At present, there are various connection methods of stainless steel water pipes in the market, such as pressure connection and compaction, ring pressure, bonding and so on. Let's compare several common connection methods:
1. Clamping connection: both the outer tube and the inner rubber ring at the joint are pressed into the hexagon. Scope of application: cold water system, pipeline direct drinking water system and exposed pipeline are more suitable. Advantages: simple and convenient connection, short working hours and moderate cost. Disadvantages are single application and troublesome maintenance. It is very troublesome to replace the sealing ring in the pipeline after aging. Because it was stuck during connection, both ends of the pipe must be sawed off before replacing it. Hot water systems should also be avoided as much as possible, mainly because the service life of sealing rings in hot water systems is uncertain. Therefore, concealed pipes and hot water systems are generally not recommended. Scope of application: all kinds of pipe connections with diameters not greater than dn 150.
2. Double-clip connection: Double-clip connection technology is an improved S-clip connection technology based on single-clip connection technology, and an extension edge is added to the single-clip port. Scope of application: connection of various pipelines with diameters not greater than dn 150, used for some large-diameter pipelines.
3. Ring pressure connection: Ring pressure connection is an improvement and development on the basis of double pressure. Its characteristics are: ring lock structure of broadband sealing ring (filled seal), and its application scope: it is used to connect various pipelines with diameter dn 15-dn 150.
4. Double-ring crimping: The "double-ring crimping" method of stainless steel water pipes is a national patent product and a new connection method. It is a re-optimized structure on the basis of annular pressure pipe fittings, which increases the size of the sealing sleeve, and adds two sealing surfaces on the basis of the original annular pressure, with a total of ***4 sealing surfaces, thus avoiding the hollowing of the sealing section, improving the sealing performance and preventing leakage.
In the process of pressing with special tools, the tools are evenly pressed inward along the outer edge of the sealing section of stainless steel water pipes, and the scientific compression ratio is calculated according to the thickness of different rubber sealing rings, that is, sealing bags, so that the products can be molded at one time, with high tensile strength and good sealing performance, and the products are more scientific, firm and durable. Scope of application: It is used to connect various pipelines with diameters dn 15-dn 150, and is widely used in gas, water supply and drainage, fire fighting and other fields.
5. Snap ring connection: Snap ring connection technology is an organic combination of mechanical connection and bonding. Its characteristics are: no longer relying on rubber ring sealing, the connecting medium is aerospace anaerobic glue, which is safe, reliable, aging-resistant, corrosion-resistant and long in service life. It is the most ideal connection method for stainless steel pipeline connection at present. Scope of application: the temperature is -50- 100 degrees, and it is used to connect various pipelines with diameters of dn 15-dn 150.
Generally, the reliable connection between double ring pressure and card glue is better, so we can pay more attention here.