Compression fittings are a common connection method in pipeline systems, and their main components include compression rings and compression nuts.
Compression Ring
structure and shape
Shape: Compression rings are usually circular in shape with an inner diameter that matches the outer diameter of the pipe to ensure a good fit.
Cross-sectional design: The cross-sectional design is usually special to ensure uniform deformation when compressed to form an effective seal.
Material
Rubber: Rubber is one of the common compression ring materials and has superior elasticity, allowing it to quickly return to its original shape when stressed. This makes the rubber suitable for many different applications, including some environments where corrosion resistance is required.
Polymers: High-performance plastics such as polytetrafluoroethylene (PTFE) or polyethylene (PE) are also commonly used to make compression rings. These materials offer excellent chemical and abrasion resistance.
Metal: In high temperature or high pressure environments, metal compression rings, such as stainless steel or copper alloys, are sometimes used to ensure their resistance to high temperatures and corrosion.
Function
Sealing performance: The main function of the compression ring is to form a seal when subjected to compression force to prevent liquid or gas leakage. Its elastic deformation is the key to achieving this sealing effect.
Adaptability: The design of the compression ring takes into account the slight deformation and vibration that may exist in the pipeline system, giving it a certain degree of adaptability and maintaining sealing performance.
Compression Nut
structure and shape
Shape: Compression nuts are usually cylindrical with a threaded structure inside to mate with the external threads on the pipe.
Handle Design: In some designs, the compression nut may have a handle or protrusion to allow for manual tightening without the need for special tools.
Material
Metal: Compression nuts are usually made of metal, most commonly brass. Brass has good strength and corrosion resistance, making it suitable for a variety of piping systems.
Stainless steel: In some special environments, such as highly corrosive applications, stainless steel compression nuts may be used.
Function
Apply pressure: The main function of the compression nut is to apply pressure by tightening to compress the compression ring between the pipe and fittings to achieve a seal.
Adjust tightening force: Proper tightening force is key to ensuring a good seal. The design of the compression nut allows the operator to adjust the tightening force by hand tightening.
