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Variable Area Flow Meters

61 Products
Variable Area In-line Liquid Flow Meters

The FLMW and FLMH flowmeters can be installed in the fluid line without flow straighteners. The spring-and-piston type assembly protects them against changes in viscosity.

Product Number Materials Output Signal Process Connection Size Scale Media Calibration Water Flow, Max
FLMH-1005SS
TWD45,634 / each
Available
in 4 weeks
Stainless Steel
N/A
1 in
Oil
5 GPM
FLMH-1205SS
TWD36,253 / each
Available
in 10 weeks
Stainless Steel
N/A
1/2 in
Oil
5 GPM
FLMH-1401AL
TWD12,830 / each
Available
in 4 weeks
Aluminum
N/A
1/4 in
Oil
1 GPM
FLMH-1405BR
TWD15,968 / each
Available
in 4 weeks
Brass
N/A
1/4 in
Oil
5 GPM
FLMH-3430SS
TWD45,634 / each
Available
in 4 weeks
Stainless Steel
N/A
3/4 in
Oil
30 GPM
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PTFE Variable Area Flow Meters with PTFE Valves

The FL-3000 and FL-3100 flowmeters are designed for applications which involve corrosive or ultra-pure fluids. The meters are equipped with built-in PTFE needle valves.

Product Number Water Flow, Max
FL-3139SA
TWD21,045 / each
4  In Stock
315 SCCM
FL-3007SA
TWD15,437 / each
Available
in 5 weeks
0.251 SCCM
FL-3010SA
TWD15,437 / each
Available
in 5 weeks
4.7 SCCM
FL-3035SA
TWD15,437 / each
1  In Stock
0.98 SCCM
FL-3051SA
TWD15,437 / each
Available
in 5 weeks
33.3 SCCM
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Variable Area Flow Meter For Liquids

Made of PTFE, PFA, and PCTFE, the Model FL-10 liquid flow meter is excellent for high-purity flow applications or with corrosive liquids. Available with or without a valve.

Product Number Process Connection Size Valve Included Water Flow, Max
FL-10E
TWD14,699 / each
Available
in 6 weeks
1/4 in
false
1000 ml/min
FL-10B-V
TWD20,989 / each
1  In Stock
1/4 in
true
250 ml/min
FL-10C-V
TWD22,169 / each
Available
in 5 weeks
1/4 in
true
400 ml/min
FL-10D-V
TWD21,265 / each
Available
in 8 weeks
1/4 in
true
500 ml/min
FL-10E-V
TWD21,265 / each
Available
in 5 weeks
1/4 in
true
1000 ml/min
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Easy-View Flow Meters with Adjustable Flow Alarm

The FL9000-AC flowmeters are ideal for a wide range of flow monitoring applications. Additional features include an adjustable flow alarm externally mounted on the meter.

Product Number Materials Process Connection Type Scale Media Calibration Switch Rating Water Flow, Max
FL9116-AC
TWD13,713 / each
Available
in 4 weeks
Polysulfone
NPT Male
Oil
0.5 A @ 125 Vac
16 GPM
Economical In-Line Variable Area Flow Meters

The FL-7000A Series of General purpose flowmeters is designed to provide accurate flowrate indication for oil and water. These flowmeters can be mounted in any position.

Product Number Scale Media Calibration Water Flow, Max
FL-7102A
TWD18,902 / each
Available
in 6 weeks
N/A
2 GPM
FL-7105A
TWD19,175 / each
Available
in 5 weeks
N/A
5 GPM
FL-7130A
TWD19,175 / each
Available
in 5 weeks
Oil
30 GPM
Large Capacity In-line Variable Area Flow Meters

The FL-8000A Series of general purpose flowmeters is designed to provide economical, accurate flow rate indication for oil and water and can be mounted in any position.

Product Number Scale Media Calibration Water Flow, Max
FL-8105A
TWD48,764 / each
Available
in 4 weeks
Oil
50 GPM
FL-8307AB
TWD77,347 / each
Available
in 4 weeks
Water
75 GPM
FL-8309AB
TWD78,848 / each
Available
in 4 weeks
Water
100 GPM
Panel Mount Variable Area Flow Meters For Water

FL50000A Series flowmeters feature a rugged, one-piece acrylic body, stainless steel internal parts, rear inlet and outlet ports for panel mounting, and excellent accuracy.

