SnowWolf Mfeng UX Tank

Twenty-eight millimetres across, mesh coils rated at 0.13ohm, and a triple-slotted adjustable airflow ring on the bottom. The SnowWolf Mfeng UX is a stainless steel sub-ohm tank built for direct-to-lung vapers who want warm, dense clouds without fiddly settings.

2ml TPD-compliant capacity in the UK version, sliding top fill so there is no cap to unscrew, and a gold-plated 510 connection that sits cleanly on most modern DTL Tanks and regulated mods. Two WF-M mesh coils included in the box. Four finishes in the store picker. Over 18s only.

Why vapers choose the Mfeng UX:

• Mesh heating at 0.13ohm covers a broad surface area inside the coil housing, which translates to faster, more even heating and noticeably sharper flavour compared to traditional round-wire sub-ohm coils

• Triple-slotted bottom airflow gives you real control over draw resistance, from a slightly restricted lung hit with one slot open to wide-open cloud production with all three

• Sliding top fill with a single port means refilling takes a few seconds without removing the tank from the mod or unscrewing any caps, and the seal is tight enough to prevent pocket leaks

• Two coils in the box so you are not immediately hunting for replacements the moment the first one fades

• Gold-plated 510 threading resists corrosion and maintains consistent conductivity across hundreds of connections

SnowWolf Mfeng UX Tank Features

Mesh at 0.13ohm Changes the Maths

The WF-M coil sits at 0.13ohm, which is low enough that the mesh element reaches operating temperature almost instantly. Larger heating surface, faster ramp, cleaner flavour from the first draw. At the rated 50 to 90W, the mesh distributes heat evenly across the cotton rather than concentrating it in a single wire. That consistency matters for flavour accuracy. If you are running other sub-ohm coils above 0.2ohm, you will notice the difference. Worth checking the full Vape Coils Range if you are comparing options.

Triple Airflow Slots, Not Just a Single Hole

Three separate slots on the bottom ring. Turn it, and you can close one, two, or all three independently. Fully open delivers a loose, airy draw suited to cloud-chasing at 80W or above. Close two slots down and you get a warmer, more concentrated DTL pull with tighter resistance. Most sub-ohm tanks give you one adjustable slot. Three is genuinely more versatile.

Pyrex Bulb Glass That Takes a Knock

The tank section uses reinforced pyrex glass in a bulb profile. Pyrex handles thermal cycling without cracking, which matters when you are chain-vaping at high wattage. The bulb shape also increases the visible juice level, so you can see when you need to top up without guessing. A spare glass tube ships in the box. If you go through tanks frequently, keep a few extras from the Replacement Tank Glass collection.

Slide, Fill, Close

No threading. No cap to lose. The top section slides open to reveal a single fill port large enough for most bottle nozzles. Slide it back and it locks. That is the entire refill process. Sounds minor until you have done it one-handed at a desk while still reading something on screen. Honestly, once you have used a sliding fill system you resent going back to screw caps.

810 Drip Tip, Low Profile

The stock 810 drip tip sits low against the top cap rather than extending upward like some sub-ohm tanks. Comfortable on the lips, wide enough for a full DTL draw, and it is a standard 810 fitting. Swap it for any aftermarket 810 tip from the Drip Tips And Mouthpieces section if you prefer a different profile or material.

SnowWolf Mfeng UX Tank Colours

Four finishes in the store picker. Each uses the same stainless steel body with a different surface treatment.

#buttons

• Black
• Blue
• Gold
• Stainless Steel

How to Set Up the SnowWolf Mfeng UX Tank

Short setup. The hardest part is being patient with the priming.

1. Unscrew the base of the tank from the glass section. Remove the pre-installed WF-M mesh coil if you want to inspect it, or leave it seated.

2. Drip four to five drops of e-liquid directly onto the exposed cotton visible through the side ports of the coil. Rotate the coil and apply drops to each port evenly.

3. Screw the coil back into the base (clockwise, finger-tight). Do not overtighten or you will strip the threading.

4. Reattach the glass section and slide open the top fill port. Fill with your preferred high-VG e-liquid to just below the max line. Slide the top closed.

