Compression sleeve technology
Compression sleeve technology (short: "SHT") is a process from the plumbing and heating industry with which plastic pipes or - without a seal or O-ring between fitting and pipe - can be connected. As a result, permanent and permanently tight pipe connections are achieved.
application areas
The sliding sleeve technology - often also referred to as sliding sleeve connection - is now a common method in sanitary or heating installations and is used, among other things, for the laying of heating pipes, drinking water pipes or natural gas pipes.
requirements
Special plastic pipes made of polyethylene are required to use this technology . Polyethylene has sufficient resilience to return to its original shape after stretching (“ memory effect ”).
Establishing the sliding sleeve connection
First, the sliding sleeve is pushed loosely onto the pipe and then the pipe is widened at the open end with a special tool ( widening pliers ). Now the fitting can be pushed into the expanded pipe end. With the sliding tool, the previously loosely attached sliding sleeve is pushed axially over the pipe and the support body of the fitting until it stops . The inner circumference of the plastic pipe is pressed onto the grooved profile of the fitting. An additional elastomer sealing ring, as is the case with conventional connection techniques, is not required, since the inner layer of the pipe is elastic enough to produce the seal.