Flowline

A recognized leader in non-contact ultrasonic level sensors, Flowline offers some of the most reliable and cost effective solutions for the measurement and control of chemical, waste, and ultrapure liquids. Flowline products, made in the USA, are sold worldwide and are broadly applied in industrial, OEM, municipal, and agricultural containment applications. With over 750,000 successful installations worldwide, Flowline is level made simple.

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Questions? Call one of our engineers at 1-800-884-4967.
Flowline EchoPod DL14 Ultrasonic Level Sensor
Flowline EchoPod DL14 Ultrasonic Level Sensor
Non-contact ultrasonic level switch, controller, and transmitter for small tanks .
Some Models in Stock
Starting at $450.00
Flowline EchoPod UG06 & UG12 Reflective Ultrasonic Level Transmitters
Flowline EchoPod UG06 & UG12 Reflective Ultrasonic Level Transmitters
Multi-function transmitter for continuous level measurement up to 39.3 ft (12m) with a 4-20 mA analog signal output.
Some Models in Stock
Starting at $800.00
Flowline EchoPod DL10 Ultrasonic Level Transmitter
Flowline EchoPod DL10 Ultrasonic Level Transmitter
Continuous non-contact level measurement up to 49.2in (1.25m).
Some Models in Stock
Starting at $400.00
Flowline LU10 Switch Tek Ultrasonic Level Switch
Flowline LU10 Switch Tek Ultrasonic Level Switch
CSA approved intrinsically safe for use in hazardous environments, Submersible polypropylene or PFATeflon sensor and cable for corrosive liquids.
Some Models in Stock
Starting at $330.00
Flowline FT10 / GT10 Thermo-Flo Liquid and Gas Flow Switch
Flowline FT10 / GT10 Thermo-Flo Liquid and Gas Flow Switch
General purpose flow switch provides reliable low or no-flow detection of relatively clean, non-coating media with one 1A relay output.
Some Models in Stock
Starting at $240.00
Flowline Echosonic II Ultrasonic Level Transmitter
Flowline Echosonic II Ultrasonic Level Transmitter
General-purpose ultrasonic level transmitter for non-contact measurement for liquid levels up to 32.8 feet.
Some Models in Stock
Starting at $750.00
Flowline LR80 EchoBeam Liquid and Solids Level Sensor Transmitter
Flowline LR80 EchoBeam Liquid and Solids Level Sensor Transmitter
A non-contact level sensor transmitter with 80GHz radar technology and Bluetooth wireless configuration.
Starting at $795.00
Flowline EchoPod DL24 Ultrasonic Level Transmitter
Flowline EchoPod DL24 Ultrasonic Level Transmitter
Continuous level measurement up to 9.8' (3m) with a 4-20 mA signal output, and is configured via free WebCal software.
Some Models in Stock
Starting at $600.00
Flowline EchoPod UG01 & UG03 Reflective Ultrasonic Level Transmitters
Flowline EchoPod UG01 & UG03 Reflective Ultrasonic Level Transmitters
Multi-function transmitter for continuous level measurement up to 9.8 ft. (3m) with a 4-20 mA analog signal output and four relays.
Some Models in Stock
Starting at $525.00
Flowline LO10 Switch Tek Optic Leak Detection Switch
Flowline LO10 Switch Tek Optic Leak Detection Switch
Submersible polypropylene or PFA Teflon sensor and cable for corrosive liquids, with fail-safe leak sensor.
Starting at $200.00
Flowline AV Float Series Float-Point Level Switch
Flowline AV Float Series Float-Point Level Switch
Multi-point float level switch package for high temp and pressure, 316 stainless steel float, guide and process mounting plug.
Select options for pricing
Flowline EchoTouch US06 Level Transmitter
Flowline EchoTouch US06 Level Transmitter
Replacement for the LU20. Intrinsically safe reflective ultrasonic level transmitter, continuous measurement up to 19.6ft (6m) with 4-20mA signal output.