Product Number Materials Process Connection Size Valve Included Water Flow, Max
FL50001A
TWD7,353 / each
27  In Stock
PVC
1/4 in
false
0.25 GPM
Multi-tube and Gas Proportioning Variable Area Flow Meters

The FL1GP-8GP Series are used to blend two or three gases in homogeneous infinitely variable concentrations directly at the end use point.

Product Number flow-tube-1-max flow-tube-2-max flow-tube-3-max Materials number-of-tubes Valve Type
FL-4GP-03ST-03ST
TWD44,930 / each
1  In Stock
3903 cm³/min
3903 cm³/min
0 cm³/min
316 Stainless Steel
2
16-Turn Valve
In-line Variable Area Flow Meters

OMEGA's FL-6400A in-line flowmeters are designed for use with many caustic or corrosive fluids. These meters feature SS construction and can be mounted in any position.

Product Number Water Flow, Max
FL-6404A-316
TWD45,475 / each
1  In Stock
5 GPM
FL-6412A-316
TWD45,475 / each
Available
in 6 weeks
10 GPM
Oxygen - Direct Read, Panel Mount Variable Area Flow Meters

Discover the Oxygen Direct Read Panel Mount Flow Meters, designed for precise flow measurement in various applications, ensuring reliability and ease of use.

Product Number Float Type Oxygen Flow, Max Scale Length Valve Type
FLDO3502S
TWD18,434 / each
Available
in 5 weeks
Sapphire
5 l/min
150 mm
6-Turn Valve
FLDO3503C
TWD17,683 / each
Available
in 5 weeks
Carboloy
10 l/min
150 mm
6-Turn Valve
FLDO3507S
TWD17,686 / each
Available
in 8 weeks
Sapphire
400 ml/min
150 mm
6-Turn Valve
FLDO3303ST
TWD13,702 / each
1  In Stock
316 Stainless Steel
8 l/min
65 mm
6-Turn Valve
FLDO3306ST
TWD13,698 / each
Available
in 5 weeks
316 Stainless Steel
300 ml/min
65 mm
6-Turn Valve
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Precision Flowmeters: 2\", 5\", 10\" Scales, NIST Calibration available, Mountable

Discover the Precision Flowmeters by Rate-Master®, featuring 2", 5", and 10" scales. Ideal for gas and liquid applications, they offer easy installation and accurate readings.

Product Number Dual Range Gas Flow, Max Liquid Flow, Max Process Connection Size Valve Type
RMA-150-SSV
TWD4,236 / each
Available
in 5 weeks
No
100 cm³/min
0 m³/s
1/8 in
Stainless Steel Valve
RMA-1
TWD2,423 / each
Available
in 5 weeks
No
0.4 SCFH
0 m³/s
1/8 in
No Valve
RMA-2
TWD2,423 / each
Available
in 5 weeks
No
1 SCFH
0 m³/s
1/8 in
No Valve
RMA-3
TWD2,423 / each
Available
in 5 weeks
No
2 SCFH
0 m³/s
1/8 in
No Valve
RMA-4
TWD2,423 / each
Available
in 5 weeks
No
5 SCFH
0 m³/s
1/8 in
No Valve
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Acrylic Flowmeter for Gas & Liquid – PVC/Acetal 1\" NPT, NIST Option

The Acrylic Flowmeter for Gas & Liquid features a clear acrylic body, ensuring visibility and accuracy. Ideal for medical, laboratory, and environmental applications.

Product Number Connection Location Gas Flow, Max Liquid Flow, Max Process Connection Type
VFC-122
TWD7,333 / each
Available
in 5 weeks
Back Connection
50 SCFM
0 m³/s
NPT Female
VFC-121
TWD6,859 / each
Available
in 5 weeks
Back Connection
25 SCFM
0 m³/s
NPT Female
VFC-123
TWD7,013 / each
Available
in 5 weeks
Back Connection
100 SCFM
0 m³/s
NPT Female
VFC-131
TWD7,013 / each
Available
in 5 weeks
Back Connection
700 l/min
0 m³/s
NPT Female
VFC-132
TWD7,013 / each
Available
in 5 weeks
Back Connection
1400 l/min
0 m³/s
NPT Female
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Acrylic Flowmeters for Gas/Liquid, 2\" & 4\" Scales, NIST Options

Discover the Series VF Visi-Float® Flowmeters, precision acrylic flowmeters designed for gas and liquid applications. Available in 2" and 4" scales for accurate readings.

