All components of the stainless steel oval gear flow meter are made of stainless steel. It is widely used for metering highly corrosive liquid media such as acids, alkalis, salts, and organic compounds. Of course, it is also an ideal flow meter for hygienic applications!
Sino-Inst’s stainless steel oval gear flow meters can be customized with options including 304 stainless steel, 316 stainless steel, high pressure (6.3 MPa), high temperature (280℃), mechanical display, digital display, pulse output, and 4-20mA signal output.
| Diameter | DN10～DN200 |
| Accuracy | Class 0.5 or 0.2 |
| Temp. range | -20℃-+280℃ |
| Pressure | 1.0MPa、1.6MPa、2.5MPa、4.0MPa、6.4MPa |
| Measured medium viscosity | 200~3000mpa.s |
| Explosion-proof | iaⅡCT5,dⅡBT4 |
Features
- Made entirely of stainless steel, it is corrosion-resistant;
- The all-stainless steel construction meets the requirements of hygiene-sensitive industries such as food and medical;
- High measurement accuracy, up to 0.5% and 0.2%;
- Insensitive to changes in the viscosity of the measured liquid, especially suitable for measuring high-viscosity liquids;
- Easy installation, no straight pipe section required before the meter;
- Available in diameters from 10 to 200 mm;
- Viscosity range up to 3000 CP;
- Pressure rating up to 6.3 MPa;
- Temperature rating up to -20 to 280°C.
Mechanical or Digital – Customizable
Modern process control demands more than just mechanical dials. Our 4-20mA flow transmitters integrate seamlessly with PLC and DCS systems.
- Mechanical display: Simple accumulator, no power required.
- Pulse output: Raw signal for external counters or batch controllers.
- Analog and digital outputs: 4-20mA, HART, and Modbus RS485 for intelligent monitoring.
Process Connections – Customizable
Installation flexibility is crucial. We offer a variety of connection types to suit different piping standards:
- Flange connections: Compliant with ANSI, DIN, or JIS standards, ensuring reliable industrial connections.
- Threaded connections: BSP or NPT threads, suitable for small, compact piping.
- Tri-clamp connections: Ideal for hygienic flow meter applications in the food and pharmaceutical industries.
This flow meter is a truly high-viscosity flow meter with exceptional performance, capable of handling a wide range of media from thin solvents to thick resins without recalibration.
Stainless Steel Oval Gear Flow Meter Specifications
- Main component materials and nominal pressure:
| Housing | Front cover | Rear cover | Cover plate | Oval Gear | Shaft | Shaft sleeve | Nominal pressure |
| Stainless steel | Stainless steel | Stainless steel | Stainless steel | Stainless steel | Stainless steel | il-impregnated bronze rolling bearing | 1.6（MPa）、2.5MPa、4.0MPa、6.4MPa |
- Accuracy class: 0.5 class, 0.2 class (for general media temperatures between -10℃ and +60℃).
- Operating media temperature: (Ambient temperature can be -10℃ to +60℃). -10℃ to +60℃; with high-temperature adjustment and a high-temperature heat dissipation tube, it can reach 60℃ to 200℃.
- Remote display and field explosion-proof rating: ExiaⅡCT5, dⅡBT4.
