Volcano Easy Valve Herb Filling Chamber — the upgrade that makes packing painless
The Volcano Easy Valve Herb Filling Chamber is a Storz & Bickel accessory that swaps the fiddly original chamber for a wider, stainless-steel design that loads dry herbs in seconds. If you've ever tried to pack a regular Volcano chamber with slightly sticky flower and ended up with half of it on the kitchen counter, this is the fix. Built for the Volcano Classic, stainless where it needs to be, and it ships with all the bits to bolt it on.
Why this chamber beats the stock one for dry herb
The standard Easy Valve chamber was designed as an all-rounder. This one is built specifically for herb — the opening is wider, the walls are stainless, and you can actually see what you're doing when you pack it. We've had customers bring in their Volcanos for a chat about performance issues, and nine times out of ten the "my Volcano isn't hitting right" problem is a badly packed chamber, not the machine.
Consequence of a lousy pack: uneven vaporisation, wasted material, and a balloon that fills slowly or tastes flat. The Volcano itself is purely convection — hot air passes through your herb at a precise temperature — so if the airflow is choked by a dense pack or bypasses the material through a channel, you lose efficiency. According to a 2006 study on Volcano vaporiser performance (Hazekamp et al., PubMed 16637053), THC delivery was "systematically improved to its maximum, while preventing the formation of breakdown products of THC, such as cannabinol or delta-8-THC" — but that's only true when airflow through the chamber is even. Better packing = better delivery.
The stainless valve on this version is the other quiet upgrade. The original plastic valve assemblies do their job, but stainless handles heat cycles without warping or picking up residue the same way. If you run your Volcano daily, that matters over the course of a year.
What's in the box
| Item | Purpose |
|---|---|
| Herb filling chamber (stainless) | Main loading chamber with wider opening |
| Chamber housing / cap | Secures the herb and seals the chamber |
| Screens | Fine and coarse mesh for the chamber base and top |
| Mouthpiece adapter | Connects the chamber to Easy Valve balloons |
| Normal-sized Easy Valve adapter | Ensures compatibility with Volcano Classic base |
Compatibility — Classic only, not Hybrid
This chamber is built for the Volcano Classic. The Volcano Hybrid uses a different valve system (the Hybrid has its own tube and balloon attachments), so if you're on the Hybrid, you want a different accessory. Double-check your base model before ordering — the heating element housing on the Classic is the round silver unit with the temperature dial; the Hybrid has a digital display and a tube port on the front.
Volcano Classic: compatible — this is the chamber for you.
Volcano Hybrid: not compatible — use the Hybrid-specific filling chamber instead.
Volcano Medic / Medic 2: check the Medic valve system; the Easy Valve range pairs with specific Medic configurations only.
How to pack it properly
- Grind your herb medium-fine. Too coarse and the hot air channels straight through; too fine and it clogs the screen.
- Open the chamber and drop the ground herb in until it's about level with the rim — don't compress it.
- Give the chamber a gentle tap on the table to settle the material evenly.
- Place the top screen in, then screw the cap on snugly (not gorilla-tight).
- Attach the chamber to the Volcano Classic's heating element, fit the balloon, and let it fill at your chosen temperature.
- Most Volcano users run between 180–200°C for flower; research on the Volcano Medic notes 210°C as an often-cited reference point for cannabis vaporisation.
Honest limitations — what to know before you buy
Two things worth flagging. First, the stainless chamber runs hot after a session — wait a minute before handling it or use the cap. Second, this is a Classic-only accessory. If your Volcano is a Hybrid, this chamber will not fit the tube system and you'll need the Hybrid-specific part. We've had a few returns over the years from people who didn't check — it's an easy mistake.
Also: this is a filling chamber, not a full Easy Valve starter set. If you're missing balloons or mouthpieces, you'll want those separately or as a bundle.
Complete your Volcano setup: pair this chamber with the Easy Valve Balloon Set for fresh balloons and mouthpieces, or grab the Storz & Bickel Grinder for the medium-fine grind this chamber prefers. A cleaning brush set keeps the screens clear — resin build-up on the mesh is the silent killer of airflow.
Specifications
| Brand | Storz & Bickel |
| Product type | Herb filling chamber (accessory) |
| Compatibility | Volcano Classic |
| Valve material | Stainless steel |
| Heat resistance | High — designed for continuous vaporiser use |
| Chamber design | Wide-opening herb-specific |
| Includes | Chamber, cap, screens, adapters |
| SKU | VS0316 |
Frequently Asked Questions
Does this fit the Volcano Hybrid?
No. This chamber is designed for the Volcano Classic valve system. The Hybrid uses a different tube and balloon mechanism and needs its own filling chamber.
Do I still need the original Easy Valve balloons?
Yes. This is a filling chamber only — it replaces the chamber where you load herb. You still need Easy Valve balloons and mouthpieces to capture and inhale the vapour.
How much herb does the chamber hold?
Roughly 0.3g of medium-fine ground flower packs evenly without compression. You can push it to around 0.5g if you like a denser balloon, but don't over-pack — airflow suffers.
Can I clean the stainless chamber in alcohol?
Yes. Storz & Bickel recommend isopropyl alcohol (90%+) for the metal parts and screens. Let everything dry fully before reassembly. Skip the alcohol on any plastic or silicone components.
Why does my Volcano take longer to fill a balloon with this chamber?
Usually either the screens are clogged with resin or the herb is packed too tight. Clean the screens weekly if you're a daily user, and keep the grind medium-fine — not powder.
Is stainless steel safe at vaporisation temperatures?
Yes. Stainless steel is inert at the 180–210°C range a Volcano operates in and doesn't off-gas or leach. It's the same reason Storz & Bickel use it on medical-grade Volcano Medic components.
Last updated: April 2026
