Valve type
Dunlop (Woods) valve: how to spot it and inflate it
How to recognize a Dunlop or Woods valve, why a Presta-compatible head inflates it without unthreading the ring, and the pump heads makers list for it.
Also listed as DV, Woods valve, Dunlop valve
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Short answer
A Dunlop (Woods) valve has a narrow tip over a large locking ring. Park Tool says it takes a Presta-compatible head without unthreading the ring, and that it is found on less expensive bikes outside the United States. Lezyne's Dual Valve floor head lists it by name. Confirm yours with the valve finder.
Key facts
- How to recognize it
- A narrow stem top with a large locking ring beneath it (Park Tool).[1]
- Stem diameter
- Not confirmedPark Tool gives no Dunlop diameter.
- Valve core
- Not confirmed
- Pump heads makers list
- Park Tool says a Presta-compatible head inflates it without unthreading the ring. Lezyne lists Dunlop on its Dual Valve floor-pump head.[1][2]
- Adapters and extenders
- Not confirmed
- Schwalbe code
- DV (Dunlop)[3]
- Adding sealant
- Not confirmed
- Heat caution
- Not confirmed
- Tools
- Not confirmed
- Not confirmed
- Park Tool gives no Dunlop stem diameter, and we read no maker source on Dunlop cores, core tools or sealant. Park Tool's 'less expensive bikes outside the United States' is the only placement statement we found.[1]
Watch out for
- You do not need to unthread the ring to pump: Park Tool says a Presta-compatible head works with it in place.
- A head its maker lists only for Presta and Schrader is a Dunlop fit through Park Tool's Presta-head guidance, not through the maker's own list.
- Lezyne's Dual Valve floor head names Dunlop; its Slip Fit hand-pump head is Presta-only.
What fits
Product details below are the seller's own description unless a source is shown. Pick the variant named for each item.
Floor pump
Topeak JoeBlow Sport III floor pump (160 psi, TwinHead DX)Choose the JoeBlow Sport III (TJB-S6); it is the only version listed.
Topeak lists a head for Presta and Schrader; Park Tool says a Presta-compatible head inflates a Dunlop valve without unthreading the ring.
Floor pump
Park Tool PFP‑10 Home Mechanic floor pump (160 psi)Choose the PFP-10; it is the only version listed.
Park Tool lists a head for Presta and Schrader, and says a Presta-compatible head inflates a Dunlop valve without unthreading the ring.
Next: Presta vs Schrader vs Dunlop and dual-valve pump heads explained.
Questions
Can I use a Presta pump on a Dunlop valve?
Yes, according to Park Tool: a Presta-compatible head inflates a Woods/Dunlop valve without unthreading its ring.[1]
Where are Dunlop valves found?
Park Tool says the Woods/Dunlop valve is found on less expensive bikes outside the United States. Check your own valve rather than going by the bike.[1]
What does DV mean on a tube?
Schwalbe uses DV for Dunlop, alongside SV for Presta, AV for Schrader and SCV for its Clik Valve.[3]