Starting at $1,000.00
Flowline EchoSafe XP88 / XP89 Ultrasonic Level Sensor
Flowline EchoSafe XP88 / XP89 Ultrasonic Level Sensor
Explosion proof, two-wire ultrasonic level transmitter for non-contact level measurement up to 10m .
Starting at $1,445.00
Flowline LV36 / LH35 / LV35 Switch Tek Float Level Switch
Flowline LV36 / LH35 / LV35 Switch Tek Float Level Switch
316 SS level sensor for high temp and pressure applications, dry contact reed switch selectable NO or NC via float orientation.
Starting at $148.00
Flowline LC10 / LC11 Switch Pro Level Controller
Flowline LC10 / LC11 Switch Pro Level Controller
Compact level switch, two configurations for pump and valve control, fail safe relay control of pumps or valves with 0-60 second delay.
Starting at $285.00
Flowline EchoWave Radar Level Transmitters
Flowline EchoWave Radar Level Transmitters
LG10 & LG11 guided wave radar, liquid level transmitters with 4-20mA output in choice of rod, coaxial or cable probe type.
Starting at $880.00
Flowline LH29 Interstitial Leak Detection Switch
Flowline LH29 Interstitial Leak Detection Switch
Valox sensor body with PP float and Halar jacketed cable for corrosive liquids, Flat/low profile sensor with minimal float.
$278.00
Flowline EchoTouch US01 & US03 Level Transmitter
Flowline EchoTouch US01 & US03 Level Transmitter
Intrinsically safe reflective ultrasonic liquid level transmitter provides continuous level measurement up to 9.8ft (3m).
Starting at $645.00
Flowline LV42 Switch Tek Sump Float Level Switch
Flowline LV42 Switch Tek Sump Float Level Switch
Mercury-free self counter-weighted float switch, submersible polypropylene body and PVC cable for corrosive liquids.
Starting at $270.00
Flowline EchoSwitch Ultrasonic Level Switch
Flowline EchoSwitch Ultrasonic Level Switch
Non-contact level detection up to 26.2ft (8m) with 3 programmable relays and a 4-20mA signal output.
Starting at $1,035.00
Flowline EchoPod DX10 Ultrasonic Level Transmitter
Flowline EchoPod DX10 Ultrasonic Level Transmitter
General purpose ultrasonic sensor providing non-contact level measurement.
Starting at $400.00
Flowline LV10 Switch Tek Vertical Buoyancy Level Switch
Flowline LV10 Switch Tek Vertical Buoyancy Level Switch
Baffle body and stabilized float dampen out switch chatter, submersible polypropylene or PVDF sensor and cable for corrosive liquids.
Starting at $160.00
Flowline LC4 / LC9 Series Switch Pro Remote Level Controller
Flowline LC4 / LC9 Series Switch Pro Remote Level Controller
Three configurations for pump and valve control, fail-safe relay control of pumps or valves with 0-60 second delay.
Starting at $275.00
Flowline EchoSpan Ultrasonic Level Transmitter
Flowline EchoSpan Ultrasonic Level Transmitter
General purpose two-wire ultrasonic level transmitter for non-contact level measurements up to 32ft.
Some Models in Stock
Starting at $800.00
Flowline AV / AZ / AU Smart Trak Level Switch
Flowline AV / AZ / AU Smart Trak Level Switch
Provides reliable, multi-point liquid level detection up to 10’ (3m) with 1-4 adjustable level switch points and a compact junction box.
Select options for pricing
Flowline DeltaSpan LD30 Pressure Level Transmitter
Flowline DeltaSpan LD30 Pressure Level Transmitter
General purpose level transmitter provides continuous level measurement up to 69ft (21m) of water column with a 4-20 mA signal output.
Starting at $368.00
Flowline DataKeep 300500 XP Level Indicator
Flowline DataKeep 300500 XP Level Indicator
Explosion-proof, loop-powered level indicator for wall mounting in hazardous environments.
$1,595.00
Flowline LV41 Switch Tek Float Level Switch
Flowline LV41 Switch Tek Float Level Switch
Mechanically actuated float switch intended for automatic start / stop of electrical components, submersible polypropylene body.
