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Flow Control
Optimize performance and efficiency with our reliable flow control products. Engineered for accurate regulation and monitoring of fluid and air flow, these components ensure smooth, consistent operation across a wide ...
Categories in Flow Control (4)
Flow MetersMeasure the rate and total volume of liquids, gases, and steam moving through process piping with instruments that help operators control batches, track inventory, and improve efficiency. Our flow meter catalog spans magnetic, ultrasonic, turbine, vortex, and Coriolis technologies for virtually every fluid and pipe size.
Flow SensorsContinuous flow data is the foundation of modern process automation, and our flow sensors provide it across a wide range of pipe sizes and fluid types. Paddle-wheel, thermal, magnetic, and ultrasonic technologies offer the right balance of accuracy and cost for every application.
Flow SwitchesWhen fluid movement falls outside set thresholds, flow switches trigger alarms or shutdowns that protect pumps, heaters, and cooling systems from costly damage. Mechanical, thermal, and ultrasonic models support insertion and inline installation in pipes of every size.
Flow TransmittersIntegrate flow measurement with PLCs, DCSs, and SCADA systems using transmitters that convert raw sensor signals into standardized 4-20 mA or digital outputs. Pair these instruments with magnetic, vortex, or differential pressure elements for a complete flow-monitoring solution.
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The Dwyer - FL-2064 is a Variable Area Flow Meter featuring Air, 30 LPM to 300 LPM, 100 psi, 1/4 " NPT Female, ± 3 %, Direct Read, Acrylic, Buna, Brass, and w/Valve. It is rated for a temperature range of 65 °C (150 °F). Part of the FL-2000 Series. Sold individually.
$222.05
Should ship between 12 Dec and 19 Dec
Subject to factory lead times
The Dwyer - FT-MC26-02 is a Quick Coupling Insert featuring Plug, Threaded, 1/8 " NPT Female, Straight, Chrome-Plated Brass, and Straight Thru. Part of the FT-MC Series. Sold individually.
$27.85
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - FL7303 is a Variable Area Flow Meter featuring OEM-Style, Water, 0.35 GPM to 3.5 GPM, 125 psi, 1/2 " NPT Female, ± 6 %, Direct Read, 316 SS, Acrylic, and EPR. It is rated for a temperature range of 54 °C (130 °F). Part of the FL7000 Series. Sold individually.
$114.33
Should ship between 09 Nov and 12 Nov
Subject to factory lead times
The Dwyer - FS-100-050 is a Flow Switch for Threaded Plastic Piping featuring Liquid, 0.5 GPM Switch Point, 50 VA SPST, 3/4 ", NPT Female, ± 10 % Accuracy, PP, and 12 " (300mm) Wire L. Part of the FS-100 Series. Sold individually.
$114.77
Should ship between 21 Nov and 28 Nov
Subject to factory lead times
The Dwyer - FT-MCD10-02 is a Quick Coupling Body featuring Socket, Threaded, 1/8 " NPT Male, Straight, Chrome-Plated Brass, and Shutoff. Part of the FT-MC Series. Sold individually.
$44.29
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - FTTP-88 is an Adaptor featuring Compression Fitting, 1/2 " NPT Male, Straight, PFA, and 1/2 " (OD). Part of the FTTP Series. Sold individually.
$133.31
Should ship between 21 Nov and 28 Nov
Subject to factory lead times
The Dwyer - FLSC-AMP is a Low Level Amplifier featuring DC Supply, 20 mV to 50 V I/P, 110 Vac O/P, Bridge, Strain I/P & Open Collector O/P Class, and Ultra Low Speed to 15 kHz Operation. Sold individually.
$143.76
Should ship between 14 Nov and 21 Nov
Subject to factory lead times
The Dwyer - BV1000TRN025A is a Vision Turbine Flow Meter featuring NSF/ANSI Certified, Liquid, 0.1 LPM to 2.5 LPM, 1/4 ", NPT Male, ± 3 %, Amplified Square Wave, Trogamid, PTFE, Graphite, and 3-Pin Mini DIN. Part of the BV1000 Series. Sold individually.
