At this time, the front end can be cut off and flared again. (2) For flared pipe fittings, mostly due to excessive flaring, substandard quality or repeated disassembly, resulting in flaring deformation or cracks, etc., causing leakage. (6) Retighten the nut after passing the inspection. The ring is not allowed to move axially, but can rotate slightly (5) Disassemble and check whether the ring has been cut into the pipe and whether the position is correct. (4) Slowly tighten the nut, while turning the pipe until it stops, then tighten the nut 2/3～4/3 turns (3) Put the nut and the ring into the pipe one after the other, with the front edge of the ring (small diameter end) at least 3mm away from the pipe mouth, and then insert the pipe into the taper hole in the fitting body until it reaches It is absolutely not allowed to use melting (such as flame cutting) or grinding wheel cutting remove the internal and external round burrs, metal chips and dirt of the pipe end remove the anti-rust of the pipe fitting Agent and dirt at the same time, the roundness of the tube must be ensured (2) Use special pipe cutting machine to cut the pipe according to the required length. (1) The pipes that need pickling should be pickled first

If the ring is severely deformed during pre-assembly, the sealing effect will be lost. When connecting the pipeline, assemble it according to the specified tightening force. (3) The preloading force should not be too large so that the inner blade of the ring just fits into the outer wall of the pipe, and the ring should not be significantly deformed. If the pipe deflection is too large, it will cause the seal to fail. (2) When pre-installing, try to keep the coaxiality between the pipe and the fitting body. What kind of fitting body is used to connect one end of the pipe, the corresponding fitting end is preinstalled with the same type of fitting, so as to avoid leakage problems to the greatest extent. There are mainly straight type compression fitting, compression fitting straight-through connectors, tee type compression fitting, etc. The specific method is to use a fitting as the mother body to press the nut and ring onto the pipe. Small diameter fittings can be pre-assembled on the vise.

Generally, a dedicated device is required. (1) The most important part of the pre-installation of the cutting ring fitting directly affects the reliability of the seal.

Compression fitting hose