Product Number Connection Location Dual Range Gas Flow, Max Liquid Flow, Max Material Construction Option Scale Length Valve Type
VFA-22-BV
TWD2,563 / each
Available
in 5 weeks
Back Connection
N/A
1 l/min
0 m³/s
Nickel Plated Brass
2 in
Brass Valve
VFA-1
TWD1,958 / each
Available
in 5 weeks
Back Connection
N/A
1 SCFH
0 m³/s
Nickel Plated Brass
2 in
N/A
VFA-2
TWD2,011 / each
Available
in 5 weeks
Back Connection
N/A
2 SCFH
0 m³/s
Nickel Plated Brass
2 in
N/A
VFA-3
TWD2,056 / each
Available
in 5 weeks
Back Connection
N/A
5 SCFH
0 m³/s
Nickel Plated Brass
2 in
N/A
VFA-4
TWD2,056 / each
Available
in 5 weeks
Back Connection
N/A
10 SCFH
0 m³/s
Nickel Plated Brass
2 in
N/A
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Flowmeters for GPM & LPM – 3 to 11 in – For Chill & RO Water Systems

Polycarbonate Flowmeters are made of precision, injection molded polycarbonate bodies and fittings. They feature dual, direct reading scales measuring in both GPM and LPM.

Product Number Liquid Flow, Max Material Construction Option Process Connection Size Scale Length
LFMA-02-A2
TWD2,798 / each
Available
in 20 weeks
2 GPM
N/A
1/2 in
3 in
LFMA-01-A2
TWD2,684 / each
Available
in 20 weeks
1 GPM
N/A
1/2 in
3 in
LFMA-03-A2
TWD2,684 / each
Available
in 20 weeks
5 GPM
N/A
1/2 in
3 in
LFMC-07-A2
TWD4,193 / each
Available
in 20 weeks
2.5 GPM
N/A
1/2 in
5 in
LFMC-08-A2
TWD4,193 / each
Available
in 20 weeks
5 GPM
N/A
1/2 in
5 in
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Durable In-Line Flow Monitors for Gases, Oil, or Water - Series HF

In-Line Flow Monitors are ideal for direct measurement for a range of compatible gases, oil, or water based liquids. Applications include pulp and paper and heating loop flow.

Product Number Material Construction Option Operating Temperature, Max Process Connection Size Volumetric Flow Rate, Max Volumetric Flow Rate, Min
HFB-4-35
TWD36,503 / each
Available
in 10 weeks
Brass
240 °F
1 in
35 GPM
5 GPM
HFB-2-05
TWD23,317 / each
Available
in 6 weeks
Brass
240 °F
1/2 in
5 GPM
0.5 GPM
HFB-3-15
TWD35,015 / each
Available
in 7 weeks
Brass
240 °F
3/4 in
15 GPM
2 GPM
HFB-3-20
TWD36,503 / each
Available
in 10 weeks
Brass
240 °F
3/4 in
20 GPM
2 GPM
HFB-5-50
TWD108,633 / each
Available
in 10 weeks
Brass
240 °F
1 1/2 in
50 GPM
5 GPM
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Custom Mini-Master® Flowmeters for Gas/Liquid, High Chemical Resistance

Discover the Custom Mini-Master® Flowmeters, designed for gas and liquid applications. Durable, chemical-resistant construction ensures easy cleaning and precise readings.

