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Pipe Stem

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14mm Glass on Glass Compatible

Prefer to use a Glass Bowl?  Well we got you covered!  The bowl comes standard with a 14mm glass on glass taper, so it can easily be used on other 14mm glass waterpipes or simply swapped out with a glass on glass bowl.

Bypass Valve

subzero waterpipe stem valve closed bowl burning

1) Closed: Smoke passes from bowl into base of water pipe

CNC Engraved

All markings on Stem been CNC engraved prior to anodizing, which means that the letters and logos are actually cut into the material, not just printed.  Most importantly, this ensures that the markings will literally last a lifetime without fading!


Brush Finished

Prior to anodizing the stem, we give the engraved surface a sleek and uniform brush finish by hand.  This gives the stem a very unique, reflective surface which perfectly compliments the overall machined geometry.

closeup of subzero waterpipe stem

6061T6 Aluminum,

TypeIII anodized



6061-T6 is an aluminum alloy that has been solution-hardened and artificially aged, which is then anodized at near freezing temperatures producing a thick film of anodic-aluminum-oxide (AAO).  It is typically used for fabricating:


Aircraft and Aerospace structures (AAO improves longevity)

Firearm sound suppressors

AR-15 upper and lower receivers

UHV (ultra-high-vacuum) chambers

Cookware (AAO produces non-stick, flavor-free surface)

High performance automobile pistons (AAO serves as a heat barrier)

High speed machine parts (AAO increases abrasion resistance)

Naval/Marine (AAO improves corrosion resistance)

Scuba Tanks


subzero waterpipe stem with 14mm glass bowl

Until now, clearing the chamber of tobacco smoke required the user to either pull the entire stem/bowl out of the water pipe or lift his/her finger off of a hole drilled in the side of the pipe.


With the SUBZERO waterpipe, all the user has to do is simply PUSH!  By pressing the Bypass Valve down, air is allowed to enter below the bowl, producing the same exact effect at a fraction of the effort!  When sleeve is released, it automatically springs back to the sealed position.

subzero waterpipe stem valve open pipe clearing

2) Open:  Fresh air is injected beneath bowl


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6061-T6 Aluminum Alloy


White Acetal Thermoplastic  (slide)


316 Stainless Steel spring


Nirtile and Viton Orings

Aluminum Treatment

TypeIII Hardcoat Anodized


CNC Turned and Milled


Assembly press-fitted


CNC Engraved


+/- 0.002 inches