Level Switches

Industrial liquid level float switches and level sensors used for monitoring and controlling fluid levels in tanks, reservoirs, and pump systems.

Level switches are essential devices for monitoring and controlling liquid and solid material levels in industrial processes. They provide point-level detection within tanks, silos, pipelines, and other containers, allowing systems to trigger alarms, start or stop pumps, or prevent overfill and dry-run conditions. RSP Supply offers a broad selection of level switches designed to deliver consistent and accurate performance across a wide range of applications.

For liquid level detection, float switches remain a reliable and widely used solution, operating through simple mechanical movement as liquid levels rise and fall. In more demanding environments, such as applications involving large tanks, high set points, vibration, extreme temperatures, or corrosive materials, non-mechanical electronic level switches are often preferred. These designs eliminate moving parts, improving long-term reliability while maintaining precise detection.

Level switches are also commonly used in hazardous or remote locations, where dependable monitoring is critical. Available technologies include float switches, tuning fork level switches, optical level switches, and rotating paddle switches for bulk solids such as powders or grains. Many models are constructed with stainless steel housings to withstand high pressure, temperature extremes, and corrosive process media. Compact, rugged, and versatile, level switches provide dependable monitoring for liquids and solids in demanding industrial environments.

Found 159 items
Normally In Stock
Dwyer L6EPB-B-D-3-A Flotect® Liquid Level Switch
Free U.S Ground shipping
$567.52
$472.93
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Dwyer OLS-11 Optitrol® Optical Level Switch
Free U.S Ground shipping
$137.10
$114.25
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Dwyer L6EPS-S-S-3-A Flotect® Liquid Level Switch
Free U.S Ground shipping
$605.27
$504.39
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Dwyer F6-SS Level Switches – Vertical
Free U.S Ground shipping
$73.66
$61.38
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Dwyer F7-BB Level Switches – Vertical
Free U.S Ground shipping
$194.34
$161.95
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Dwyer F7-BT Level Switches – Vertical
Free U.S Ground shipping
$48.41
$40.34
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Dwyer F7-LL Level Switches – Vertical
Free U.S Ground shipping
$205.22
$171.02
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Dwyer F7-LPP Level Switches – Vertical
Free U.S Ground shipping
$110.68
$92.23
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Dwyer F7-MPP Level Switches – Vertical
Free U.S Ground shipping
$113.86
$94.88
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Dwyer F7-MPP-NO Level Switches – Vertical
Free U.S Ground shipping
$113.86
$94.88
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Dwyer F7-PP Level Switches – Vertical
Free U.S Ground shipping
$44.12
$36.77
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Dwyer F7-PVC Level Switches – Vertical
Free U.S Ground shipping
$271.70
$226.42
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Dwyer F7-SB Level Switches – Vertical
Free U.S Ground shipping
$85.97
$71.64
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Dwyer F7-SS2 Level Switches – Vertical
Free U.S Ground shipping
$89.98
$74.98
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Dwyer F7-T1 Level Switches – Vertical
Free U.S Ground shipping
$1578.20
$1315.17
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Dwyer F6-HPS-11 Level Switches - Horizontal/Specialty
Free U.S Ground shipping
$40.27
$33.56
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Dwyer F6-HPS-22 Level Switches - Horizontal/Specialty
Free U.S Ground shipping
$47.50
$39.58
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Dwyer F6-HPS-31 Level Switches - Horizontal/Specialty
Free U.S Ground shipping
$40.27
$33.56
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Dwyer F6-MHS Level Switches - Horizontal/Specialty
Free U.S Ground shipping
$80.24
$66.87
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Dwyer F6-MHS2 Level Switches - Horizontal/Specialty
Free U.S Ground shipping
$80.24
$66.87
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Dwyer F7-EBNC Level Switches - Horizontal/Specialty
Free U.S Ground shipping
$754.46
$628.72
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Dwyer F7-HPS-21 Level Switches - Horizontal/Specialty
Free U.S Ground shipping
$134.40
$112.00
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Dwyer F7-HSS Level Switches - Horizontal/Specialty
Free U.S Ground shipping
$547.43
$456.19
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Dwyer F7-I Level Switches - Horizontal/Specialty
Free U.S Ground shipping
$1098.55
$915.46
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Dwyer F7-MLK2 Level Switches - Horizontal/Specialty
Free U.S Ground shipping
$3083.51
$2569.59
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Dwyer F7-MLK32 Level Switches - Horizontal/Specialty
Free U.S Ground shipping
$194.34
$161.95
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Dwyer F7-MLK-FLT Level Switches - Horizontal/Specialty
Free U.S Ground shipping
$58.38
$48.65
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Dwyer F7-PP1 Level Switches - Horizontal/Specialty
Free U.S Ground shipping
$42.44
$35.37
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Dwyer F7-PP-10 Level Switches - Horizontal/Specialty
Free U.S Ground shipping
$42.44
$35.37
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Dwyer F7-SS6 Level Switches - Horizontal/Specialty
Free U.S Ground shipping
$426.00
$355.00
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Dwyer F7-SS6B Level Switches - Horizontal/Specialty
Free U.S Ground shipping
$407.14
$339.28
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Dwyer F7-ST713 Level Switches - Horizontal/Specialty
Free U.S Ground shipping
$595.00
$495.83
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Dwyer F7-ST713-20 Level Switches - Horizontal/Specialty
Free U.S Ground shipping
$519.56
$432.97
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Dwyer F7-ST714 Level Switches - Horizontal/Specialty
Free U.S Ground shipping
$519.56
$432.97
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Dwyer F7-WBB Level Switches - Horizontal/Specialty
Free U.S Ground shipping
$422.95
$352.46
Normally In Stock
Dwyer OLS-10 Optitrol® Optical Level Switch
Free U.S Ground shipping
$249.61
$208.01
Normally In Stock
Dwyer L6EPS-S-S-3-C Flotect® Liquid Level Switch
Free U.S Ground shipping
$627.80
$523.17
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Dwyer L6EPS-S-S-3-L Flotect® Liquid Level Switch
Free U.S Ground shipping
$822.97
$685.81
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Dwyer L6EPS-S-S-3-O Flotect® Liquid Level Switch
Free U.S Ground shipping
$530.20
$441.83
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Dwyer L6EPS-S-S-3-S Flotect® Liquid Level Switch
Free U.S Ground shipping
$762.16
$635.13
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Dwyer PDL-1 Paddle Level Switch
Free U.S Ground shipping
$71.71
$59.76
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Dwyer PDL-2 Paddle Level Switch
Free U.S Ground shipping
$68.35
$56.96
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Dwyer PDL-3 Paddle Level Switch
Free U.S Ground shipping
$71.71
$59.76
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Dwyer PDL-4 Paddle Level Switch
Free U.S Ground shipping
$68.35
$56.96
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Dwyer PLS2-E-1-1 Paddle Level Switch
Free U.S Ground shipping
$443.69
$369.74
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Dwyer PLS2-E-1-2 Paddle Level Switch
Free U.S Ground shipping
$435.64
$363.03
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Dwyer PLS2-E-1-3 Paddle Level Switch
Free U.S Ground shipping
$489.48
$407.90
Normally In Stock
Dwyer PLS2-EX1 Paddle Level Switch
Free U.S Ground shipping
$414.20
$345.17

