variable area Flowmeter
Industrial Metal Tube Rotameters for Demanding Applications
Reliable variable-area flow measurement for liquids, gases, and steam.
HBYB metal tube rotameters are designed for corrosive media, high-temperature processes, and hazardous areas. With flexible wetted material options and industrial-grade construction, they are built to support long-term operation where reliability matters most.
Request for QuoteTechnical Consultation
Technology Selection
Is Metal Tube Rotameter Right for Your Application?
Metal tube rotameters offer something no electronic meter can match — reliable, low-maintenance flow measurement with no power requirement and no moving parts to fail. But like any technology, they perform best within a defined set of conditions.
Metal Tube Rotameter Excels Here
Your medium is liquid, gas, or steam with no solid content or particulates
Your fluid is corrosive, toxic, or otherwise incompatible with glass wetted components
Your installation environment is hazardous or explosion-proof certification is required
Your flow rate is low to moderate and measurement conditions are relatively stable
Your application demands local visual indication without external power supply
Long service intervals and minimal maintenance requirements are operationally important
Consider alternatives instead
Your fluid contains particulates, fibres, or entrained gas bubbles that interfere with float position
Your process involves highly viscous media where float drag introduces significant measurement error
Your flow rate varies rapidly and fast dynamic response is required
Accuracy requirements are tighter than ±1.5% and a certified custody-transfer grade is needed
Your process demands real-time diagnostics, data logging, or integration with a digital control system
Your pipe diameter exceeds DN150 and a full-bore design is necessary
Not sure whether metal tube rotameter fits your application?
Share your medium, operating conditions, flow range, and installation details —our engineers will confirm whether a metal tube rotameter is the right choice for your process and operating conditions.
Request Selection Help
Find Your Installation Match
Explore our Rotameter series
Built on proven variable-area principles, our rotameters deliver consistent, easy-to-read flow monitoring without the need for power or complex infrastructure. Designed for liquids, gases, and utility services, they offer a practical and durable solution for continuous process oversight.
Vertical Type Metal Tube Rotameter
Inquiry Now
Bottom-in Side-out Metal Tube Rotameter
Inquiry Now
Side-in Side-out Metal Tube Rotameter
Inquiry Now
Threaded Micro-Flow Metal Tube Rotameter
Inquiry Now
Field-Indication Vertical Metal Tube Rotameter
Inquiry Now
Side-in Top-out Metal Tube Rotameter
Inquiry Now
Side-in Side-out Rotameter with Limit Alarm
Inquiry Now
Corrosion-Resistant Vertical Metal Tube Rotameter
Inquiry NowCustomized solutions designed for your unique application needs
Need a custom-engineered flow meter that’s accurate, reliable, and repeatable? Let’s talk
Our specialist team has 22+ years’ experience in designing and manufacturing rotameters, whether it’s customizing the design, flow range, special features, or unique materials, we have the expertise and can provide the optimal solutions to perfectly meet your application needs!
Proven across demanding process industries.
Where Metal Tube Rotameters Perform Best
From corrosive dosing lines to high-temperature utility systems, metal tube rotameters are widely used where durability, media compatibility, and reliable local indication matter most.
Oil & Gas industry
- Burner station gas meteringChemical injection monitoringProduced water measurementRefinery process media measurementUtility flow confirmation
Chemical & Petrochemical Industry
- Reactant dosing in process linesSolvent flow monitoringAAcid and alkali measurementCorrosive media flow indicationBatch reagent addition
Power Generation industry
- Boiler water chemical dosingCooling water line monitoringFuel oil flow measurementUtility process monitoringHigh-temperature flow service
Pharmaceutical & Fine Chemical
- Active ingredient dosingBatch synthesis flow monitoringSynthesis process monitoringFine chemical utility meteringCleaning process monitoring
Water Treatment & Environmental
- Chemical dosing for disinfectionpH adjustment chemical feedPolymer feed monitoringEffluent treatment dosingContinuous low-flow monitoring
Metallurgy & Steel industry
- Utility process monitoringFurnace process gas monitoringHigh-temperature process linesFluid distribution flow monitoringHigh-temperature flow service
Excellent Performance Starts in Design
A metal tube rotameter that performs reliably in industrial service depends on more than assembly quality. It requires focused development work in flow geometry, magnetic coupling, material behavior, and thermal-pressure design — the technical areas where real-world measurement performance is won or lost.
Float & Cone Geometry Development
We refine float profile, cone taper, and internal flow geometry to improve vertical stability, linearity, and repeatable indication across the full measuring range, especially at lower flow rates
Magnetic Coupling Engineering
We focus on magnetic coupling geometry, transmission stability, and resistance to temperature variation and external interference, ensuring reliable non-contact indication through the metal tube wall.
Chemical Compatibility Design
Our wetted material development considers not only corrosion resistance, but also how temperature, pressure, and long-term fluid exposure affect liner behavior, metal stability, and service reliability.
Extreme Condition Design
We develop structures that account for thermal expansion, pressure loading, and assembly stability, helping maintain dependable operation in high-temperature and high-pressure measurement applications.
Precision Built for Industrial Reliability
From Production to Calibration, Quality Is Built In
The reliability of metal tube rotameter is determined not only by its design, but by how well it is built, checked, and calibrated. Our integrated in-house process helps ensure each unit is built consistently, verified carefully, and delivered with greater confidence in accuracy, durability, and long-term operating stability.
- Float and cone dimensional inspection
- Float mass and buoyancy characteristic verification
- Float positioning linearity and repeatability verification
- Pressure rating and seal integrity hydrostatic testing
- Multi-point wet flow calibration
Installation and Application Cases
Field-Proven Across Real Industrial Applications
Explore real installation examples across multiple industries, showing how our metal tube rotameters are used to solve demanding flow measurement challenges in actual operating conditions.
Ready to take Your next step?
Turn Process Requirements into the Right Specification
Industrial instrumentation decisions don't happen in a single session. These three paths move you from evaluation to confidence — without committing to a purchase.
Get Help with Specification
Not sure which model, material, or configuration is right for your process? Share your operating conditions and our engineers will help you narrow the selection before quotation.
Request Selection HelpSubmit Application Conditions
Share your medium type, pipe diameter, and flow range. Our engineering team will review your process conditions and provide an optimized technical recommendation within 24 hours.
Get Technical ConsultationSpeak with Our Engineers
Connect directly with our senior flow measurement experts for complex applications. We provide 24-hour technical support to solve your most challenging fluid measurement problems.
- info@hbmeter.cc
- +86 152 3780 0315
