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Quick release couplings are mechanical devices designed for the rapid, simple, and secure connection and disconnection of fluid pipelines without the need for tools. Widely used in hydraulic systems, various types of quick release couplings facilitate the efficient transport of liquids, greatly improving work efficiency.
Internal valves of a quick release couplings consist of the connector body, one-way valve core, lock sleeve, steel ball, spring, and quick release coupling seals.
Quick release couplings can be classified into various types of quick release couplings based on their usage and structure. By usage, they include air, oxygen fuel gas, gas-liquid universal, hydraulic, inert gas, cooling water temperature oil, and semiconductor quick release couplings. By structure, the types consist of two ends closed, two ends open, and single-way closed quick release couplings.
Working principle of two ends closed quick release couplings
Inside the connector body is a one-way valve. When the male and female connectors are separated, the one-way valve core extends outward under the action of their respective springs, pressing into the conical lock hole of the connector body, thus achieving road closure. The oil inside the hose connector is sealed within the pipeline. The interior of the quick release couplings uses a steel ball for locking. During operation, the lock sleeve, under the action of the spring, presses the steel ball into the concave slot of the connector body, thus ensuring the firmness after the body is connected.
Working principle of two ends open quick release couplings
The difference from the two ends closed quick release couplings in their operating principle is that there is no one-way valve inside the connector body. When the two connector bodies are separated, the passage cannot be closed, and the two ends of the connector respectively connect to the hose, with the hose connector core directly inserted into the quick release couplings.
When choosing the right types of quick release couplings, the following key factors must be considered:
Fluid & Temperature: Choose quick release couplings that match the fluid type and withstand its operating temperature.
Pressure Rating: Ensure the coupling’s pressure capacity suits the system’s maximum working pressure.
Valve Design: Select a valve type (poppet, ball, or flat-face) based on required flow control and leak prevention.
Environment: Consider dust, moisture, and vibration resistance for durable performance.
Thread Compatibility: Verify that thread sizes and standards (e.g., NPT, BSP) align with the system.
Size & Shape: Confirm dimensions and connection style (straight, elbow) for proper fit and function.
Select the right types of quick release couplings from hydraulic quick release coupling manufacturers based on these requirements.
Kuaishi considers the QRC coupling working principle in their design to ensure efficient and reliable performance as one of China's leading professional quick release coupling suppliers. By integrating this principle, Kuaishi enhances system performance and extends system life. Kuaishi provides various types of quick release couplings, engineered for diverse industry applications.
