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Level Switches
Level switches detect when liquid or solids reach a set point, triggering alarms, pumps or valves. They're critical for overfill protection and dry-run prevention.
Level Switch Types
- Float switches – simple liquid detection
- Vibrating fork switches – liquids and solids, unaffected by foam
- Conductivity switches – conductive liquids
- Optical switches – compact point detection
- Rotary paddle switches – bulk solids
Choosing a Switch
Consider material, temperature, pressure, buildup and mounting. Use a separate high-level switch for safety.
Nisco supplies level switches.
Related categories: Level Control | Level Transmitters | Float Switches | Level Sensors
Filters 62 Results
62 items
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The Dwyer - LVSW-701 is an Ultrasonic Level Switch featuring Solid State, Liquid, 1 A SPDT, 3/4 " NPT Male, 1000 psi, and 316 SS. It is rated for a temperature range of 71 °C (160 °F). Sold individually.
$346.90
Should ship between 22 Dec and 29 Dec
Subject to factory lead times
The Dwyer - LVN-10 is a Level Switch featuring Low Cost, Liquid, 50 VA SPST, 1/8 " NPT Male, 160 psi, 316 SS, Brass, and Buna. It is rated for a temperature range of 110 °C. Sold individually.
$95.20
Should ship between 19 Nov and 22 Nov
Subject to factory lead times
The Dwyer - LVN-60 is a Level Switch featuring Single-Station, Liquid, 50 VA SPST, 1/8 " NPT Male, 100 psi, and CPVC. It is rated for a temperature range of 82 °C. Part of the LVN-60 Series. Sold individually.
$68.78
Should ship between 19 Nov and 22 Nov
Subject to factory lead times
The Dwyer - LVSW-710 is an Ultrasonic Level Switch featuring Compact Solid State, Liquid, 1 A SPST, 1/4 " NPT Male, 250 psi, and 316 SS. It is rated for a temperature range of 80 °C. Sold individually.
$313.87
Should ship between 01 Dec and 08 Dec
Subject to factory lead times
The Dwyer - LVN-70 is a Level Switch featuring Single-Station, Liquid, 50 VA SPST, 1/8 " NPT Male, 100 psi, and PP. It is rated for a temperature range of 82 °C. Part of the LVN-60 Series. Sold individually.
$70.42
Should ship between 01 Dec and 08 Dec
Subject to factory lead times
The Dwyer - LVN-92 is a Level Switch featuring Side-Mounted, Liquid, 50 VA SPST, 1/2 " NPT Male, 100 psi, and PP. It is rated for a temperature range of 82 °C. Part of the LVN-90 Series. Sold individually.
$68.72
Should ship between 01 Dec and 08 Dec
Subject to factory lead times
The Dwyer - LV622-P is a Float Level Switch featuring Pump Up/Pump Down, Liquid, 15 A SPDT, Tethered, 75 psi, PP, PVC, 15' L Cable, and Circular Design. It is rated for a temperature range of 50 °C. Part of the LV600 Series. Sold individually.
$117.97
Should ship between 19 Nov and 22 Nov
Subject to factory lead times
The Dwyer - LVN-90 is a Level Switch featuring Side-Mounted, Liquid, 50 VA SPST, 1/2 " NPT Male, 100 psi, and CPVC. It is rated for a temperature range of 82 °C. Part of the LVN-90 Series. Sold individually.
$58.62
Should ship between 01 Dec and 08 Dec
Subject to factory lead times
The Dwyer - LVN-93 is a Level Switch featuring Side-Mounted, Liquid, 50 VA SPST, 1/2 " NPT Male, 500 psi, and 316 SS. It is rated for a temperature range of 149 °C. Part of the LVN-90 Series. Sold individually.
$236.82
Should ship between 01 Dec and 08 Dec
Subject to factory lead times
The Dwyer - LVSW-720 is an Ultrasonic Level Switch featuring Compact Solid State, Liquid, 1 A SPST, 1/2 " NPT Male, 250 psi, and 316 SS. It is rated for a temperature range of 80 °C. Sold individually.
