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Types and Working Principles of Quick Release Couplings

What are quick release couplings?


Quick release couplings are mechanical devices that allow for the rapid, simple, and secure repeated connection and disconnection of fluid pipelines without the need for any tools. Widely used in hydraulic systems, they enable efficient transport of liquids, greatly improving work efficiency.


Components of quick release couplings


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.


Types of quick release coupling


According to their usage, quick release couplings can generally be classified into: air quick release couplings, oxygen fuel gas quick release couplings, gas-liquid universal quick release couplings, hydraulic quick release couplings, inert gas quick release couplings, cooling water temperature oil quick release couplings, and semiconductor quick release couplings.


According to their structure, quick release couplings can generally be classified into: two ends closed quick release couplings, two ends open quick release couplings, and single-way closed quick release couplings.


Qrc coupling working principle 


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.


Selection criteria for quick release couplings


  • Type of fluid, temperature


  • Pressure of the liquid


  • Structure of the automatic switch valve


  • Operating environment of the quick release couplings


  • Ensure that the thread of the selected quick release couplings match


  • Shape and size for installation


Introduction to Kuaishi quick release couplings


As one of China's leading professional quick release coupling suppliers, Kuaishi considers the qrc coupling working principle in their design to ensure that each quick release coupling has efficient and reliable performance. By integrating the working principle of quick release couplings into their design, Kuaishi provides solutions to enhance system performance and extend system life. Additionally, with exceptional expertise, Kuaishi offers various quick release coupling types to meet your specific needs. Choosing Kuaishi means choosing the best quick release couplings, offering excellent performance to meet your specific requirements.

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Shanghai Kuaishi Fluid Technology Co.,Ltd.
Building A18A, No. 6999 Chuansha Rd, Pudong District, Shanghai
+86-21-50125451 tinali02@126.com
Building A18A, No. 6999 Chuansha Rd, Pudong District, Shanghai
tinali02@126.com
+86-21-50125451