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Below Ground

Backflow Valves

The Harmer SML system, with its comprehensive range of fittings and accessories, offers an innovative, whole-building solution for soil, waste and rainwater drainage installations. The system is fully compatible with other market-leading Harmer and Wade drainage products, including roof, floor, shower and channel drains

The Harmer SML socketless lightweight cast iron soil and waste system is BBA certified and meets the Standard of BS EN 877. The SML system combines modern, state-of-the-art drainage technology with the unique characteristics and benefits of cast iron as a preferred material for drainage installations

Download the Harmer SML Lightweight Cast Iron Soil & Waste Technical Brochure from our downloads page.

* PLEASE NOTE: Free delivery threshold of £1,000 apply to these made-to-order products

N.B. These products are coming to the website soon! In the meantime they acn be ordered by Phone on 0800 644 44 26 or email [email protected]

Set Descending Direction
per page
  1. 300mm SML Below Ground Blank End
    300mm SML Below Ground Blank End
    £238.36
    Estimated Delivery date is 07/10/2024
  2. 150 x 100mm SML Below Ground Reducers
    150 x 100mm SML Below Ground Reducers
    £93.71
    Estimated Delivery date is 07/10/2024
  3. 200 x 100mm SML Below Ground Reducers
    200 x 100mm SML Below Ground Reducers
    £166.60
    Estimated Delivery date is 07/10/2024
  4. 200 x 150mm SML Below Ground Reducers
    200 x 150mm SML Below Ground Reducers
    £166.60
    Estimated Delivery date is 07/10/2024
  5. 250 x 150mm SML Below Ground Reducers
    250 x 150mm SML Below Ground Reducers
    £343.26
    Estimated Delivery date is 07/10/2024
  6. 300 x 150mm SML Below Ground Reducers
    300 x 150mm SML Below Ground Reducers
    £477.83
    Estimated Delivery date is 07/10/2024
  7. 250 x 200mm SML Below Ground Reducers
    250 x 200mm SML Below Ground Reducers
    £343.26
    Estimated Delivery date is 07/10/2024
  8. 300 x 200mm SML Below Ground Reducers
    300 x 200mm SML Below Ground Reducers
    £477.83
    Estimated Delivery date is 07/10/2024
  9. 300 x 250mm SML Below Ground Reducers
    300 x 250mm SML Below Ground Reducers
    £477.83
    Estimated Delivery date is 07/10/2024
  10. 100mm SML Below Ground Plain Trap
    100mm SML Below Ground Plain Trap
    £72.69
    Estimated Delivery date is 04/11/2024
  11. 100 x 100 x 45 Deg SML Below Ground Single Inspection Chamber
    100 x 100 x 45 Deg SML Below Ground Single Inspection Chamber
    £402.22
    Estimated Delivery date is 07/10/2024
  12. 150 x 100 x 45 Deg SML Below Ground Single Inspection Chamber
    150 x 100 x 45 Deg SML Below Ground Single Inspection Chamber
    £521.25
    Estimated Delivery date is 07/10/2024
  13. 150 x 150 x 45 Deg SML Below Ground Single Inspection Chamber
    150 x 150 x 45 Deg SML Below Ground Single Inspection Chamber
    £661.37
    Estimated Delivery date is 07/10/2024
  14. 100 x 100 x 100mm SML Below Ground Double Inspection Chamber - Square
    100 x 100 x 100mm SML Below Ground Double Inspection Chamber - Square
    £472.71
    Estimated Delivery date is 07/10/2024
  15. 150 x 100 x 100mm SML Below Ground Double Inspection Chamber - Square
    150 x 100 x 100mm SML Below Ground Double Inspection Chamber - Square
    £612.47
    Estimated Delivery date is 07/10/2024
  16. 150 x 150 x 150mm SML Below Ground Double Inspection Chamber - Square
    150 x 150 x 150mm SML Below Ground Double Inspection Chamber - Square
    £777.16
    Estimated Delivery date is 07/10/2024
  17. 150 x 100 x 100mm SML Below Ground Double Inspection Chamber - Rectangular
    150 x 100 x 100mm SML Below Ground Double Inspection Chamber - Rectangular
    £1,243.83
    Estimated Delivery date is 07/10/2024
  18. 100mm SML Below Ground Bell Mouth Gulley
    100mm SML Below Ground Bell Mouth Gulley
    £80.59
    Estimated Delivery date is 07/10/2024
  19. 150mm SML Below Ground Bell Mouth Gulley
    150mm SML Below Ground Bell Mouth Gulley
    £132.56
    Estimated Delivery date is 07/10/2024
  20. 200mm SML Below Ground Bell Mouth Soild Plate
    200mm SML Below Ground Bell Mouth Soild Plate
    £27.35
    Estimated Delivery date is 07/10/2024
  21. 150 x 150 x 150mm SML Below Ground Double Inspection Chamber - Rectangular
    150 x 150 x 150mm SML Below Ground Double Inspection Chamber - Rectangular
    £1,551.90
    Estimated Delivery date is 07/10/2024
  22. 400mm SML Below Ground Pipes - 3 metre length
    400mm SML Below Ground Pipes - 3 metre length
    £1,631.16
    Estimated Delivery date is 07/10/2024
  23. 200mm SML Below Ground Bell Mouth Grate
    200mm SML Below Ground Bell Mouth Grate
    £18.68
    Estimated Delivery date is 07/10/2024
  24. 100mm SML Below Ground Puddle Flange
    100mm SML Below Ground Puddle Flange
    £96.40
    Estimated Delivery date is 07/10/2024
  25. 150mm SML Below Ground Puddle Flange
    150mm SML Below Ground Puddle Flange
    £125.50
    Estimated Delivery date is 07/10/2024
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