$311.93
Should ship between 24 Nov and 01 Dec
Subject to factory lead times
The Dwyer - LVN-20 is a Level Switch featuring Low Cost, Liquid, 50 VA SPST, 1/4 " NPT Male, 225 psi, 316 SS, Brass, and Buna. It is rated for a temperature range of 110 °C. Sold individually.
$93.13
Should ship between 24 Nov and 01 Dec
Subject to factory lead times
The Dwyer - LV622-N is a Float Level Switch featuring Pump Up/Pump Down, Liquid, 15 A SPDT, Tethered, 75 psi, PP, Neoprene, 15' L Cable, and Circular Design. It is rated for a temperature range of 50 °C. Part of the LV600 Series. Sold individually.
$148.60
Should ship between 19 Nov and 22 Nov
Subject to factory lead times
The Dwyer - LVD-803 is a Level Switch featuring Rotary Paddle, Fail-Safe, Dry Material, Solids, 5 A SPDT, 1-1/4 " NPT Male, 115 Vac, 30 psi, and 304 SS. It is rated for a temperature range of 65 °C. Part of the LVD-800 Series. Sold individually.
$625.01
Should ship between 01 Dec and 08 Dec
Subject to factory lead times
The Dwyer - LVU-150-R is an Ultrasonic Level Sensor featuring Liquid, 1 A SPST, 3x 3/4 " NPT Male, 150 psi, and PP. It is rated for a temperature range of 90 °C. Part of the LVU-150-R Series. Sold individually.
$523.82
Should ship between 22 Dec and 29 Dec
Subject to factory lead times
The Dwyer - LVV-110 is a Vertical Buoyancy Sensor featuring Liquid, 15 VA SPST, 3/4 " NPT Male, 25 psi, and PP. It is rated for a temperature range of 90 °C. Part of the LVV-110 Series. Sold individually.
$202.38
Should ship between 22 Dec and 29 Dec
Subject to factory lead times
The Dwyer - LTUR-3022 is a Tuning Fork Point Level Switch featuring Liquid, 5 A SPDT, 1 " NPT Male, 20 Vac/Vdc to 250 Vac/Vdc, 600 psi, 316 SS, and 4 " L Probe. It is rated for a temperature range of 130 °C. Part of the LTU-2000 Series. Sold individually.
$625.97
Should ship between 15 Dec and 22 Dec
Subject to factory lead times
The Dwyer - LTUR-2011 is a Tuning Fork Point Level Switch featuring Liquid, 5 A SPDT, 3/4 " NPT Male, 20 Vdc to 60 Vdc, 20 Vac to 264 Vac, 725 psi, 316 SS, 3-1/8 " L Probe, and Nylon Enclosure. It is rated for a temperature range of 80 °C. Part of the LTU-2000 Series. Sold individually.
$797.85
Should ship between 01 Dec and 08 Dec
Subject to factory lead times
The Dwyer - LVC-152-R is a Capacitance Level Switch featuring Economical, Liquid, 1 A SPST, 3/4 " NPT Male, 12 Vdc to 30 Vdc, 150 psi, PP, and 2.6 " L Probe. It is rated for a temperature range of 90 °C. Sold individually.
$429.07
Should ship between 22 Dec and 29 Dec
Subject to factory lead times
The Dwyer - LV-1201 is a Level Switch featuring Non-Magnetic, Liquid, 15 A SPDT, 1-1/4 " NPT Male, 200 psi, 316 SS, EPDM, and Noryl. It is rated for a temperature range of 10 °C. Part of the LV-1200 Series. Sold individually.
$197.94
Should ship between 19 Nov and 22 Nov
Subject to factory lead times
The Dwyer - LVU-152-R is an Ultrasonic Level Sensor featuring Liquid, 1 A SPST, 4.5x 3/4 " NPT Male, 150 psi, and PP. It is rated for a temperature range of 90 °C. Part of the LVU-150-R Series. Sold individually.