Starting at $114.00
Flowline AZ23 / AU23 / AV23 Smart Trak Level Controller
Flowline AZ23 / AU23 / AV23 Smart Trak Level Controller
Compact, fail-safe relay control of pumps or valves with 0 to 60 second delay, choice of ultrasonic, vibration or buoyancy technology.
Select options for pricing
Flowline EchoPulse LR10 Radar Level Transmitter
Flowline EchoPulse LR10 Radar Level Transmitter
Continuous liquid level measurement up to 32.8ft (10m) with a 4-20 mA signal output, 1.5in NPT process mount.
$1,700.00
Flowline DeltaView LI55 Level Controller
Flowline DeltaView LI55 Level Controller
The Flowline DeltaView LI55 Level Controller displays engineering units with one 4 to 20 mA or 0 to 10 VDC continuous level sensor input.
Starting at $672.00
Flowline EchoPod DL34 Ultrasonic Level Transmitter
Flowline EchoPod DL34 Ultrasonic Level Transmitter
Continuous level measurement up to 18.0’ (5.5m) with a 4-20 mA signal output, and is configured via free Webcal software.
Starting at $800.00
Flowline FloaTek LV55 Float Level Transmitter
Flowline FloaTek LV55 Float Level Transmitter
The general purpose float level transmitter provides continuous level measurement up to 6.5’ (2m) with a 4-20 mA signal output.
Starting at $1,080.00
Flowline EchoPulse LR15 Radar Level Transmitter
Flowline EchoPulse LR15 Radar Level Transmitter
Continuous liquid level measurement up to 98.4ft (30m) with a 4-20 mA signal output, 1.5in NPT process mount.
Starting at $2,400.00
Flowline EchoPulse LR20 Radar Level Transmitter
Flowline EchoPulse LR20 Radar Level Transmitter
Continuous liquid level measurement up to 98.4ft (30m) with a 4-20 mA signal output, accuracy: ±3mm.
Starting at $2,800.00
Flowline AX1X Switch Pak Level Switch
Flowline AX1X Switch Pak Level Switch
Polypropylene or PVDF single-point level switch package for corrosive liquids, 60VA relay or 15VA dry contact selectable.
Starting at $517.00
Flowline DeltaSpan LD31 Submersible Pressure Level Transmitter
Flowline DeltaSpan LD31 Submersible Pressure Level Transmitter
Continuous level measurement up to 46’ (14m) of water column with a 4-20 mA signal output.
Starting at $860.00
Flowline EchoPod DS14 Ultrasonic Level Switch
Flowline EchoPod DS14 Ultrasonic Level Switch
General purpose, non-contact ultrasonic level switch and controller for small tanks.
Starting at $485.00
Flowline EchoPulse LR30 Radar Level Transmitter
Flowline EchoPulse LR30 Radar Level Transmitter
Continuous liquid level measurement up to 98.4ft (30m) with a 4-20 mA signal output, remote push button display module.
$1,800.00
Flowline LH25 / LV20 Switch-Tek Level Switch
Flowline LH25 / LV20 Switch-Tek Level Switch
Simple low-cost level switch solution for basic applications, offered in both vertical and horizontal mounting configurations.
Starting at $40.00
Flowline LC30 Thermo-Flo Flow Controller
Flowline LC30 Thermo-Flo Flow Controller
Compact flow switch w/ fail-safe relay control of pumps or valves w/ 0-60 second delay, provides one 16A relay for low-flow pump or process protection.
Starting at $295.00
Flowline LP50 Switch Tek Level Switch
Flowline LP50 Switch Tek Level Switch
Non-Intrusive Capacitance Level Switch, level detection through plastic or fiberglass walls, polyethylene, polypropylene or PVDF adhesive 3M mounting brackets.
Starting at $300.00
Flowline LP15 Switch Tek Capacitance Level Switch
Flowline LP15 Switch Tek Capacitance Level Switch
Guard circuit optimizes performance in coating type media, submersible polypropylene sensor body and cable for corrosive liquids.