5. Stand the assembled tank upright for a full seven minutes. The mesh element has a wide surface area, and the cotton behind it needs time to wick thoroughly from all sides. Firing before the cotton is saturated will scorch the mesh permanently, and no amount of re-priming will fix it.

6. Start at 50W and take a few gentle draws. Increase the wattage gradually toward 70 to 90W once the coil is fully broken in after the first half-tank.

What's in the SnowWolf Mfeng UX Tank Box

• The Mfeng UX tank with one 0.13ohm WF-M mesh coil pre-installed and a second spare coil in the box. 

• One replacement pyrex glass tube, 

• a set of spare O-rings, 

• user manuals, 

• and warranty cards. 

No e-liquid, no mod, no batteries. You will need a regulated mod capable of at least 50W and a bottle of e-liquid to get started.

The Sub-Ohm Mesh Tank for Regulated Box Mods

The Mfeng UX was originally designed as the tank half of SnowWolf's Mfeng UX 200W kit, but it works as a standalone on any mod with a 510 connection and enough wattage to drive the 0.13ohm coil. 

That means most dual-battery box mods from major brands will pair comfortably. The 28mm diameter is wider than average, so check your mod's top plate. Anything 25mm or wider should accommodate it without overhang.

What it does not fit: single-battery mods below 50W, pen-style devices, or pod kits. The power demand and physical width rule those out entirely.

About SnowWolf

SnowWolf is a sub-brand of Sigelei, one of the longer-running Chinese vape hardware manufacturers with roots going back to the early days of regulated mods. The Mfeng line sits at the higher end of their range, built around zinc alloy mod bodies and mesh coil tanks designed for DTL cloud chasers.

SnowWolf devices tend to lean into bold aesthetics: embossed wolf logos, metallic finishes, and hardware that looks like it belongs on a shelf rather than in a drawer. The WF coil series runs across multiple SnowWolf tanks, which means coil availability extends beyond just this single model.

Stock Up and Save

Two coils in the box covers your first few weeks, depending on how heavily you vape. After that, you will want spares ready, so you are not stuck with a burnt coil and no replacement. A spare glass tube is also worth having, because 28mm of pyrex bulb glass is not indestructible no matter what the spec sheet says.

Every order from Pirate Vapes ships the same day before 4 pm. Age-verified checkout, TPD compliant stock, over-18s only. Free Pirate Post on orders over £25.

Conclusion

The Mfeng UX is a straightforward sub-ohm mesh tank that does one thing well: dense, flavourful DTL clouds from a 0.13ohm mesh coil at 50 to 90W. Triple airflow, sliding top fill, stainless steel build, four colour options. It does not try to do MTL.

It does not pretend to be a pod. It is a dedicated DTL tank for vapers who already own a capable mod and want reliable mesh performance without overcomplicating things. Browse more Vape Accessories and sub-ohm gear at Pirate Vapes.

FAQs

What coils does the Mfeng UX use?

The SnowWolf WF-M mesh coil is 0.13ohm, rated for 50 to 90W. Two are included in the box. Replacements are sold separately as part of the WF coil series.

What wattage works best?

Between 60W and 80W is the sweet spot for most vapers. 50W is the minimum. 90W is the rated ceiling. Start low and work up.

Does it fit any mod?

Any regulated mod with a 510 connection and at least 50W output. The tank is 28mm wide, so check your mod's top plate for overhang. Dual-battery box mods are the natural pairing.

Can I use nic salts in this tank?

No. The 0.13ohm resistance and 50 to 90W range make this unsuitable for nicotine salts. Use freebase e-liquid at 3mg to 6mg in a high-VG blend. Nic salts through a sub-ohm coil at this wattage would be extremely harsh.

How long do the WF-M coils last?

Depends on your liquid and wattage. Expect roughly one to three weeks per coil with regular use. Sweet or heavily coloured liquids shorten coil life. Staying within the recommended wattage range helps.

What is the tank capacity in the UK?

2ml under TPD regulations. The tank ships with a TPD-compliant glass section for UK retail.