Grav Large Circuit Dab Rig


2 in stock


Grav, hands down are the masters of glass, scientific producers of glass if you will. A global reputation that is hard to surpass. Built to last, highly functional and as gorgeous as glass can get. Those in the know only and always use Grav glass. When Grav makes a water pipe/dab rig/glass pipe they know what they are doing. Built strong for a smooth and easy session. Oh, and so they don’t break easily either. Beautiful enough to display anywhere in your home, if that’s how you do things.


The Circuit Rig is a glass water bubbler for the consumption of herbal concentrates/wax (AKA Dabbing). Dabbing is not really for beginners to the 420 world, as it can be incredibly intense and harsh. For those of you that are a feeling a little cautious, the inclusion of water and using a quartz banger/nail for low temperature dabbing can help to moderate the experience.

This is a unique dab rig that enables you to cool and smooth out your vapour not just once as per standard rigs but twice. And yes, it is vapour even though you are using a lighter (combusting) as you are lighting the outside of the banger/nail to heat the concentrate within. The water chamber is stacked with one atop the other. Once lit your vapour will travel along the down stem to enter the lower water chamber where it will spin rapidly and form a centrifugal force. This is the first stage of cooling/smoothing out your vapour. 2 angled channels that sit between the 2 chambers allow for your vapour (and some water) to move up to the upper chamber and the second phase of cooling/smoothing/filtering can begin.

The spinning movement occurs due to the angled intake holes. The first are located at the base of the down stem, 2 channels that start the spinning process within as your vapour is forcing into the water. The water/vapour mix will visually mesmerise you as it works it way round and round the chamber till the upper intake holes are reached. The spinning process is then repeated within the second chamber. As visually a spectacle as it is, that is not the main reason that one should purchase this rig. This is a glass piece designed to increase comfort for the user. A cooler, smoother and cleaner result.

Splashback I hear you mention. Grav has worked hard to ensure spinning water does not make its way anywhere you do not want it to. A piece that allows for deep inhalations that create vast turbulence. This is achieved in 2 ways. Firstly, there is a narrowing between the top chamber and the mouthpiece tube. This mouthpiece is on the longer side but most importantly it is angled sharply (another angle!) to one side helping to keep all the water where it need to be.

TIP: Grav recommends that you use  about 0.5” (just under 1.5cms) of water for optimal performance.


Instead of the usual Quartz Banger that most of the rigs I sell in my super-cool Herbal Vape Store (!) come with, there is a 14mm Vertical Quartz Domeless Nail provided with the Large Circuit Rig. Quartz domeless nails are very highly regarded amongst connoisseurs as they provide incredible flavour and complete vaporisation of your herbal material. Quartz holds an even temperature and is exceptional for low temperature dabbing. Domeless nails are known to heat rather fast and to retain their heat but they do require the use of a carb cap (can be used without one though).

TIP: In case you want to use the nail with other rigs – is made to fit over male 14mm joints.

Measuring: 17cms tall and approximately 11cms at its widest.


  • x1 Grav Circuit Large Rig (The word circuit does not appear on this rig as seen in photo, instead it says GRAV in frosted lettering)
  • x1 14mm Quartz Domeless Nail (female connection)


  • Durable Borosilicate Glass
  • Quartz Domeless Nail
  • 14mm frosted male joint
  • Double Circuit Percolation System
  • Double cooling and smoothing effect
  • Stacked chambers
  • For use with concentrates
  • Length/height: 7”
  • Designed by: Justin Couturier

**This is a collectors item and at We are Lux we don’t encourage the breaking of any Australian laws.**

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