What are the parts of a gas dispenser?

What Are the Parts of a Gas Dispenser?

As the core equipment of a gas station, a gas dispenser relies on the coordinated operation of multiple precision components to ensure the safe, accurate, and efficient refueling of vehicles. Understanding the function of these key parts not only helps in comprehending their working principles but also highlights the importance of high-quality accessories. The following is a detailed analysis of the main components of a gas dispenser:

1. Fuel nozzle The Fuel nozzle is the terminal component that the user directly operates to dispense fuel into a vehicle's tank. It is more than a simple switch; it typically integrates a sophisticated automatic shut-off mechanism. When the tank is full, the fuel covers a small sensing port at the tip of the spout, causing a pressure change that triggers an internal mechanism to automatically cut off the fuel flow, effectively preventing spills and ensuring safety.

Jiahao's Advantage: Wenzhou Jiahao Petroleum Machinery Co., Ltd is a leading manufacturer of high-quality fuel nozzles. Its JH-A Series Automatic Nozzles are renowned for their excellent ergonomic design, durable construction, and high sensitivity. The automatic shut-off valve in a Jiahao nozzle is tested for tens of thousands of cycles to ensure it closes precisely and rapidly at various flow rates, minimizing fuel drips and safety hazards, thus providing reliable protection for the gas station.

2. Meter The meter is the heart of the fuel dispenser, responsible for accurately measuring the volume of fuel dispensed, which is the direct basis for billing. Modern dispensers commonly use high-precision piston or rotary vane meters, which must maintain stable accuracy under various temperatures and pressures to ensure fairness for both the customer and the station operator.

Jiahao's Advantage: Wenzhou Jiahao's JH-FM Series High-Precision Flow meters are built with high-quality, wear-resistant materials and precision engineering to guarantee an extremely low error rate and excellent long-term stability. Their unique design reduces internal friction and wear and effectively resists corrosion from different fuel additives. Even after extended periods of heavy use, they maintain their initial accuracy, providing a solid foundation for precise station operations.

3. Submersible Pump The submersible pump is the core of a modern gas station's fuel delivery system. It is installed directly inside the underground storage tank and "pushes" fuel to the dispensers. Compared to traditional "suction" systems, this "push" method offers higher efficiency, more stable fuel supply, and the effective elimination of vapor lock. A powerful submersible pump system is fundamental to ensuring the efficient and stable operation of the entire station.

Jiahao's Advantage: To meet the diverse needs of different types and scales of gas stations worldwide, Wenzhou Jiahao offers a comprehensive series of high-performance submersible pumps.
- Multiple Power Options: Jiahao's submersible pumps are available in a wide range of sizes and power ratings, from 0.75hp, 1.5hp, and 2.0hp up to 3.0hp and 5.0hp. This means that whether for a small, privately-owned station or a large highway service area, customers can select the perfect pump model to match their needs, ensuring optimal energy efficiency while meeting the demand of multiple nozzles operating simultaneously.
- Support for Different Media: Through specialized design and material optimization, Jiahao offers professional models suitable for various media, including Gasoline, Diesel, and Urea (AdBlue/DEF). Specifically for the highly corrosive nature of urea, Jiahao uses special corrosion-resistant materials to ensure the pump's long-term stable operation, providing customers with a complete, one-stop solution.

4. Hose The hose is the flexible conduit that connects the main body of the dispenser to the fuel nozzle. It must be highly flexible for ease of use while also being able to withstand the chemical corrosion of fuel, high pressure, and various harsh outdoor weather conditions (such as UV radiation and extreme temperatures).

Jiahao's Advantage: Wenzhou Jiahao provides high-quality fuel hoses with a multi-layer composite structure. The inner layer is oil-resistant and anti-corrosive, the middle layer is woven with high-strength steel wire or fiber for excellent pressure and tensile strength, and the outer layer is wear-resistant and anti-aging. This ensures the hose is not only durable but also resistant to deformation or cracking over long-term use, guaranteeing the safety of fuel transport.

5. Display The display is the user interface of the dispenser, used to clearly show the price per unit, the volume of fuel dispensed, and the total cost. From early mechanical wheel displays to the now-common LCD or LED electronic screens, the purpose is to provide customers with intuitive and accurate billing information.

6. Control Module The control module is the "brain" of the dispenser. This electronic unit processes pulse signals from the meter, calculates the price, controls the display screen, and communicates with the station's payment systems (such as IC cards or mobile payment terminals). It is the core for achieving automated and intelligent dispenser management.

7. Filters A filter is installed in the fuel line to remove rust, water, particulate impurities, and other contaminants before the fuel reaches the vehicle's tank. A high-quality filter effectively protects the precision components inside the dispenser (like the meter and valves) and, more importantly, protects the customer's vehicle engine from damage caused by contaminated fuel.

Jiahao's Advantage: Jiahao's specialized dispenser filters use advanced composite filter media, featuring high filtration accuracy and a large contaminant-holding capacity. They effectively intercept tiny impurities while maintaining low flow resistance to ensure fueling speed is not affected. Regularly replacing with Jiahao filters is a simple and effective way to guarantee fuel quality and enhance the station's reputation.

8. Valve Assemblies A dispenser contains various valves, such as solenoid valves that control the flow of fuel and emergency shut-off valves (shear valves) that ensure safety. The solenoid valve opens and closes rapidly based on commands from the control module to achieve precise pre-set fueling. The shear valve is installed at the base of the dispenser; if the dispenser is struck by an external force, it automatically breaks at a designated point and instantly seals both the upstream and downstream fuel lines, preventing major fuel spills and potential fires.

Jiahao's Advantage: Wenzhou Jiahao possesses core technology in the field of solenoid valves and emergency shut-off valves. Their solenoid valves are known for rapid response, excellent sealing, and long service life. Jiahao's emergency shut-off valves serve as a critical line of defense for station safety. Their precise shear-force design and reliable double-poppet sealing mechanism ensure that in the event of an accident, the fuel source is cut off immediately, in compliance with international safety standards.

9. Housing / Enclosure The housing is the outer protective structure of the dispenser. It is typically made of sturdy metal or composite materials to protect the internal precision electrical and mechanical components from rain, dust, and physical impacts.

10. Breakaway Coupling The breakaway coupling is a vital safety device installed on the fuel hose. If a driver forgets to remove the nozzle and drives away, the coupling will separate at a pre-set tension, sealing both ends of the hose simultaneously. This prevents fuel spillage and protects the dispenser from being pulled over, avoiding major safety incidents and property damage.

Jiahao's Advantage: The Reusable Breakaway Coupling is one of Wenzhou Jiahao's flagship products. Unlike single-use alternatives, after a drive-away incident, Jiahao's breakaway can be easily reconnected without needing to replace the entire unit. This significantly reduces maintenance costs and downtime for station owners. Its precise pull-force setting and reliable sealing performance make it a top choice for safety accessories at gas stations worldwide.

Conclusion

In summary, a reliable gas dispenser is the result of the synergistic work of these high-quality components. Choosing premium parts from a professional manufacturer like Wenzhou Jiahao Petroleum Machinery Co., Ltd is key to ensuring a gas station's safe, accurate, and long-lasting operation.