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FL4200-4600-Series
OEM Style Acrylic Variable Area Flow Meters
Models In Stock
- 50 mm, 75 mm, 127 mm, and 250 mm (1.97', 2.96', 5' and 9.85') Scale Lengths
- Floats Are Rod-Guided in Most Models
- Metering Valves Available
- Rear Inserts Provided for Panel Mounting
FL4200-4600-Series
From
C$
136.73
Models In Stock
Product Overview
- Mounting Panel Mount
- Mounting Orientation Panel Mount
- Scale Direct Read
- Series ID FL4200-4600-Series
Supported Applications
The Omega FL4200–4600 Series consists of OEM-style acrylic variable area flow meters designed for measuring the flow rate of water and air. These units are precisely machined from solid acrylic blocks and feature direct-reading scales calibrated for specific media ranges.
- Water: 6.5 GPH to 20 GPM
- Air: 2 SCFH to 40 SCFM
Operating Conditions & Performance
The series is rated for specific process temperatures and pressures depending on the media type:
- Air Process Temperature: 21°C (70°F) to 38°C (100°F) at 0 psig
- Water Process Temperature: 21°C (70°F) to 54°C (130°F) at 0 psig
Pressure ratings are defined as follows:
- Air: 100 psig @ 21°C (70°F)
- Water: 125 psig @ 21°C (70°F)
The minimum flow rate is specified as 10% of the maximum flow rate listed for each model. Accuracy and repeatability vary by series family:
- FL4200: 6/2%
- FL4300 and FL4400: 4/1%
- FL4500: 3/12%
- FL4600: 2/12%
Configuration Options
The series supports a range of configurations including scale lengths, process connections, and optional features. Scale lengths are available in 50, 75, 127, and 250 mm (1.97, 2.96, 5, and 9.85").
Process Connections
- FL4200: ¼ FNPT
- FL4300 and FL-4500: ¼ FNPT x ½ MNPT
- FL4400: 1 MNPT
- FL4600: ½ FNPT
Wetted Materials
- Acrylic tube
- 316 SS float and guide rod (no guide rod for FL4211 through FL4215 air meters)
- PVC end fittings (brass on FL4200 Series)
- EPR O-rings
Options & Accessories
- Metering Valves: Available by adding suffix 'V' to the model number.
- Rear Inserts: Provided for panel mounting; FL4200 requires ¼" holes drilled through the panel due to ⅜" hex lock nuts around ports.
- Calibration Certificates: Optional NIST calibration certificate available (add 'NIST 5PT' or 'NIST 10PT' to model number).
- Warranty & Compliance: Optional 1 YEAR WARRANTY and RoHS compliance options are offered.
Key Product Differences
The series is divided into five distinct families (FL4200, FL4300, FL4400, FL4500, FL4600), each with specific dimensional profiles and performance characteristics. The model number guide follows the format: FL4000 - - - . For example, FL4303-V denotes an acrylic variable area flow meter with a 3.5 GPM flow rate and valve option.
- FL4200 Series features PVC end fittings (brass on this series) and specific mounting requirements for panel installation.
- Floats are rod-guided in most models, except for the FL4211 through FL4215 air meters which do not include a guide rod.
Show Ratings & Reviews
Rated 4 out of
5
by
beerme from
greetings earthling
the flowmeter works well for our application and is of sturdy construction. the needle valve gives fine control of flowrate.
Date published: 2016-02-09
Rated 5 out of
5
by
AlejoCL from
A+++ quality
I have a lot of flow meters including chinese and american models, the quality of Omega is greater than all of them. Even the box of the product is more atractive and have a very good presentation.
Date published: 2017-05-23
Rated 5 out of
5
by
mikew from
Simple and bullet proof
We use these in several places and they work well.
Date published: 2016-07-21
Rated 4 out of
5
by
Calibr8tor from
As Advertised
Simple yet effective. A value when measurement uncertainty is not important.
Date published: 2016-05-17
Rated 4 out of
5
by
Brian M from
Good quality for the price
Well built meter for general purpose, good value for price point
Date published: 2023-08-27
Rated 4 out of
5
by
Kevin K in SC from
Fits the purpose
Looks to be able to do the job. Shipped quickly which is what I needed.
Date published: 2022-11-07
Rated 4 out of
5
by
andres from
rotametro
I wil happy becouse excelent product and couality
ty
Date published: 2016-03-07
What is the best rotometer to use for ozone gas
Thank you for your inquiry. In order to select the best meter for your application we will need your complete application conditions. Please send your process conditions (ie flow rate range, temperature, pressure and media type) to flow@omega.com and our Flow Engineering team can help you select a product for your application.
Date published: 2019-10-29
Does the FL4513-V flowmeter have 1/4" NPT female AND 1/2" NPT male Input connections. The website shows the 1/4" NPT F. Most of these style flowmeters have a smaller Female thread on the inside and a larger Male thread on the outside of the Input Ports.
Thank you for your inquiry! The FL4513-V will has both 1/4" FNPT and 1/2" male NPT connection sizes.
Date published: 2021-12-13
can this type of flowmeter be used for oxygen and propane
Thank you for your inquiry! These flow meters can be used for a variety of different gases including oxygen and propane. Since these models are scaled for air, the readings will have to be corrected by factoring in the specific gravity of the other gases.
Date published: 2022-10-19