$511.81
Should ship between 22 Dec and 29 Dec
Subject to factory lead times
The Dwyer - LVD-803-EXP is a Level Switch featuring Rotary Paddle, Fail-Safe, Dry Material, Solids, Hazardous Locations, 5 A SPDT, 1-1/4 " NPT Male, 115 Vac, 30 psi, and 304 SS. It is rated for a temperature range of 65 °C. Part of the LVD-800 Series. Sold individually.
$711.49
Should ship between 01 Dec and 08 Dec
Subject to factory lead times
The Dwyer - LV-510 is a Level Switch featuring Single-Station, Vertical, Liquid, 50 VA SPST, 1/8 " NPT Male, 25 psi, and PP. It is rated for a temperature range of 90 °C. Part of the LVN-510 Series. Sold individually.
$51.34
Should ship between 22 Dec and 29 Dec
Subject to factory lead times
The Dwyer - LVCN210 is an Ultrasonic Level Transmitter & Controller featuring Liquid, 1 " NPT Male, ± 0.2 % Accuracy, 30 psi, 3 m (9.8 '), PVDF & FKM, 24 Vdc, 4 mA to 20 mA, and USB & 4 SPST Relays. It is rated for a temperature range of 60 °C. Part of the LVCN210 Series. Sold individually.
$843.07
Should ship between 22 Dec and 29 Dec
Subject to factory lead times
The Dwyer - LVN-61 is a Level Switch featuring Single-Station, Liquid, 50 VA SPST, 1/8 " NPT Male, 100 psi, and PVDF. It is rated for a temperature range of 82 °C. Part of the LVN-60 Series. Sold individually.
$96.24
Should ship between 01 Dec and 08 Dec
Subject to factory lead times
The Dwyer - LVSW-701 is an Ultrasonic Level Switch featuring Solid State, Liquid, 1 A SPDT, 3/4 " NPT Male, 1000 psi, and 316 SS. It is rated for a temperature range of 71 °C (160 °F). Sold individually.
$346.90
Should ship between 22 Dec and 29 Dec
Subject to factory lead times
The Dwyer - LVN-10 is a Level Switch featuring Low Cost, Liquid, 50 VA SPST, 1/8 " NPT Male, 160 psi, 316 SS, Brass, and Buna. It is rated for a temperature range of 110 °C. Sold individually.
$95.20
Should ship between 19 Nov and 22 Nov
Subject to factory lead times
The Dwyer - LVN-60 is a Level Switch featuring Single-Station, Liquid, 50 VA SPST, 1/8 " NPT Male, 100 psi, and CPVC. It is rated for a temperature range of 82 °C. Part of the LVN-60 Series. Sold individually.
$68.78
Should ship between 19 Nov and 22 Nov
Subject to factory lead times
The Dwyer - LVSW-710 is an Ultrasonic Level Switch featuring Compact Solid State, Liquid, 1 A SPST, 1/4 " NPT Male, 250 psi, and 316 SS. It is rated for a temperature range of 80 °C. Sold individually.
$313.87
Should ship between 01 Dec and 08 Dec
Subject to factory lead times
The Dwyer - LVN-70 is a Level Switch featuring Single-Station, Liquid, 50 VA SPST, 1/8 " NPT Male, 100 psi, and PP. It is rated for a temperature range of 82 °C. Part of the LVN-60 Series. Sold individually.
$70.42
Should ship between 01 Dec and 08 Dec
Subject to factory lead times
The Dwyer - LVN-92 is a Level Switch featuring Side-Mounted, Liquid, 50 VA SPST, 1/2 " NPT Male, 100 psi, and PP. It is rated for a temperature range of 82 °C. Part of the LVN-90 Series. Sold individually.
$68.72
Should ship between 01 Dec and 08 Dec
Subject to factory lead times
The Dwyer - LV622-P is a Float Level Switch featuring Pump Up/Pump Down, Liquid, 15 A SPDT, Tethered, 75 psi, PP, PVC, 15' L Cable, and Circular Design. It is rated for a temperature range of 50 °C. Part of the LV600 Series. Sold individually.