5. The flow range is as follows:
| Nominal diameter | Viscosity of the tested liquid mPa.s | |||||||
| 0.3～0.8 | 0.8～2 | 2～200 | 200～1000 | 1000～2000 | ||||
| 10 | 0.2-0.5 | 0.12-0.5 | 0.08-0.5 | 0.08-0.5 | 0.05-0.5 | 0.06-0.3 | 0.03-0.3 | 0.03-0.2 |
| 15 | 0.75-1.5 | 0.5～1.5 | 0.3-1.5 | 0.3-1.5 | 0.15-1.5 0.3-3 | 0.2-1.0 | 0.1-1.05 | 0.07-0.75 |
| 20 | 1.5-3 | 1-3 | 0.5-3 | 0.5-3 | 0.3-3 1.5-15 | 0.4-2.1 | 0.2-2.1 | 0.15-1.5 |
| 25 | 3-6 | 2-6 | 1-6 | 1-6 | 0.6-6 1.56-15 | 0.8-4.2 | 0.4-4.2 | 0.3-3 |
| 40 | 7.5-15 | 5-15 | 2.5-15 | 2.5-15 | 1.5-15 | 2.1-10.5 | 1.0-10.5 | 0.7-7.5 |
| 50 | 8-24 | 8-24 | 4.8-24 | 4.8-24 | 2.4-24 | 2.4-16.8 | 1.6-16.8 | 1.2-12 |
| 65 | 20-40 | 15-40 | 8-40 | 8-40 | 4-40 | 5.6-28 | 2.8-28 | 2-20 |
| 80 | 30-60 | 20-60 | 12-60 | 12-60 | 6-60 | 8.4-42 | 4.2-42 | 3-30 |
| 100 | 50-100 | 34-100 | 20-100 | 20-100 | 10-100 | 14-70 | 6-70 | 5-50 |
| 150 | 95-190 | 64-190 | 38-190 | 38-190 | 19-190 | 26.6-133 | 13.3-133 | 9.5-95 |
| 200 | 170-340 | 114-340 | 56-340 | 56-340 | 34-340 | 47.6-238 | 23.8-238 | 17-170 |
| Accuracy class | 0.5 | 0.2 | 0.5 | 0.2 | 0.5 | 0.2 | 0.5 | 0.5 |
Note 1: When the measured liquid temperature exceeds 80℃, the maximum flow rate of the flow meter is 90% of its original maximum flow rate, and the minimum flow rate should be 120% of the original minimum flow rate.
Note 2: When the viscosity of the measured liquid exceeds 2000 mPa.s, please consult before ordering.
Order Guide
In addition to regular products, we support customization and OEM.
| SI-3603 | Description | |||||||||
| Housing material | NA | Cast iron | ||||||||
| NE | Cast steel | |||||||||
| NB | Stainless steel | |||||||||
| Diameter | DNX | DN10~DN200（mm） | ||||||||
| Working Pressure | 1 | 1.0MPa | ||||||||
| 2 | 1.6MPa | |||||||||
| 3 | 2.5MPa | |||||||||
| 4 | 4.0MPa | |||||||||
| 6 | 6.4MPa | |||||||||
| Accuracy | A | 0.2 | ||||||||
| B | 0.5 | |||||||||
| Connection | 1 | Flange | ||||||||
| 2 | Thread | |||||||||
| Output | L0 | Pulse | ||||||||
| L1 | 4-20mA | |||||||||
| Communication | R | RS485 | ||||||||
| N | / | |||||||||
| Display | 1 | Pointer | ||||||||
| 2 | LCD | |||||||||
| Explosion-proof | H | iaⅡCT5 | ||||||||
| G | dⅡBT4 | |||||||||
Common Applications for Stainless Steel Oval Gear Flow Meters
When dealing with tough industrial environments, the Stainless Steel Oval Gear Flow Meter is often the only reliable choice. Since these devices don’t rely on flow velocity, they excel in scenarios where other meters struggle, particularly with thick or aggressive fluids. We see these meters deployed across industries that demand durability and high accuracy.
Chemical Processing
This is where corrosive liquid flow measurement matters most. We use 316L stainless steel flow meters to handle harsh acids, solvents, and concentrated detergents that would eat through aluminum or cast iron bodies. The material compatibility ensures the sensor lasts longer without leaching contaminants into the process.
Oil and Fuel Transfer
As a robust fuel oil flow meter, this device handles everything from diesel to heavy lubricating oils and hydraulic fluids. The high viscosity flow meter design ensures accurate readings even when the temperature drops and the oil gets thick, making it ideal for engine test benches and fuel monitoring systems.
Food and Beverage
For sanitary applications, we often configure these as hygienic flow meters with tri-clamp connections. They are perfect for viscous edibles like syrups, honey, molasses, and vegetable oils. The positive displacement flow meter mechanism moves these sticky fluids efficiently without the slippage you might see in turbine meters.
