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Application

These are most commonly used in food, dairy, fish and beverage factories.

Description

A benched bottom manholes liner. It has a sloped base to help residue exit the chamber.

Features and benefits:

  • The inlets and outlets on these benched bottom manhole liners are designed to allow for connection of stainless steel, polypropylene or PVC-U pipework.
  • Liners can accommodate 1, 2, 3 or multiple side inlets at varying inverts and 1 side outlet. Inlet sizes vary from 75 mm diameter to 300 mm diameter, and to suit dairy pipe/ metric pipe and scheduled pipe and polypropylene/ PVC-U pipe sizes.
  • For the round body variant, the angles of the inlets can be easily positioned to suit pipe direction.
  • Where liners are internal in the building, the product is generally supply double sealed or triple sealed recessed stainless steel manholes for concrete infill from B125 up to D400 load.
  • Where liners are external to the building, the covers above these liners are generally cast iron, but can be double sealed recessed or chequer plate stainless steel.
  • Liner bodies are fully welded and dye pen tested. For deep liners optional step rungs can be added.

Please note: In most cases the top of liner is 200–300 mm below FGL (load bearing concrete above this supports the Kent or other manhole frame and cover at ground level. The manhole frame and cover is most often smaller than the liner opening and can be a standard size).

Applications:

These are most commonly used in food, dairy, fish and beverage factories.

Specification data
Product Reference

Benched Bottom Manhole Liner

Type

KBBML850

Round.

KBBML1000

Round.

KBBML1200RD

Round.

KBBML700-700SQ

Square.

KBBML950-950SQ

Square.

KBBML1200-1200SQ

Square.

Bespoke

Consult manufacturer and insert requirements.

Loading to BS EN 1433

B125

C250

D400

Body size

Bespoke options regards height, width and depth available, consult manufacturer and insert requirements.

Inlet -
Size

75–300 mm diameter available, consult manufacturer and insert requirements.

Quantity

1

2

3

As drawing

Insert details.

Step rungs

Not required

Required

For deep liners.

Standard product features

Outlet:

  • KBBML850: 204 mm.
  • KBBML1000: 324 mm.
  • KBBML1200RD: 305 mm.
  • KBBML700-700SQ: 160 mm.
  • KBBML950-950SQ: 324 mm.
  • KBBML1200-1200SQ: 254 mm.

Product Options

Liner sizes are customized to suit each project - the following are examples of previous sizes manufactured and can be completely adapted in terms of height/ width/ depth/ and inlets size and quantity.

Body size:

– Round variant (diameter x h):

  • KBBML850: 850 x 1000 mm.
  • KBBML1000: 1000 x 1600 mm.
  • KBBML1200RD: 1200 x 1000 mm.

– Square variant (w x l x h):

  • KBBML700-700SQ: 700 x 700 x 500 mm.
  • KBBML950-950SQ: 950 x 950 x 1417 mm.
  • KBBML1200-1200SQ: 1200 x 1200 x 1200 mm.

Inlets:

  • KBBML850: 204, 160 and 110 mm.
  • KBBML1000: 273, 273 and 203 mm.
  • KBBML1200RD: 162, 201 and 205 mm.
  • KBBML700-700SQ: 110 and 110 mm.
  • KBBML950-950SQ: 273 mm.
  • KBBML1200-1200SQ: 254, 254 and 160 mm.

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