$121.91
Should ship between 06 Feb and 13 Feb
Subject to factory lead times
The Dwyer - FL7302 is a Variable Area Flow Meter featuring OEM-Style, Water, 0.2 GPM to 2 GPM, 125 psi, 1/2 " NPT Female, ± 6 %, Direct Read, 316 SS, Acrylic, and EPR. It is rated for a temperature range of 54 °C (130 °F). Part of the FL7000 Series. Sold individually.
$113.57
Should ship between 09 Nov and 12 Nov
Subject to factory lead times
The Dwyer - FLC-W11 is a Variable Area Flow Meter featuring Clear In-line, Water, 0.5 GPM to 5 GPM, 325 psi, 1/2 " NPT Female, ± 5 %, Direct Read, Brass, Polycarbonate, SS, Polysulfone, and Buna. It is rated for a temperature range of 93 °C (200 °F). Part of the FLC Series. Sold individually.
$252.01
Should ship between 21 Nov and 28 Nov
Subject to factory lead times
The Dwyer - FL-2014-NV is a Variable Area Flow Meter featuring Air, 1 LPM to 10 LPM, 100 psi, 1/8 " NPT Female, ± 5 %, Direct Read, Acrylic, Buna, and Brass. It is rated for a temperature range of 65 °C (150 °F). Part of the FL-2000 Series. Sold individually.
$93.50
Should ship between 12 Dec and 19 Dec
Subject to factory lead times
The Dwyer - FL-2013-NV is a Variable Area Flow Meter featuring Air, 0.4 LPM to 5 LPM, 100 psi, 1/8 " NPT Female, ± 5 %, Direct Read, Acrylic, Buna, and Brass. It is rated for a temperature range of 65 °C (150 °F). Part of the FL-2000 Series. Sold individually.
$76.23
Should ship between 12 Dec and 19 Dec
Subject to factory lead times
The Dwyer - FLR1008 is a Turbine Flow Meter featuring Low-Flow, Liquid, 20 mL/min to 200 mL/min, 1/4 ", Compression Fitting, ± 3 %, 0 Vdc to 5 Vdc, PPS, Glass, SS, Sapphire, and FKM. Part of the FLR1000 Series. Sold individually.
$472.13
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - FPB151 is a Paddlewheel Flow Sensor featuring General Purpose, 12 Vdc to 32 Vdc, 0.3 FPS to 20 FPS, ± 1 % Accuracy, 4 mA to 20 mA, Titanium, 180 psi, and 1/2 " to 4 " Pipe. Part of the FPB100 Series. Sold individually.
$862.10
Should ship between 12 Dec and 19 Dec
Subject to factory lead times
The Dwyer - FSW-160 is a Flow Switch featuring Paddle, Heavy Duty, Liquid, 4 GPM to 500 GPM, 15 A SPDT, 1 ", NPT Male, ± 1 % Accuracy, 316 SS, 304 SS, Brass, and EPDM. Sold individually.
$254.33
Should ship between 09 Nov and 12 Nov
Subject to factory lead times
The Dwyer - FL-2009 is a Variable Area Flow Meter featuring Air, 20 SCFH to 200 SCFH, 100 psi, 1/8 " NPT Female, ± 5 %, Direct Read, Acrylic, Buna, Brass, and w/Valve. It is rated for a temperature range of 65 °C (150 °F). Part of the FL-2000 Series. Sold individually.
$110.74
Should ship between 12 Dec and 19 Dec
Subject to factory lead times
The Dwyer - FDT-25 is an Ultrasonic Flow Meter Kit featuring Portable, Digital, Clean Fluids, 0.03 FPS to 105 FPS, 3/4 " to 4 " Pipe, ± 1 %, Rechargeable Battery, Handheld with Transducers, and LCD Display. Sold individually.
$2,196.51
Should ship between 28 Nov and 12 Dec
Subject to factory lead times
The Dwyer - FL-2049-SS is a Variable Area Flow Meter featuring Water, 40 SCCM to 660 SCCM, 100 psi, 1/8 " NPT Female, ± 3 %, Direct Read, SS, Acrylic, FKM, and w/Valve. It is rated for a temperature range of 65 °C (150 °F). Part of the FL-2000 Series. Sold individually.
$147.61
Should ship between 12 Dec and 19 Dec
Subject to factory lead times
The Dwyer - FT-MCD24-02 is a Quick Coupling Insert featuring Plug, Threaded, 1/8 " NPT Male, Straight, Chrome-Plated Brass, and Shutoff. Part of the FT-MC Series. Sold individually.
