A Water Pipe Adapter (WPA) is a small glass piece that connects your vaporizer to any bong or bubbler — giving you cooled, filtered vapor without switching devices.
What Is a WPA?
A WPA bridges your vaporizer to a water pipe via a standard 14 mm or 18 mm glass joint.
© Herb Green, CC BY-SA 3.0, via Wikimedia Commons
WPA Sizes
- 10 mm — Mini bongs and small bubblers
- 14 mm — Standard size, fits most bongs
- 18 mm — Large bongs with wide joints
Compatible Vaporizers
- Storz & Bickel (Mighty, Crafty+, Volcano) — WPA for 14 mm and 18 mm
- Arizer — Glass stems fit directly into 14 mm joints
- DynaVap — Official “Bonger” WPA for 10 mm and 14 mm
- PAX — Official WPA for 14 mm
Buying Tips
Always choose borosilicate glass — heat-resistant and shatter-resistant. Cheap soft glass adapters can crack under heat. WPAs from vaporizer manufacturers or specialist glass shops are always the safer choice.
Conclusion
A WPA is the most affordable upgrade for your vaporizer. From as little as €10–20, every draw becomes a smooth, water-cooled experience.
Connecting a WPA — Step by Step
Attaching a WPA takes about 30 seconds. Fill the bong with water first (downstem about 1–2 cm submerged). Then slide the WPA onto your vaporizer’s mouthpiece or outlet. Insert the other end into the bong’s joint — wrap a small piece of kitchen paper around it if the fit is loose.
Start your vaporizer as normal and let it reach temperature. Once it’s ready, draw slowly and steadily through the bong.
Glass, Silicone, or Metal?
Most WPAs are made from borosilicate glass — heat-resistant above 400°C, odor-neutral, and easy to clean. Cheap soda glass can crack under heat, so it’s worth avoiding. Silicone WPAs are shatterproof and flexible but can add a slight taste. Metal adapters exist for specific systems but are rare.
For most people: borosilicate glass from a reputable brand is the right choice.
Care and Longevity
Regular cleaning makes a WPA last years. Rinse glass adapters with warm water every couple of sessions. Soak in isopropyl alcohol once a week — 15 minutes is enough. Check for cracks or chips regularly; a damaged glass adapter should be replaced immediately.
A quality borosilicate WPA from a known brand costs €10–25 and will outlast many vaporizers with basic care.
WPA Sizes and Compatibility: What Fits Which Vaporizer?
WPAs come in two main diameters: 14 mm and 18 mm. The 14 mm WPA is the most common — it fits most portable vaporizers like the Arizer Solo 3, the Mighty+, or the DynaVap M Plus. The 18 mm connection is typically found on desktop devices and the wider balloon tube outlets of the Volcano Hybrid.
When buying a WPA, check three things: first, the outer diameter of the vaporizer outlet (listed in the manual or on the maker’s website); second, the inner diameter of the bong joint (14 mm or 18 mm); third, whether you need a straight or angled WPA — angled models reduce the draw angle on desktop units.
Adapters between 14 mm and 18 mm are available and inexpensive, but each transition costs some airflow. A direct fit remains the best choice for maximum vapor flow and minimum draw resistance.
Frequently Asked Questions about WPAs
Does every WPA fit every bong?
No — you need to match joint size and gender. Most bongs have 14 mm or 18 mm joints. Some WPAs are “male” (they insert into the bong), others are “female” (the bong inserts into them). Always measure or check manufacturer specs before buying.
Do I need a different WPA for each vaporizer?
Often yes. Arizer devices use their glass tubes directly as a WPA — no extra adapter needed. DynaVap has its own “Bonger” WPAs. Storz & Bickel and PAX sell official WPAs for their devices. Universal borosilicate glass WPAs also work with many models at a lower price.
Does a WPA actually improve the vaporizer experience?
For desktop units and powerful portables: definitely yes. The vapor becomes cooler, smoother, and less irritating — especially at higher temperatures. If you already vape at 160–170°C, the difference is less dramatic.
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