Starting at $320.00
Flowline LZ12 Switch Tek Vibration Level Switch
Flowline LZ12 Switch Tek Vibration Level Switch
Reliable liquid level detection of dirty liquids such as those with light to medium coating, scaling or foaming characteristics with a 1A relay output.
Starting at $370.00
Flowline LC82 Remote Flow Controller
Flowline LC82 Remote Flow Controller
Remote Flow Switch, for low-flow pump and process protection, fail-safe relay control of pumps or valves.
$395.00
Flowline DataPoint LC52
Flowline DataPoint LC52
Single Tank Level Indicator with 2 relays, 1 to 3 set points and an isolated analog repeater.
$485.00
Flowline AZ18 / AU18 Switch Pro Level Switch
Flowline AZ18 / AU18 Switch Pro Level Switch
Liquid level detection with one 1A relay and a compact junction box for integral wiring termination, for corrosive liquid applications.
Starting at $635.00
Flowline AZ13 / AU13 / AV13 Switch Pak Level Controller
Flowline AZ13 / AU13 / AV13 Switch Pak Level Controller
Level switch, Polypropylene or PVDF single-point package for corrosive liquids, fail-safe relay control of pumps or valves with 0-60 second delay.
Select options for pricing
Flowline AX1X Thermo-Flo Flow Controller
Flowline AX1X Thermo-Flo Flow Controller
Compact flow switch, reliable low flow or no flow detection of relatively clean non-coating media with a 16A relay.
Starting at $910.00
Flowline DeltaSpan LD32 Submersible Level Transmitter
Flowline DeltaSpan LD32 Submersible Level Transmitter
Continuous level measurement up to 46ft (14m) of water column with a 4-20 mA signal output.
Starting at $1,260.00
Flowline LI99-2001 Fob USB Interface
Flowline LI99-2001 Fob USB Interface
Facilitates communication between WebCal software and Flowline level transmitters.
In Stock
$65.00
Flowline Installation Fittings
Flowline Installation Fittings
Installation fittings for Flowline Level Transmitters.
Some Models in Stock
Starting at $11.00
Flowline LC95-2001 AC-DC Sensor & Indicator Power Supply
Flowline LC95-2001 AC-DC Sensor & Indicator Power Supply
100-240 VAC, 24 VDC @ 0.45A, 35mm Rail.
$320.00
Flowline LV49-7000 Counter weight
Flowline LV49-7000 Counter weight
Counter Weight for Switch Tek Sump Float LV41/LV42 series .
$22.00
Flowline LP95 Mounting Bracket
Flowline LP95 Mounting Bracket
Non-Intrusive Capacitance Mounting Bracket: polyethylene, polypropylene or PVDF.
Starting at $35.00
Flowline Smart Trak Level Switch Car Kit
Flowline Smart Trak Level Switch Car Kit
Smart Trak Level Switch Car Kit.
Starting at $40.00
Flowline LM51-1800 Reducer Bushing
Flowline LM51-1800 Reducer Bushing
2 inch NPT x 3/4 inch NPT, PVC, Sch 80 reducer bushing.
In Stock
$44.00
Flowline LM53 Reducer Bushings
Flowline LM53 Reducer Bushings
Reducer bushing, thread x thread, NPT, 2" or 3" models.
Starting at $45.00
Flowline Switch-Pak Single-Point Switch Fitting
Flowline Switch-Pak Single-Point Switch Fitting
Switch-Pak Single-Point Switch Fitting: PVC, PP or PVDF.
Starting at $52.00
Flowline FT50-5000 Flow Switch Fitting
Flowline FT50-5000 Flow Switch Fitting
Pulse-point fitting for metering pump applications, for use with FT10/GT10 liquid & gas flow switch.
$114.00
3" Slip x 2" NPT Thread PVC Reducer Bushing
3" Slip x 2" NPT Thread PVC Reducer Bushing
$125.00
Flowline Smart Trak Multi-Point Switch Fitting
Flowline Smart Trak Multi-Point Switch Fitting
Smart Trak Multi-Point Switch Fitting: 2', 4', 6', 8', 10', 1m, 2m or 3m length options.
