What is the difference between an inverted flare connection and a standard flare connection?

Inverted flare and standard flare are two common pipe connection methods in engineering and manufacturing. The design feature of the inverted flare connection is that the end of the pipe is pressed into an inverted flare shape. This design allows the external threaded connector to be screwed into the inverted flare to form a tight connection. This structural design performs well in high-pressure systems, such as hydraulic pipes and refrigeration systems, and can provide stronger sealing and pressure resistance. Inverted flare connections are usually made of corrosion-resistant materials such as brass or stainless steel to ensure that they can still maintain good performance under harsh environmental conditions.

In contrast, the standard flare connection is that the end of the pipe is pressed into an outward-turned flare shape. This design allows the internal threaded connector to be screwed into the outward-turned flare to form a tight connection. Standard flare connections are usually used in low to medium pressure systems, such as fuel lines and general liquid delivery pipelines. It also provides good sealing and connection strength, but is not suitable for use under high pressure conditions.

In terms of installation, the inverted flare connection requires the external threaded joint to be properly screwed into the inverted flare and the appropriate torque to ensure a tight connection. This method not only provides a reliable seal, but also simplifies the installation process and reduces the complexity of manual operation. Ordinary flare connections also require appropriate torque to ensure a tight connection, but their installation process is relatively simpler and suitable for a wider range of pipeline applications.