320mm Diameter Chamber Base 4 side inlets

Product Description

Provide safe, accessible inspection and junction points in your underground drainage system with this 320mm Diameter Chamber Base 4 side inlets with four 110 mm side branch inlets. Designed for both new installations and upgrades, it gives you flexible connections, strong sealing, and easy maintenance. The four side inlets allow pipes to enter from multiple directions, making it ideal for layouts where you need versatile plumbing or future expansion.

This chamber base is made from thick-walled, durable PVC-U (or equivalent plastic), capable of withstanding soil pressure, moisture and below-ground stresses. Its round base has an internal through-channel, so water entering one side can flow through to the outlet efficiently without sharp turns. Unused inlets can be plugged until needed, giving you flexibility.

The top of the chamber base is flat-faced (level inlet), which means it integrates well with the base of the chamber riser or cover frame and allows the cover to sit flush with the surface. The diameter of 315mm makes it compact enough for many applications, yet large enough to allow adequate flow and inspection access.

Key Features

• Diameter: 315 mm – standard chamber base size compatible with inspection chamber systems.

• Four 110 mm side branch inlets – positioned so multiple pipes can connect at each side.

• Level-top base (i.e. the inlet to the riser / cover sits flush) which helps with neat finish and cover installation.

• Includes blanks/plugs to seal off inlet sockets not currently used (so water or debris doesn’t enter where not needed).

• Durable plastic construction resistant to soil, moisture, and minor ground movement.

• Suitable for adoptable & non-adoptable installations (depending on local regulations), shallow chamber depth (invert depth usually ≤ 0.6m).

Benefits

• Flexibility in layout: With four side inlets, you can feed pipes from different directions and plan for future expansion.

• Ease of inspection & cleaning: A chamber base provides a rodding / inspection access point, helping keep drains running clear.

• Secure, watertight connection: Side inlets with socket/ring-seal joints (plus plug-offs for unused entries) help prevent leaks and ground ingress.

• Neat installation: Level inlet and correctly aligned cover give a finished appearance, no trip hazards or uneven surfaces.

• Cost-effective & future-proof: Unused inlets can be blanked off rather than buying extra parts when needed; installation now doesn’t limit future connection options.

• Compliant with standards: Meets typical inspection chamber requirements and regulations.

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