Starting at $134.00
Flowline LM51-2S00 Reducer Bushing
Flowline LM51-2S00 Reducer Bushing
2 inch NPT x 3/4 inch NPT, 316 stainless steel reducer bushing.
$140.00
Flowline LD90 Junction Box Terminal Strip
Flowline LD90 Junction Box Terminal Strip
Junction Box Terminal Strip, NPT or G plug, PP or PVDF.
Starting at $148.00
Flowline LM50-3S21 Short Bracket
Flowline LM50-3S21 Short Bracket
1in NPT lock nut, 316L short bracket.
$160.00
Flowline LM50-4S21 Short Bracket
Flowline LM50-4S21 Short Bracket
1in G lock nut, 316L short bracket.
$160.00
Flowline LM50-3S31 Short Bracket
Flowline LM50-3S31 Short Bracket
1-1/2in NPT lock nut, 316L short bracket.
$160.00
Flowline LM53-1S80 Adapter
Flowline LM53-1S80 Adapter
1-1/2in NPT to 1-1/2in tri-clamp, 316L adapter.
$160.00
Flowline LM52-1880 Adapter
Flowline LM52-1880 Adapter
1-1/2in NPT to 2in tri-clamp, 316L adapter.
$160.00
Flowline LM50-4S31 Short Bracket
Flowline LM50-4S31 Short Bracket
1-1/2in G lock nut, 316L short bracket.
$160.00
Flowline LM53-4855 Tank Top Fitting Adhesive
Flowline LM53-4855 Tank Top Fitting Adhesive
Adhesive for tank top fitting, 1-1/2in NPT, PVC.
$160.00
Flowline LV49-9000 Cable Hanger
Flowline LV49-9000 Cable Hanger
Cable Hanger for Switch Tek Sump Float series.
$180.00
Flowline LM50-4S32 Long Bracket
Flowline LM50-4S32 Long Bracket
1-1/2in G lock nut, 316L long bracket.
$220.00
Flowline LM53-0440 Capped Adapter
Flowline LM53-0440 Capped Adapter
1-1/2in NPT to 1-1/2in tri-clamp, PTFE capped adapter.
$220.00
Flowline LM53-0444 Capped Adapter
Flowline LM53-0444 Capped Adapter
1-1/2in NPT to 2in tri-clamp, PTFE capped adapter.
$220.00
Flowline LM53-2440 Capped Reducer
Flowline LM53-2440 Capped Reducer
1-1/2in to 2in NPT, PTFE capped reducer.
$220.00
Flowline LM50-3S22 Long Bracket
Flowline LM50-3S22 Long Bracket
1in NPT lock nut, 316L long bracket.
$220.00
Flowline LM50-4S22 Long Bracket
Flowline LM50-4S22 Long Bracket
1in G lock nut, 316L long bracket.
$220.00
Flowline LM50-3S32 Long Bracket
Flowline LM50-3S32 Long Bracket
1-1/2in NPT lock nut, 316L long bracket.
$220.00
Flowline LI40 PodView Local Level Indicator
Flowline LI40 PodView Local Level Indicator
Displays engineering units for level or volume level readings and shares power with an EchoPod ultrasonic sensor, including loop powered devices.
$275.00
Flowline LM53 Flange Fittings
Flowline LM53 Flange Fittings
Flange, ANSI x thread, 3", 4" and 6" sizes available, CPVC and 316 stainless steel material options.
Starting at $302.00
Flowline NEMA Box Single Indicator
Flowline NEMA Box Single Indicator
Nema box, Single Indicator, Non-Windowed 1/8" DIN .
$340.00
Flowline NEMA Box Two Indicator
Flowline NEMA Box Two Indicator
NEMA box, two indicator, Non-Windowed 1/8" DIN .
$380.00
NEMA Box Single Indicator Windowed 1/8" DIN
NEMA Box Single Indicator Windowed 1/8" DIN
$440.00
Flowline Single Controller NEMA Box
Flowline Single Controller NEMA Box
Single Controller, Windowed, 35mm Rail, Polycarbonate.
$500.00