$46.60
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - FTTP-4G is a Grab-Seal Gripper for Compression Tubes featuring Cap/Plug, PFA, and 1/4 " (OD). Part of the FTTP Series. Sold individually.
$24.72
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - FLDA3221ST is a Variable Area Flow Meter featuring Air, 7.5 mL/min to 75 mL/min, 200 psi, 1/8 " NPT Female, ± 5 %, Direct Read, Aluminum, Glass, Buna, 316 SS, and w/Valve. It is rated for a temperature range of 121 °C (250 °F). Part of the FLD Series. Sold individually.
$197.65
Should ship between 21 Nov and 28 Nov
Subject to factory lead times
The Dwyer - FL-2014 is a Variable Area Flow Meter featuring Air, 1 LPM to 10 LPM, 100 psi, 1/8 " NPT Female, ± 5 %, Direct Read, Acrylic, Buna, Brass, and w/Valve. It is rated for a temperature range of 65 °C (150 °F). Part of the FL-2000 Series. Sold individually.
$104.84
Should ship between 26 Dec and 02 Jan
Subject to factory lead times
The Dwyer - FLDA3220ST is a Variable Area Flow Meter featuring Air, 5 mL/min to 50 mL/min, 200 psi, 1/8 " NPT Female, ± 5 %, Direct Read, Aluminum, Glass, Buna, 316 SS, and w/Valve. It is rated for a temperature range of 121 °C (250 °F). Part of the FLD Series. Sold individually.
$208.81
Should ship between 21 Nov and 28 Nov
Subject to factory lead times
The Dwyer - FL-505 is a Flow Meter featuring In-line, 5 SCFM to 50 SCFM Air, 0.5 GPM to 5 GPM Water, 100 psi, 1 " NPT Female, ± 5 %, Direct Read, 316 SS, PVC, and FKM. It is rated for a temperature range of 65 °C (150 °F). Part of the FL-500 Series. Sold individually.
$277.46
Should ship between 09 Jan and 16 Jan
Subject to factory lead times
The Dwyer - FL-2064 is a Variable Area Flow Meter featuring Air, 30 LPM to 300 LPM, 100 psi, 1/4 " NPT Female, ± 3 %, Direct Read, Acrylic, Buna, Brass, and w/Valve. It is rated for a temperature range of 65 °C (150 °F). Part of the FL-2000 Series. Sold individually.
$222.05
Should ship between 12 Dec and 19 Dec
Subject to factory lead times
The Dwyer - FT-MC26-02 is a Quick Coupling Insert featuring Plug, Threaded, 1/8 " NPT Female, Straight, Chrome-Plated Brass, and Straight Thru. Part of the FT-MC Series. Sold individually.
$27.85
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - FL7303 is a Variable Area Flow Meter featuring OEM-Style, Water, 0.35 GPM to 3.5 GPM, 125 psi, 1/2 " NPT Female, ± 6 %, Direct Read, 316 SS, Acrylic, and EPR. It is rated for a temperature range of 54 °C (130 °F). Part of the FL7000 Series. Sold individually.
$114.33
Should ship between 09 Nov and 12 Nov
Subject to factory lead times
The Dwyer - FS-100-050 is a Flow Switch for Threaded Plastic Piping featuring Liquid, 0.5 GPM Switch Point, 50 VA SPST, 3/4 ", NPT Female, ± 10 % Accuracy, PP, and 12 " (300mm) Wire L. Part of the FS-100 Series. Sold individually.
$114.77
Should ship between 21 Nov and 28 Nov
Subject to factory lead times
The Dwyer - FT-MCD10-02 is a Quick Coupling Body featuring Socket, Threaded, 1/8 " NPT Male, Straight, Chrome-Plated Brass, and Shutoff. Part of the FT-MC Series. Sold individually.
$44.29
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - FTTP-88 is an Adaptor featuring Compression Fitting, 1/2 " NPT Male, Straight, PFA, and 1/2 " (OD). Part of the FTTP Series. Sold individually.
