Factors affecting the selection of fittings

Pipe material and working environment: the joint material should be compatible with the pipe material to avoid chemical reaction or corrosion. Considering the working environment: such as high temperature, high humidity, high corrosiveness, etc., choose the joint material that can adapt to these conditions. Working pressure: choose the right type of joint according to the working pressure of the piping system. High pressure systems require more robust fittings. Temperature factors: High-temperature systems require fittings that can withstand heat to prevent leakage caused by thermal expansion. Installation and Maintenance Requirements: Consider the ease of installation and maintenance needs of the coupling. Vibration and movement: If there is vibration or movement in the system, consider the displacement effects of vibration. Standards and quality: Select couplings that meet international standards and are of reliable quality to ensure stable product performance and good after-sales service.

Selection of pipe joints

Selection by connection method: Welded joints: connecting pipes together by welding, suitable for high pressure, high temperature and other harsh conditions.Flange joints: connected by flanges and bolts, suitable for piping systems that require frequent disassembly and maintenance.Threaded fittings: connecting by threads, suitable for small pipes and low pressure systems.Ferrule fittings: use a ferrule and nut fastening for quick installation and dismantling.Quick couplings: designed for quick connection and disconnection, often used where frequent operation is required.

Selected by structural form: Straight joints: used to connect two straight sections of pipe.Elbow: to change the direction of the pipeline, commonly used 45 degrees and 90 degrees elbow.Tee: connecting three pipe branches, divided into equal diameter and tee and reducer tee.Four-way joint: connecting four pipe branches. Size head: used to connect different diameters of pipes.

Selection by material: metal fittings: such as stainless steel, carbon steel, copper, etc., suitable for high-pressure, high-temperature environment. Plastic joints: such as PE, PP, PVC, etc., suitable for low pressure and corrosive media. Rubber joints: with good flexibility and sealing, suitable for piping systems with large vibration and displacement.

Selection by function: Sealing joints: used to ensure the sealing of piping system and prevent leakage. Expansion joints: can compensate for the thermal expansion and contraction of pipelines and displacement changes. Vibration-damping joints: used to absorb pipeline vibration and reduce noise and vibration transmission.

Low-pressure and small-diameter piping systems: threaded fittings and clamp fittings are often used. High-pressure and large-diameter piping systems: often use flange joints and welded joints. Frequent disassembly and maintenance: quick couplings and clamp fittings are more suitable.