depending on the desired functionality.

How do I troubleshoot a liquid level switch that is not functioning properly?

Troubleshooting measures include checking electrical connections, verifying power supply, inspecting for damage or debris affecting switch operation and ensuring proper switch calibration.

We are here to help!

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