Whether it is called a sleeve in plumbing, or a fitting in general terms, a plumbing sleeve is used to connect with or without soldering or brazing two pipes, pipes or pipes.
The sleeve makes it possible to dispense with or make more reliable direct welding and brazing operations which are quite difficult to master.
The plumbing sleeve is therefore a watertight fitting that connects two or more tubes in order to allow everyone to assemble a plumbing installation.
Plumbing sleeve: different configurations
In order to meet the different configurations of pipe fitting malaysia, the sleeve is available in several versions and several names.
Depending on the shape, depending on the arrangement and the number of pipes to be connected:
The straight sleeve is a simple fitting that connects two perfectly aligned tubes.
The elbow sleeve is used to connect two tubes which are presented at an angle. A distinction is made between sleeves bent at 45 °, 60 ° or 90 °.
The flexible sleeve which makes it possible to connect two tubes having an unconventional offset or angle between them.
The T-sleeve which allows you to connect 3 tubes, two perfectly aligned and the third at 90 °.
Couplings according to the diameter (inside or outside) of the heads of the tubes to be connected:
- The equal sleeve where each end of the sleeve has the same diameter.
- The reduced sleeve on which the two ends have a different diameter.
The type of assembly with or without brazing:
The sleeves to be soldered (copper) or to be glued (PVC) are made of the same material or similar to that of the pipes they are used to connect.
Screw-in sleeves are usually made of copper. The sealing of the thread is then achieved either by bead or Teflon, or by means of a compression seal or by the very shape of a spheroconical fitting. They have the advantage of being the least expensive and the drawback of requiring a minimum of know-how, in particular in the production of beaten collars.
Olive sleeves where a soft copper crown (the olive) is crushed by screwing between two bicones in order to achieve the seal. They are quick and easy to install but do not support disassembly without replacement of parts.
Mixed seal sleeves with rubber seals held in place by a stainless steel washer. Disassembly is possible without replacement of parts but they are quickly expensive for complete installations.
Clip-on sleeves: RSO for the ‘Tool-Free Fitting’ for compression and RAPID’FIT for the sliding fitting which requires an assembly clamp:
Advantages: Compression sleeves do not require any tools and can be used by anyone. The assembly and disassembly are easy.
Plumbing: which sleeve for which tube?
In addition to the assembly to be carried out (straight, bent, flexible, rotating in T …) it is the type of material of the tubes as well as the type of installation (to be brazed or not) which dictate the choice of the sleeves to be installed.
On copper pipes : with brazing: copper sleeves to be brazed and without brazing: olive cone sleeves, joint sleeves, cleavable sleeves.
On PER (retified polyethylene) pipes: compression-type snap-on sleeves (without tools) or sliding (with specific clamp).
On PVC and CPVC (over-chlorinated PVC) pipes: glued or crimped sleeves.
Pay attention to the denomination of the copper pipes. A distinction is made between annealed copper which is flexible, delivered in a ring and intended to be placed in a shuttering sheath, from hardened copper which is rigid, delivered in bars and intended for visible assemblies.