$117.97
Should ship between 19 Nov and 22 Nov
Subject to factory lead times
The Dwyer - LVN-90 is a Level Switch featuring Side-Mounted, Liquid, 50 VA SPST, 1/2 " NPT Male, 100 psi, and CPVC. It is rated for a temperature range of 82 °C. Part of the LVN-90 Series. Sold individually.
$58.62
Should ship between 01 Dec and 08 Dec
Subject to factory lead times
The Dwyer - LVN-93 is a Level Switch featuring Side-Mounted, Liquid, 50 VA SPST, 1/2 " NPT Male, 500 psi, and 316 SS. It is rated for a temperature range of 149 °C. Part of the LVN-90 Series. Sold individually.
$236.82
Should ship between 01 Dec and 08 Dec
Subject to factory lead times
The Dwyer - LVSW-720 is an Ultrasonic Level Switch featuring Compact Solid State, Liquid, 1 A SPST, 1/2 " NPT Male, 250 psi, and 316 SS. It is rated for a temperature range of 80 °C. Sold individually.
$311.93
Should ship between 24 Nov and 01 Dec
Subject to factory lead times
The Dwyer - LVN-20 is a Level Switch featuring Low Cost, Liquid, 50 VA SPST, 1/4 " NPT Male, 225 psi, 316 SS, Brass, and Buna. It is rated for a temperature range of 110 °C. Sold individually.
$93.13
Should ship between 24 Nov and 01 Dec
Subject to factory lead times
The Dwyer - LV622-N is a Float Level Switch featuring Pump Up/Pump Down, Liquid, 15 A SPDT, Tethered, 75 psi, PP, Neoprene, 15' L Cable, and Circular Design. It is rated for a temperature range of 50 °C. Part of the LV600 Series. Sold individually.
$148.60
Should ship between 19 Nov and 22 Nov
Subject to factory lead times
The Dwyer - LVD-803 is a Level Switch featuring Rotary Paddle, Fail-Safe, Dry Material, Solids, 5 A SPDT, 1-1/4 " NPT Male, 115 Vac, 30 psi, and 304 SS. It is rated for a temperature range of 65 °C. Part of the LVD-800 Series. Sold individually.
$625.01
Should ship between 01 Dec and 08 Dec
Subject to factory lead times
The Dwyer - LVU-150-R is an Ultrasonic Level Sensor featuring Liquid, 1 A SPST, 3x 3/4 " NPT Male, 150 psi, and PP. It is rated for a temperature range of 90 °C. Part of the LVU-150-R Series. Sold individually.
$523.82
Should ship between 22 Dec and 29 Dec
Subject to factory lead times
The Dwyer - LVV-110 is a Vertical Buoyancy Sensor featuring Liquid, 15 VA SPST, 3/4 " NPT Male, 25 psi, and PP. It is rated for a temperature range of 90 °C. Part of the LVV-110 Series. Sold individually.
$202.38
Should ship between 22 Dec and 29 Dec
Subject to factory lead times
The Dwyer - LTUR-3022 is a Tuning Fork Point Level Switch featuring Liquid, 5 A SPDT, 1 " NPT Male, 20 Vac/Vdc to 250 Vac/Vdc, 600 psi, 316 SS, and 4 " L Probe. It is rated for a temperature range of 130 °C. Part of the LTU-2000 Series. Sold individually.
$625.97
Should ship between 15 Dec and 22 Dec
Subject to factory lead times
The Dwyer - LTUR-2011 is a Tuning Fork Point Level Switch featuring Liquid, 5 A SPDT, 3/4 " NPT Male, 20 Vdc to 60 Vdc, 20 Vac to 264 Vac, 725 psi, 316 SS, 3-1/8 " L Probe, and Nylon Enclosure. It is rated for a temperature range of 80 °C. Part of the LTU-2000 Series. Sold individually.
