The HMZ M Series Positive Displacement Flow Meter is a high-accuracy mechanical flow meter designed for reliable liquid measurement in fuel transfer, petroleum distribution, and industrial process control applications. It is suitable for measuring diesel, gasoline, kerosene, fuel oil, lubricating oil, and other compatible non-corrosive liquids.
With a robust positive displacement measuring structure, the HMZ M Series provides stable accuracy, excellent repeatability, and long service life under demanding working conditions. It is widely used in fuel depots, oil terminals, fuel tank trucks, skid-mounted refueling systems, heavy-duty dispensing systems, and bulk liquid loading or unloading stations.
HMZ offers multiple model sizes and flexible configuration options to meet different flow rates, installation, and application requirements.
The HMZ M Series Positive Displacement Flow Meter is designed to measure liquid flow by separating the fluid into precise, repeatable measuring chambers. During operation, the internal rotors rotate in synchronization, allowing a fixed volume of liquid to pass through the meter during each cycle. This mechanical metering principle helps ensure accurate and repeatable volume measurement, even in demanding fuel transfer environments.
Compared with general flow measurement devices, positive displacement flow meters are especially suitable for applications where accurate custody transfer, batch delivery, inventory control, and stable field operation are required. The HMZ M Series can be installed as a single flow meter or integrated with accessories such as a mechanical register, an electronic register, an air eliminator, a strainer, a pulser, a preset valve, and a printer.
The HMZ M Series Flow Meter is suitable for a wide range of fuel transfer and liquid metering applications, including:
For fuel station projects, the HMZ M Series can be used together with fuel dispensers, pumps, valves, strainers, air eliminators, and control systems to form a complete fuel transfer and metering solution.
The HMZ M Series uses a positive displacement measuring structure to deliver accurate and repeatable liquid measurement. It is suitable for applications where fuel volume calculation, delivery accuracy, and operational reliability are important.
The meter is built with a strong mechanical structure for long-term field use. Its internal measuring components are designed to maintain stable operation under continuous liquid transfer conditions.
According to different application requirements, the HMZ M Series can be supplied with a mechanical register, an electronic register, a pulser, an air eliminator, a strainer, a preset valve, or a printer. This makes it suitable for both simple fuel transfer systems and more complete metering assemblies.
HMZ provides different model sizes from 40mm to 150mm, covering low, medium, and high flow rate applications. Customers can select the proper model according to pipe size, required flow rate, liquid type, and system pressure.
The HMZ M Series is especially suitable for petroleum product transfer, fuel delivery trucks, skid-mounted refueling stations, and oil depot loading systems. It can help improve metering accuracy, reduce operating errors, and support more efficient fuel management.
| Model | Size | Flow Range | Max. Pressure | Standard Unit | Repeatability |
|---|---|---|---|---|---|
| HMZ M-40 | 1.5 inch / 40mm | 25–250 L/min | 10 Bar | Liter / US Gallon | 0.05% |
| HMZ M-50 | 2 inch / 50mm | 38–380 L/min | 10 Bar | Liter / US Gallon | 0.05% |
| HMZ M-80 | 3 inch / 80mm | 75–750 L/min | 10 Bar | Liter / US Gallon | 0.05% |
| HMZ M-100 | 4 inch / 100mm | 130–1300 L/min | 10 Bar | Liter / US Gallon | 0.05% |
| HMZ M-150 | 6 inch / 150mm | 225–2250 L/min | 10 Bar | Liter / US Gallon | 0.05% |
Connection Options: ANSI, NPT, BSPF
Strainer Mesh: 80 mesh for diesel, 40 mesh for gasoline
Applicable Liquids: Diesel, gasoline, kerosene, fuel oil, lubricating oil, and compatible petroleum-based liquids
Optional Accessories: Mechanical register, electronic register, air eliminator, strainer, preset valve, pulser, printer
Note: Final specifications may vary according to model configuration, liquid type, and project requirements. Please contact HMZ for detailed technical confirmation before ordering.
The HMZ M Series Flow Meter can be supplied with different accessories according to the working conditions and metering system design.
A mechanical register provides direct volume reading and is suitable for simple and reliable field operation without complicated electronic control.
An electronic register can provide digital display and signal output functions for more advanced fuel transfer and control systems.
The air eliminator helps remove air or vapor from the liquid before it enters the measuring chamber, improving metering stability and accuracy.
The strainer helps protect the flow meter from foreign particles, welding slag, and other impurities in the pipeline. It is recommended for most fuel transfer systems.
A preset valve can be used for batch delivery applications where a fixed volume of liquid needs to be controlled during loading or dispensing.
A pulser can provide signal output for remote monitoring, electronic counting, or integration with control systems.
A printer can be used in fuel delivery and custody transfer applications where delivery records or transaction documents are required.
The HMZ M Series operates on the positive displacement measuring principle. When liquid flows through the meter body, the internal rotors divide the liquid into fixed volumes and transfer these measured volumes from the inlet side to the outlet side. Each rotation represents a precise amount of liquid, and the total volume is calculated through the register or signal output device.
This working principle makes the HMZ M Series suitable for applications requiring stable volume measurement, especially in fuel transfer, oil loading, batch delivery, and inventory control systems.
To ensure stable performance and long service life, proper installation and operation are important.
HMZ provides fuel station equipment and fuel transfer solutions for customers in different markets. Our product range includes fuel dispensers, flow meters, pumps, valves, skid-mounted refueling stations, fuel storage systems, and related accessories.
For flow meter projects, HMZ can help customers select suitable models according to flow rate, pipe size, liquid type, installation method, and project requirements. We can also provide matched accessories and technical support for complete fuel transfer systems.
To select the proper HMZ M Series Flow Meter, please confirm the following information:
If you are not sure which model is suitable, HMZ can recommend the proper flow meter based on your project information.
The HMZ M Series is suitable for diesel, gasoline, kerosene, fuel oil, lubricating oil, and other compatible petroleum-based liquids. For special liquids, please confirm material compatibility with HMZ before ordering.
Yes. The HMZ M Series can be used for fuel tank trucks, mobile fuel delivery vehicles, and bulk fuel loading or unloading systems.
Yes. The HMZ M Series is suitable for skid-mounted mobile refueling stations and can be integrated with pumps, valves, strainers, air eliminators, and fuel dispensing systems.
HMZ can supply a mechanical register, an electronic register, an air eliminator, a strainer, preset valve, pulser, and a printer according to customer requirements.
The right model depends on the required flow rate, pipe size, working pressure, liquid type, and installation method. You can send your project details to HMZ, and our team will help recommend a suitable model.
Yes. The HMZ M Series includes different model sizes from 40mm to 150mm, covering both medium-flow and high-flow fuel transfer applications.
If you need a reliable positive displacement flow meter for your fuel transfer system, fuel truck, oil depot, or skid-mounted refueling project, contact HMZ for model selection and technical support.
HMZ can provide suitable flow meter models and matched accessories according to your project requirements.
Contact HMZ today to get a quotation and technical recommendation for your fuel metering system.
We’ll reply within 1 business day. Please check for emails from an ‘@gmail.com‘ address.