FAQs

Q: What is a level switch used for?
A level switch detects the presence of a liquid or solid material at a specific point within a tank, silo, or vessel. It is used to control equipment, trigger alarms, or protect processes from overfill or empty conditions.

Q: Are level switches suitable for both liquids and bulk solids?
Yes, different types of level switches are designed for liquids and bulk solids. Float, tuning fork, and optical switches are commonly used for liquids, while rotating paddle switches are typically used for powders, pellets, and grains.

Q: Do point-level switches provide a cost-effective solution for tank level monitoring?
Yes, point level switches offer a cost-effective and reliable solution for monitoring fluid levels on tank walls by providing accurate detection at specific set points.

Q: Can reed switches operate in conductive liquids?
Yes, reed switches can operate in conductive liquids because they are magnetically actuated and typically sealed, preventing direct electrical contact with the liquid.

Q: Which level switches use rotating paddles or infrared sensors?
Rotating paddle level switches use a motor-driven paddle to detect the presence of bulk solids, while optical level switches use an infrared LED and receiver to detect liquid levels based on changes in light reflection.

Why Buy Level Switches from RSP Supply

RSP Supply offers a comprehensive selection of level switches designed for reliable liquid and solid level detection in industrial environments. Our product offerings support a wide range of sensing technologies, materials, and installation requirements to meet diverse application needs. Customers rely on RSP Supply for dependable components, technical expertise, and solutions that support accurate process monitoring and control.