$133.31
Should ship between 21 Nov and 28 Nov
Subject to factory lead times
The Dwyer - FLSC-AMP is a Low Level Amplifier featuring DC Supply, 20 mV to 50 V I/P, 110 Vac O/P, Bridge, Strain I/P & Open Collector O/P Class, and Ultra Low Speed to 15 kHz Operation. Sold individually.
$143.76
Should ship between 14 Nov and 21 Nov
Subject to factory lead times
The Dwyer - BV1000TRN025A is a Vision Turbine Flow Meter featuring NSF/ANSI Certified, Liquid, 0.1 LPM to 2.5 LPM, 1/4 ", NPT Male, ± 3 %, Amplified Square Wave, Trogamid, PTFE, Graphite, and 3-Pin Mini DIN. Part of the BV1000 Series. Sold individually.
$121.91
Should ship between 06 Feb and 13 Feb
Subject to factory lead times
The Dwyer - FL7302 is a Variable Area Flow Meter featuring OEM-Style, Water, 0.2 GPM to 2 GPM, 125 psi, 1/2 " NPT Female, ± 6 %, Direct Read, 316 SS, Acrylic, and EPR. It is rated for a temperature range of 54 °C (130 °F). Part of the FL7000 Series. Sold individually.
$113.57
Should ship between 09 Nov and 12 Nov
Subject to factory lead times
The Dwyer - FLC-W11 is a Variable Area Flow Meter featuring Clear In-line, Water, 0.5 GPM to 5 GPM, 325 psi, 1/2 " NPT Female, ± 5 %, Direct Read, Brass, Polycarbonate, SS, Polysulfone, and Buna. It is rated for a temperature range of 93 °C (200 °F). Part of the FLC Series. Sold individually.
$252.01
Should ship between 21 Nov and 28 Nov
Subject to factory lead times
The Dwyer - FL-2014-NV is a Variable Area Flow Meter featuring Air, 1 LPM to 10 LPM, 100 psi, 1/8 " NPT Female, ± 5 %, Direct Read, Acrylic, Buna, and Brass. It is rated for a temperature range of 65 °C (150 °F). Part of the FL-2000 Series. Sold individually.
$93.50
Should ship between 12 Dec and 19 Dec
Subject to factory lead times
The Dwyer - FL-2013-NV is a Variable Area Flow Meter featuring Air, 0.4 LPM to 5 LPM, 100 psi, 1/8 " NPT Female, ± 5 %, Direct Read, Acrylic, Buna, and Brass. It is rated for a temperature range of 65 °C (150 °F). Part of the FL-2000 Series. Sold individually.
$76.23
Should ship between 12 Dec and 19 Dec
Subject to factory lead times
The Dwyer - FLR1008 is a Turbine Flow Meter featuring Low-Flow, Liquid, 20 mL/min to 200 mL/min, 1/4 ", Compression Fitting, ± 3 %, 0 Vdc to 5 Vdc, PPS, Glass, SS, Sapphire, and FKM. Part of the FLR1000 Series. Sold individually.
$472.13
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - FPB151 is a Paddlewheel Flow Sensor featuring General Purpose, 12 Vdc to 32 Vdc, 0.3 FPS to 20 FPS, ± 1 % Accuracy, 4 mA to 20 mA, Titanium, 180 psi, and 1/2 " to 4 " Pipe. Part of the FPB100 Series. Sold individually.
$862.10
Should ship between 12 Dec and 19 Dec
Subject to factory lead times
The Dwyer - FSW-160 is a Flow Switch featuring Paddle, Heavy Duty, Liquid, 4 GPM to 500 GPM, 15 A SPDT, 1 ", NPT Male, ± 1 % Accuracy, 316 SS, 304 SS, Brass, and EPDM. Sold individually.
$254.33
Should ship between 09 Nov and 12 Nov
Subject to factory lead times
The Dwyer - FL-2009 is a Variable Area Flow Meter featuring Air, 20 SCFH to 200 SCFH, 100 psi, 1/8 " NPT Female, ± 5 %, Direct Read, Acrylic, Buna, Brass, and w/Valve. It is rated for a temperature range of 65 °C (150 °F). Part of the FL-2000 Series. Sold individually.
