Top Hat Grommet 1/4″ or 3/8″ or 3/8″ – 1/4″



Top Hat Grommet 1/4″ or 3/8″ or 3/8″ – 1/4″

Top Hat Grommet 1/4″, 3/8″ or 3/8″ – 1/4″ for AutoPot Watering Systems.

  • Choose 3/8″ for AQUAvalve 5 and 3/8″ pipe and fittings
  • Choose 1/4″ or 3/8″ – 1/4″ for older, pre-October 2020 AQUAvalves (AQUAvalve 4 Black and AQUAvalve 3 Blue) with 1/2″ pipe and fittings

Top Hat Grommets provide a water tight connection using 3/8″ or 1/4″ pipe with the 12.4 gal plastic reservoirs.

The Top Hat Grommet is positioned at the bottom of the reservoir. All AutoPot 12.4 gal plastic reservoirs are now supplied drilled and with 3/8″ Top Hat Grommets. You can retrofit your old 12.4 gal plastic reservoir to make it compatible with the AQUAvalve 5 and 3/8″ fittings using a step drill bit. If you don’t want to DIY it, you can purchase a new 12.4 gal plastic tank compatible with 3/8″ fittings.

AutoPot Watering Systems require no power, pumps, mains water pressure or timers to operate. All AutoPot Watering Systems operate by simply connecting to a reservoir of any size and only need gravity pressure to function. AutoPot Watering Systems are undoubtedly some of the most water efficient irrigation’s in the hydroponic market. No water is wasted, resulting in huge water and fertilizer savings of up to 50%.

Increase gravity and flows with a Tank Stand!

Supercharge your system with an AirDome!

Additional information

Top Hat Grommet Size:

3/8" (NEW AQUAvalve 5), 1/4" (OLD AQUAvalve 4 and Aquavalve 3), 3/8" – 1/4" reducer grommet (For using new trays with OLD AQUAvalve's)


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