$797.85
Should ship between 01 Dec and 08 Dec
Subject to factory lead times
The Dwyer - LVC-152-R is a Capacitance Level Switch featuring Economical, Liquid, 1 A SPST, 3/4 " NPT Male, 12 Vdc to 30 Vdc, 150 psi, PP, and 2.6 " L Probe. It is rated for a temperature range of 90 °C. Sold individually.
$429.07
Should ship between 22 Dec and 29 Dec
Subject to factory lead times
The Dwyer - LV-1201 is a Level Switch featuring Non-Magnetic, Liquid, 15 A SPDT, 1-1/4 " NPT Male, 200 psi, 316 SS, EPDM, and Noryl. It is rated for a temperature range of 10 °C. Part of the LV-1200 Series. Sold individually.
$197.94
Should ship between 19 Nov and 22 Nov
Subject to factory lead times
The Dwyer - LVU-152-R is an Ultrasonic Level Sensor featuring Liquid, 1 A SPST, 4.5x 3/4 " NPT Male, 150 psi, and PP. It is rated for a temperature range of 90 °C. Part of the LVU-150-R Series. Sold individually.
$511.81
Should ship between 22 Dec and 29 Dec
Subject to factory lead times
The Dwyer - LVD-803-EXP is a Level Switch featuring Rotary Paddle, Fail-Safe, Dry Material, Solids, Hazardous Locations, 5 A SPDT, 1-1/4 " NPT Male, 115 Vac, 30 psi, and 304 SS. It is rated for a temperature range of 65 °C. Part of the LVD-800 Series. Sold individually.
$711.49
Should ship between 01 Dec and 08 Dec
Subject to factory lead times
The Dwyer - LV-510 is a Level Switch featuring Single-Station, Vertical, Liquid, 50 VA SPST, 1/8 " NPT Male, 25 psi, and PP. It is rated for a temperature range of 90 °C. Part of the LVN-510 Series. Sold individually.
$51.34
Should ship between 22 Dec and 29 Dec
Subject to factory lead times
The Dwyer - LVCN210 is an Ultrasonic Level Transmitter & Controller featuring Liquid, 1 " NPT Male, ± 0.2 % Accuracy, 30 psi, 3 m (9.8 '), PVDF & FKM, 24 Vdc, 4 mA to 20 mA, and USB & 4 SPST Relays. It is rated for a temperature range of 60 °C. Part of the LVCN210 Series. Sold individually.
$843.07
Should ship between 22 Dec and 29 Dec
Subject to factory lead times
The Dwyer - LVN-61 is a Level Switch featuring Single-Station, Liquid, 50 VA SPST, 1/8 " NPT Male, 100 psi, and PVDF. It is rated for a temperature range of 82 °C. Part of the LVN-60 Series. Sold individually.
$96.24
Should ship between 01 Dec and 08 Dec
Subject to factory lead times
FAQ
- A level switch is a point-level device that closes (or opens) a contact when liquid or bulk solid reaches a setpoint height. Used for high and low alarms, pump start/stop, and process interlocks. Float switches are the most common, but you'll also find conductive, capacitance, vibrating fork, and optical level switches, each suited to different media.
- Floats are the most common - cheap and reliable for clean liquids. Conductive switches use two electrodes that complete a circuit through the liquid, so they only work on conductive fluids. Capacitance switches detect the change in dielectric when fluid covers the probe. Vibrating fork switches use a tuning fork whose vibration dampens when buried in liquid or solid. Optical switches see a change in refractive index when liquid covers the prism. Each one has fluids it handles well and fluids it doesn't.
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About NISCO Inc.
NISCO offers a wide range of pressure gauges & instruments, diaphragm seals, thermometers, valves, and flow control products to the industrial and commercial marketplaces, as well as other resellers like ourselves. We can also provide other value-added services such as gauge repair, NIST traceable calibration, diaphragm seal assembly, and valve automation. NISCO takes pride in providing extensive product knowledge, helpful customer service, and market competitive pricing to help fit whatever need you may have because it is our goal to be regarded by our customers as the best supplier of pressure, temperature, and flow control products.