$110.74
Should ship between 12 Dec and 19 Dec
Subject to factory lead times
The Dwyer - FDT-25 is an Ultrasonic Flow Meter Kit featuring Portable, Digital, Clean Fluids, 0.03 FPS to 105 FPS, 3/4 " to 4 " Pipe, ± 1 %, Rechargeable Battery, Handheld with Transducers, and LCD Display. Sold individually.
$2,196.51
Should ship between 28 Nov and 12 Dec
Subject to factory lead times
The Dwyer - FL-2049-SS is a Variable Area Flow Meter featuring Water, 40 SCCM to 660 SCCM, 100 psi, 1/8 " NPT Female, ± 3 %, Direct Read, SS, Acrylic, FKM, and w/Valve. It is rated for a temperature range of 65 °C (150 °F). Part of the FL-2000 Series. Sold individually.
$147.61
Should ship between 12 Dec and 19 Dec
Subject to factory lead times
The Dwyer - FT-MCD24-02 is a Quick Coupling Insert featuring Plug, Threaded, 1/8 " NPT Male, Straight, Chrome-Plated Brass, and Shutoff. Part of the FT-MC Series. Sold individually.
$46.60
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - FTTP-4G is a Grab-Seal Gripper for Compression Tubes featuring Cap/Plug, PFA, and 1/4 " (OD). Part of the FTTP Series. Sold individually.
$24.72
Should ship between 05 Dec and 12 Dec
Subject to factory lead times
The Dwyer - FLDA3221ST is a Variable Area Flow Meter featuring Air, 7.5 mL/min to 75 mL/min, 200 psi, 1/8 " NPT Female, ± 5 %, Direct Read, Aluminum, Glass, Buna, 316 SS, and w/Valve. It is rated for a temperature range of 121 °C (250 °F). Part of the FLD Series. Sold individually.
$197.65
Should ship between 21 Nov and 28 Nov
Subject to factory lead times
The Dwyer - FL-2014 is a Variable Area Flow Meter featuring Air, 1 LPM to 10 LPM, 100 psi, 1/8 " NPT Female, ± 5 %, Direct Read, Acrylic, Buna, Brass, and w/Valve. It is rated for a temperature range of 65 °C (150 °F). Part of the FL-2000 Series. Sold individually.
$104.84
Should ship between 26 Dec and 02 Jan
Subject to factory lead times
The Dwyer - FLDA3220ST is a Variable Area Flow Meter featuring Air, 5 mL/min to 50 mL/min, 200 psi, 1/8 " NPT Female, ± 5 %, Direct Read, Aluminum, Glass, Buna, 316 SS, and w/Valve. It is rated for a temperature range of 121 °C (250 °F). Part of the FLD Series. Sold individually.
$208.81
Should ship between 21 Nov and 28 Nov
Subject to factory lead times
The Dwyer - FL-505 is a Flow Meter featuring In-line, 5 SCFM to 50 SCFM Air, 0.5 GPM to 5 GPM Water, 100 psi, 1 " NPT Female, ± 5 %, Direct Read, 316 SS, PVC, and FKM. It is rated for a temperature range of 65 °C (150 °F). Part of the FL-500 Series. Sold individually.
$277.46
Should ship between 09 Jan and 16 Jan
Subject to factory lead times
FAQ
- Volumetric flow measures the volume of fluid passing per unit time (gpm, cfm, m³/hr). Mass flow measures the actual mass moving (lb/hr, kg/hr). They diverge whenever density changes (compressible gases under varying pressure, liquids at varying temperature). For custody transfer of gas, batching by recipe weight, or any process where mass matters, use mass flow. For most water and bulk liquid work, volumetric is fine.
- Flow meter: the full measurement device (sensor plus electronics that output a reading or signal). Flow sensor: just the sensing element, often integrated into a meter. Flow switch: triggers a relay when flow crosses a setpoint (no continuous reading). Flow transmitter: outputs 4-20 mA or digital for the control system. Sometimes the same physical device fills multiple roles depending on the model.
- Driven by the fluid (clean liquid, dirty water, viscous, gas, steam, slurry), the line size, accuracy required, pressure drop budget, and process conditions (pressure, temperature). Then layer in straight-pipe requirements, installation orientation, and how much you're willing to spend. Magmeter for clean conductive liquids, Coriolis for accuracy and mass measurement, vortex for steam and gas, turbine for clean fuel and water. There's no single right answer.
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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.