320mm Manhole Chamber Base 110mm 3 Inlet Kayflow | UG1004

Description

The 320mm manhole chamber base is a genuine Kayflow UG1004 component designed to form the bottom section of a compatible 320mm underground inspection chamber. This 110mm chamber base uses 110mm sockets throughout and provides a compact connection point for underground drainage pipework. The UG1004 has one main entry and two 45° side entries, creating a practical 3 inlet chamber base layout. Two blanking plugs are included for unused connections. It is designed as the foundation of a shallow inspection chamber system, with Kayflow specifying a maximum complete chamber depth of 600mm.

320mm Manhole Chamber Base

The 320mm manhole chamber base provides the starting point for building a compatible Kayflow 320mm inspection chamber. The base incorporates the drainage channels and connection points required to bring underground drainage pipework into an accessible chamber. Its compact 320mm chamber size makes it particularly useful where a smaller inspection chamber is suitable and the greater depth or diameter of a 450mm chamber system is not required. Kayflow manufactures its 320mm chamber bases, risers, lids and frames from polypropylene. The manufacturer’s current product guide identifies the UG1004 base as 320mm and gives an installed base height of approximately 190mm.

Kayflow UG1004 Chamber Base

Kayflow UG1004 is the genuine manufacturer reference for the standard 320mm manhole base. This is the reference that should be used when identifying the individual chamber base, even where a merchant uses a separate bulk or internal stock code. Kayflow also lists BUG1004 as the bulk reference for this product. The current manufacturer guide lists UG1004 with a pack quantity of one and BUG1004 with a bulk quantity of 56. Using Kayflow UG1004 as the manufacturer part number helps distinguish this chamber base from the UG1002 riser, UG108 riser seal and the various compatible 320mm cover options.

110mm Chamber Base for Underground Drainage

This 110mm chamber base has 110mm sockets throughout and is designed to form part of a compatible 110mm underground drainage chamber system. The socket arrangement allows compatible 110mm underground drainage pipework to connect directly to the chamber base. Always check the drainage layout before installation so the required connections can be selected and unused positions correctly blanked. The 110mm chamber base is intended to be used with compatible Kayflow 320mm chamber components rather than as a standalone fitting. A riser, appropriate sealing component and suitable cover arrangement can be added according to the required finished chamber depth.

3 Inlet Chamber Base Layout

The 3 inlet chamber base configuration consists of one main entry and two 45° entries. This provides three drainage connection positions while keeping the chamber compact enough for the 320mm inspection chamber system. Kayflow supplies two blanking plugs with the system so unused side connections can be closed where they are not needed. The blanking plugs should not be counted as additional inlets, which is why the UG1004 is correctly described as a 3 inlet chamber base rather than a five-inlet base.

UG1004 Connection Arrangement

• 1 x main entry
• 2 x 45° entries
• 2 x blanking plugs
• 110mm sockets throughout
• 320mm nominal chamber size

Shallow Inspection Chamber System

The UG1004 is designed to form the base of a shallow inspection chamber. Compatible Kayflow 320mm risers can be added above the base where additional height is required before the appropriate chamber cover is fitted. Kayflow specifies a maximum installation depth of 600mm for the complete 320mm chamber system. This makes the range suitable where a shallow inspection chamber provides sufficient access to the underground drainage system. The current Kayflow product guide also identifies the 320mm inspection chamber system under BS EN 13598-1:2020.

Building a 320mm Manhole Chamber

To create a complete chamber, the 320mm manhole chamber base is installed first and connected to the required 110mm drainage runs. Compatible chamber risers can then be used to build up the chamber to the required finished level, subject to Kayflow’s stated maximum system depth. The appropriate riser seal and cover arrangement should be selected from the compatible 320mm chamber system. Before assembly, ensure the jointing areas are clean and follow Kayflow’s current installation guidance. The manufacturer recommends generous lubrication on inspection chamber joints.

Choosing the Correct Kayflow Chamber Base

The Kayflow UG1004 should be selected where a 320mm chamber system with 110mm connections is required. It should not be confused with Kayflow’s larger 450mm chamber bases, which use different risers, sealing components and cover arrangements. The combination of a compact chamber diameter, 110mm chamber base connections and flexible 3 inlet chamber base layout makes the UG1004 a useful starting point for a variety of underground drainage chamber arrangements.

Key Features

• Genuine Kayflow chamber base
• Manufacturer reference UG1004
• 320mm nominal chamber size
• 190mm manufacturer-stated installed base height
• 110mm sockets throughout
• One main entry
• Two 45° entries
• Two blanking plugs
• Polypropylene construction
• Compatible with Kayflow 320mm chamber components
• Maximum complete chamber system depth of 600mm
• Kayflow inspection chamber system identified to BS EN 13598-1:2020

Compatible 320mm Inspection Chamber Components

Complete the chamber using compatible components from our 110mm x 320mm manhole inspection chamber range, including risers, seals and suitable cover options. For current manufacturer specifications and installation guidance, visit the official Kayflow 320 Inspection Chambers page. The 320mm manhole chamber base is therefore the correct choice where a genuine Kayflow UG1004 110mm chamber base with a 3 inlet chamber base configuration is required for a compatible shallow inspection chamber system.