Siphon Knockout Pots

MGS design and manufacture an extensive range of knockout pots for the control and removal of liquids within methane gas extraction on landfill sites.

Self-drain knockout pots comprise of a chamber into which the landfill gas expands, and the velocity reduces. The resulting condensate then drains into a reservoir through an internal tube, and as the level rises it drains back into the surrounding waste. An internal liquid seal prevents any ingress of oxygen.



  • Landfill gas extraction systems


  • Manufactured from black HDPE
  • Bespoke designs
  • Manufactured in both SDR11 and SDR17

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