The construction of modern PVC sewage manholes includes several main elements. They may differ depending on the manufacturer and system, but the basic parts are usually similar. So we have a base - a base that connects to the pipeline, a riser pipe (also called a riser) and a telescope with a telescopic pipe, a hatch and a sleeve with a seal. What is a sleeve? Why is it worth using? And which pipe sleeve will fit in a given case? We answer!
Check out the cuffs at the Onninen wholesaler
What is a cuff and what are its advantages?
A sleeve is a sealing cover containing gaskets. It belongs to the group of accessories dedicated to plastic wells. It is used in sewage and drainage networks. It is used for a tight connection of the riser pipe and the telescopic pipe. It is mounted between them. The obtained connection is characterized not only by perfect tightness, but also by flexibility. The sleeves compensate for stresses resulting from the action of atmospheric factors, natural processes occurring in the ground and specific environmental conditions. Thanks to this, pipelines can be effectively and long-term protected against leaks. These elements should be durable, resistant to mechanical damage and easy to install.
However, sewage is not the only area of application of sleeves. Due to the ability to compensate for thermal expansions, the sleeve is also commonly used in water, gas, heating and industrial networks. In the case of, for example, culverts under the road, it allows for sealing the space between pipes: a carrier pipe and a casing or drilling pipe. Thanks to the sleeve, water, sand or various impurities do not penetrate between the pipes. The material of the carrier/casing pipes is not important.
Selecting the right sealing sleeve for a corrugated pipe
When choosing a telescopic transition sleeve, the diameters of the corrugated riser pipe and the smooth telescopic pipe are particularly important. In addition, you should pay attention to the material of manufacture, which determines the properties of the element. A rubber sleeve will fit, among others, a corrugated pipe. Of course, not all rubber is the same. EPDM rubber, based on a special type of rubber, works well in the construction of manholes.
The EPDM sleeve is characterized by increased durability and resistance to weather conditions, extreme temperatures, UV radiation and aggressive liquids. It is flexible and elastic, but does not deform. In sewage installations, extremely durable and resistant sleeves made of PP (polypropylene) are also used to seal the space between the carrier pipe and the casing pipe.
Cuffs at the Onninen wholesaler
The Onninen hydraulic wholesaler offers sleeves, seals and many other accessories for plastic wells. We offer high-quality PP sleeves and solid rubber seals. Our range includes solutions from the most valued manufacturers on the market, such as Kaczmarek and Wavin.
Still not sure which pipe sleeve to choose? Contact us!