PVC ring seal drainage fittings for drainage and sewage pipework
PVC ring seal drainage fittings are used to connect, branch, reduce, adapt and close PVC-U drainage and sewage pipework. They support the layout of drainage runs where pipe direction, pipe diameter or connection format needs to change. Common product types include drainage bends, T-pieces, sockets, reducer bushes, saddles, plugs, caps and related PVC drainage accessories.
The product names specify PVC-U material, ring seal and spigot connection formats, plus colours such as grey, redbrown and black. Several items are also marked with details such as SN4, SN8, DN100, DN150, DN250, KOMO/BENOR or KIWA/KOMO. Match these details to the pipework and installation context before ordering.
Choose the right fitting type
Direction changes are handled with PVC drainage elbows and bends. Visible angle options include 15°, 30°, 45° and 87°. Drainage bends 45 degree and drainage bends 87 degree options are available in ring seal x spigot versions, with some short grey versions also listed. These fittings help create the required pipe route without changing the basic drainage pipe system.
Branches are made with a PVC drainage T-piece or reducer T-piece. Product titles include 45°, 87° and 90° T-pieces, plus versions with ring seal x ring seal x spigot connections. Reducer T-pieces are useful when connected pipe sizes differ, for example where a smaller branch connects into a larger drainage run.
Sockets, bushes and adaptors
Sockets and bushes are practical drainage pipe connectors for joining or adapting pipework. The visible socket options include drainage socket PVC-U, drainage adaptor socket and drainage repair socket products. Adaptor sockets appear with ring seal x spigot connections, while repair sockets are listed for maintenance or replacement work where an existing drainage line needs attention.
Drainage reducer bush products are listed in PVC-U and in rubber reinforced with nylon. Connection formats include ring seal x spigot and spigot x ring seal. Use reducer bushes when two stated diameters need to be connected correctly. Visible sizes include 50 mm, 75 mm, 110 mm, 125 mm, 160 mm, 200 mm and 250 mm across different product variants, so checking the exact diameter in the product title is essential.
Saddles, plugs, caps and accessories
Drainage saddles support branch connections into existing pipework. A listed example is a drainage glue saddle PVC-U with screw inlet x ring seal connection in grey. Saddles are useful where a new inlet must connect to an established drainage run, provided the diameter and connection format match the pipe system.
PVC drainage plugs and caps close pipe ends or unused connections. Product titles include drainage plug PVC-U spigot redbrown and drainage cap PVC-U glue socket redbrown. These fittings help finish or temporarily close parts of a PVC drainage system where an open pipe end is not required.
Other ring seal sewer fittings include non return valve products with ring seal x spigot connections. These belong with PVC drainage system fittings where the installation requires a specific valve component. Always compare the material, diameter, colour and connection details before combining a valve with other sewer pipe fittings.
Check connection format, size and markings
Ring seal drainage fittings must match the connection layout of the pipework. Product titles show formats such as ring seal, spigot, ring seal x spigot, ring seal x ring seal x spigot, glue socket and screw inlet. These terms describe how each fitting connects to the surrounding drainage pipe connectors.
Size and marking details also matter. A fitting marked 110 mm is not the same as a fitting marked 160 mm or 250 mm. DN references such as DN100, DN150 and DN250 also appear on selected products. Some PVC-U drainage fittings show SN4 or SN8 in the product title. Use the stated product details to keep compatible components together within the same drainage or sewage pipework.
Build a consistent PVC drainage system
A consistent PVC drainage system uses fittings that match in diameter, material and connection type. Combine bends for route changes, T-pieces for branches, sockets for joins, reducer bushes for size transitions, saddles for inlets, and plugs or caps for closures. Keeping these details aligned helps avoid mismatched parts and supports a cleaner installation process.
For ring seal drainage fittings, start with the pipe diameter and connection format. Then choose the required product type and angle, where relevant. Finally, check visible product details such as colour, SN marking, DN marking and any KOMO/BENOR or KIWA/KOMO reference shown in the product name.