Product Number Gas Flow, Max Liquid Flow, Max Scale Length Scale Media Calibration Valve Type
MMA-22
TWD2,653 / each
Available
in 5 weeks
0 m³/s
5 l/min
2 in
Water
N/A
MMA-2
TWD2,766 / each
Available
in 5 weeks
1.2 SCFH
0 m³/s
2 in
Air @ 1 atm
N/A
MMA-4
TWD2,766 / each
Available
in 5 weeks
5 SCFH
0 m³/s
2 in
Air @ 1 atm
N/A
MMA-5
TWD2,766 / each
Available
in 5 weeks
10 SCFH
0 m³/s
2 in
Air @ 1 atm
N/A
MMA-6
TWD2,766 / each
Available
in 5 weeks
20 SCFH
0 m³/s
2 in
Air @ 1 atm
N/A
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Variable Area Flow Meters With Capacities: 0.5 to 200 GPM of Water

OMEGA's FL-75 flowmeters combine shatter resistant, non-glass construction and laboratory precision accuracy at an economical price. With Capacities: 0.5 to 200 GPM of Water

Product Number Process Connection Size Process Connection Type Water Flow, Max
FL-75K
TWD42,605 / each
Available
in 5 weeks
2 in
NPT Female
60 GPM
FL-75P
TWD42,607 / each
Available
in 5 weeks
2 in
NPT Female
200 GPM
Flowmeter for Liquids, ± 2% Accuracy, Metal, 3000 psig, 1/4\" to 1\" Conn.

The Series DTFW Flowmeter for Liquids offers ±2% accuracy with durable metal construction, suitable for pressures up to 3000 psig. Available in various connection sizes.

Product Number Material Construction Option Process Connection Size Volumetric Flow Rate, Max
DTFW-1S-5W
TWD40,334 / each
Available
in 9 weeks
316 Stainless Steel
1/4 in
5 GPM
DTFW-2B-5W
TWD28,714 / each
Available
in 9 weeks
Brass
1/2 in
5 GPM
DTFW-2S-1W
TWD39,719 / each
Available
in 9 weeks
316 Stainless Steel
1/2 in
1 GPM
DTFW-2S-2W
TWD39,719 / each
Available
in 9 weeks
316 Stainless Steel
1/2 in
2 GPM
DTFW-2B-10W
TWD28,714 / each
Available
in 9 weeks
Brass
1/2 in
10 GPM
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In-line Variable Area Flow Meter With Limit Switches

OMEGA's in-line flowmeters offer high accuracy flow rate indication for oil, water or air and the ability to either control the flowrate or alarm on high or low flowrates.

Product Number Air Flow, Max Scale Media Calibration Switch Type Water Flow, Max
FL-6102B
TWD26,818 / each
Available
in 6 weeks
0 m³/s
Oil
SPDT NO/NC, Selectable
2 GPM
FL-6318B
TWD29,862 / each
Available
in 6 weeks
0 m³/s
Water
SPDT NO/NC, Selectable
2 GPM
FL-7605B
TWD32,350 / each
Available
in 4 weeks
0 m³/s
Oil
SPDT NO/NC, Selectable
5 GPM
FL-7625B
TWD32,350 / each
Available
in 4 weeks
0 m³/s
Oil
SPDT NO/NC, Selectable
30 GPM
FL-6304B-R2
TWD33,729 / each
Available
in 8 weeks
0 m³/s
Water
(2) SPDT
5 GPM
Variable Area Flowmeters for Gas & Liquid – Universal Scale, 6-Turn Valve

Variable Area Glass Flowmeters feature clear scales and are suitable for measuring carrier gases, liquids, and gas in pilot plants and process flows.

Product Number Gas Flow, Max Liquid Flow, Max Material Construction Option Scale Length Valve Type
VA12418
TWD21,422 / each
Available
in 11 weeks
25.5 SCFH
5.77 gal/h
Stainless Steel
65 mm
6-Turn Needle Valve
VA1043
TWD10,007 / each
Available
in 11 weeks
0.104 SCFH
0.009 gal/h
Aluminum
65 mm
6-Turn Needle Valve
VA1044
TWD9,827 / each
Available
in 11 weeks
0.307 SCFH
0.038 gal/h
Aluminum
65 mm
6-Turn Needle Valve
VA1045
TWD9,827 / each
Available
in 11 weeks
0.22 SCFH
0.028 gal/h
Aluminum
65 mm
6-Turn Needle Valve
VA1046
TWD10,007 / each
Available
in 7 weeks
0.633 SCFH
0.122 gal/h
Aluminum
65 mm
6-Turn Needle Valve
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Variable Area Flow Meters

Variable Area Flow Meters support flow measurement, switching, control, or ...

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