Pharmaceuticals and Custody Transfer
When every drop counts, the high precision of the oval gear meter principle is critical. It is widely used for precise batching and dosing of expensive pharmaceutical ingredients and petroleum products where repeatability is non-negotiable.
More About Oval Gear Flow Meter Working Principle
Oval gear flowmeter (also known as displacement flowmeter, gear flowmeter) is a kind of positive displacement flowmeter, and it is a kind of high precision in flowmeter.
As shown, it uses a mechanical measuring element to continuously divide the fluid into a known volume portion. And measures the total flow rate based on the number of consecutive fillings and discharges of the volume portion of fluid in the metering chamber.
As shown in the picture, the oval gear flowmeter in the picture can be made of different materials (cast iron, cast steel, 304 stainless steel, 316 stainless steel). And it is suitable for flow measurement in chemical industry, petroleum, pharmaceutical, electric power, metallurgy and food industry.
Oval Gear Flow Meters consist of a metering box and a pair of oval gears installed in the metering box. The upper and lower cover plates form a sealed crescent-shaped cavity. Due to the rotation of the gears, it is not absolutely sealed.
When the measured liquid enters the flow meter through the pipeline, the pressure difference generated at the inlet and outlet drives a pair of gears to rotate continuously. The liquid measured by the lunar cavity is continuously delivered to the outlet. As shown in the figure, the quadruple product of the quadratic displacement is the total amount of liquid flow measured.
The flowmeter is mainly composed of a casing, a counter, an oval gear and a coupling (electromagnetic coupling and axial coupling).
FAQ
Is stainless steel suitable for corrosive acids?
Yes, but proper material selection depends on the specific chemical. Our 316L stainless steel flow meter models are engineered to be acid resistant flow meters for a wide range of aggressive media, including nitric acid, solvents, and caustic solutions.
What output signals are available?
We understand that modern facilities need seamless data integration. While we offer simple mechanical counters for standalone use, most industrial applications require specific electronic outputs.
Standard: Pulse output flow meter signals (Hall effect or Reed switch) for totalizing.
Analog: 4-20mA oval gear transmitter options for direct connection to a PLC or DCS.
Digital: Modbus RS485 and HART protocols are available for advanced remote monitoring and batch control systems.
What is the price of an oval gear flow meter?
The price of oval gear flow meters varies depending on the specifications. The main factors are: size, material, temperature, pressure, viscosity, display method, and signal output.
Sino-Inst offers oval gear flow meters at the best prices. The following price and specifications are for your reference:
Oval Gear Flow Meter
DN65
Measuring Medium: Water
Flow Range: 10-40 m³/h
Normal Temperature and Pressure
Mechanical Type
Flange Connection
Stainless Steel Material
Accuracy: 0.5%
FOB Price: USD1750.00/set
Technical Support
At Sino-Inst, we have supported numerous factories in upgrading their flow measurement systems. Whether you are measuring corrosive chemicals or high-viscosity fluids such as heavy oil, resins, or molasses, our stainless steel oval gear flow meters provide stable, high-precision measurements.
A chemical plant in Indonesia recently replaced their frequently malfunctioning turbine flow meters with our stainless steel flow meters for measuring corrosive solvents. This replacement eliminated frequent maintenance and improved batch metering accuracy by 15%. Similarly, a US food manufacturer now relies on our sanitary clamp-type flow meters for accurate syrup metering, ensuring consistent product quality in every production run.
If you are planning to install or replace stainless steel oval gear flow meters, please feel free to contact us for customization!
Stainless Steel Oval Gear Flow Meter | Best Price Sino-Inst
All components of the stainless steel oval gear flow meter are made of stainless steel. It is widely used for metering highly corrosive liquid media such as acids, alkalis, salts, and organic compounds. Of course, it is also an ideal flow meter for hygienic applications!
Product SKU: SI-3603 Stainless Steel Oval Gear Flow Meter
Product Brand: Sino-Inst
Product In-Stock: InStock
5