Modern drainage systems often require the creation of numerous, often very complicated pipe connections. Easy and quick assembly without the use of specialist tools and cutting holes, as well as durable and tight connection of drainage pipes are possible thanks to modern drainage connectors. They are used wherever there is a bend or branching of the system. Are you planning to build, expand or modernize a storm sewer system? Learn about the available types of drainage connectors and how to properly mount them on pipes.

Check out the drainage connectors at the Onninen wholesaler
What types of drainage connectors are there?
The most common types of drainage connectors are:
- drainage tees,
- drainage knees,
- drainage sleeves,
- drainage plugs,
- drainage crossings,
- drainage reductions,
- drainage connectors,
- final drainage storm valves.
The type of product determines its purpose (function). Drainage connectors available on the market also differ in terms of the material they are made of. In drainage installations, connectors made of plastics work perfectly, especially PVC, i.e. polyvinyl chloride, and PP, i.e. polypropylene. Polyvinyl chloride is a durable material, resistant to water and other external factors.
Polypropylene is resistant to aggressive chemical compounds, including those found in plant protection products. At the same time, it is safe for the natural environment. The unique properties of the plastics used, supported by innovative production technologies, translate into durability, safety and long-term, reliable, automatic operation of the drainage system. Not only drainage fittings are made of PVC and PP, but also drainage pipes.
The difference between drainage connectors also lies in size. Individual variants of fittings are used to connect drainage pipes with diameters from approx. 70 mm to approx. 100 mm, depending on the manufacturer and model. Therefore, when choosing a drainage connector, it is essential to pay attention to which pipe it fits.
How to properly install drainage connectors?
The exact method of installing drainage connectors will depend on the system chosen by the installer. One of the most popular solutions on the Polish market is the universal drainage pipe connector system, developed and patented by Zakłady Karmat. It allows for connecting pipes with diameters ranging from 72 to 100 mm.
Drainage pipes are connected in an exceptionally easy and quick way - without the need to cut holes in them or lubricate the elements. The tightness and durability of the obtained connections are confirmed by tests. The installation of the drainage system consists of cutting the drainage pipe and inserting it into the connector - until it snaps. This process is described in detail on the manufacturer's website.
Drainage connectors at the Onninen wholesaler
At the Onninen plumbing and electrical wholesaler you can buy any drainage connector you need. Our range includes solutions such as:
All items come from the most recognizable and valued manufacturers in the industry. We are an authorized representative of Karmat - a leading manufacturer of anti-flood devices and Kaczmarek Malewo - a leader in the production of plastic installation systems. We help build complete drainage systems around homes and companies, as well as tracks, fields, meadows, parking lots, industrial areas, airports, etc.
In addition to drainage connectors, our offer also includes drainage pipes, drainage wells, geotextiles, seepage boxes, retention tanks and various accessories. All products can be ordered online. For retail customers, the entire assortment of the online wholesaler is available. Onninen stationary branches located in over 30 Polish cities also provide professional services. We invite you!
Are you having trouble choosing drainage connectors, pipes or other elements of the drainage and retention system? Contact us – you can call us or write to us.