Tool · Pumps
Valve finder
What valve does your bike have? Pick the valve you see to confirm it, read its stem diameter and core type, and find the pump heads whose makers name it.
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Short answer
Pick the valve you see on your wheel to open its page: how to confirm it, its stem diameter, whether its core comes out, and the pump heads and adapters whose makers name it. Confirm the valve before you buy a pump, a tube or an adapter, because a pump head only fits what its maker lists.
- Presta
- Schrader
- Dunlop / Woods
- Schwalbe Clik Valve
- Plastic (resin) valves on TPU tubes
Choose your valve type to see the key facts and what fits. Each fact links to its source on the full page.
What each valve page shows
| Valve type | How to recognize it | Stem diameter | Valve core | Pump heads makers list |
|---|---|---|---|---|
| Presta | A thin stem with a small locknut at the top that must be unthreaded before air can enter the tube. Park Tool suggests tapping the valve after unthreading so it is not stuck. | Nominally 6 mm, thinner than a Schrader stem (Park Tool). | Some Presta valves have removable cores, recognizable by two wrench flats at the end of the valve; not all are removable. Lezyne attributes many cores coming out with the pump head to cores not tightened enough at assembly, and advises checking that cores are tight. | SILCA states its Pocket Impero pumps work only with Presta. Lezyne lists its Dual Valve floor-pump head for Presta, Dunlop and Schrader, and says its Slip Fit head on hand pumps and CO2 systems is Presta-only. |
| Schrader | A wider stem with a spring-loaded core inside. Schrader-compatible pump fittings press the valve's internal stem with a plunger so the tube can fill. | About 8 mm (5/16 in) (Park Tool). | Removable: Park Tool's VC-1 removes and installs Schrader cores. | Lezyne lists its Dual Valve floor-pump head for Schrader, Presta and Dunlop. Lezyne's Slip Fit hand-pump head and SILCA's Pocket Impero are Presta-only, so check the maker's list. |
| Dunlop / Woods | A narrow stem top with a large locking ring beneath it (Park Tool). | Not confirmed | Not confirmed | Park Tool says a Presta-compatible head inflates it without unthreading the ring. Lezyne lists Dunlop on its Dual Valve floor-pump head. |
| Schwalbe Clik Valve | Schwalbe says many of its butyl tubes are available with Clik Valve, color-coded blue. | Not confirmed | Not confirmed | Lezyne lists its Clik Drive HP hand pump with a Clik Valve compatible Flex Hose and a 160 psi maximum. Schwalbe's page names no compatible pumps. |
| Plastic (resin) valves on TPU tubes | Tubolito offers its TPU tubes with Presta (SV) or Schrader (AV) valves, so check which style yours is before choosing a pump head. | Not confirmed | Tubolito says its Presta (SV) valve cores are glued in; only its Schrader (AV) valves have removable cores. | CYCPLUS says the AS2 Pro switches between Presta and Schrader without extra parts, and describes its silicone case as providing overheat protection. |
Every value comes from a maker's or tool maker's page, read on 2026-10-14. Where no source states a field, it reads "Not confirmed".
How the valves are told apart
- Presta. Park Tool describes Presta stems as nominally 6 mm in diameter, thinner than Schrader stems.[1] A Presta valve has a small locknut at the top that must be unthreaded before air can enter the tube.[1]
- Schrader. Park Tool puts Schrader stems at about 8 mm (5/16 inch).[1]
- Woods/Dunlop. A narrow stem top with a large locking ring beneath it; Park Tool says it can be inflated with a Presta-compatible head without unthreading the ring.[1]
- Codes on the box. Schwalbe uses SV for Sclaverand (Presta), AV for car (Schrader), DV for Dunlop and SCV for its own Clik Valve.[2]
Removable and glued cores
Some Presta valves have removable cores, which you can spot by two wrench flats at the end of the valve.[1] Park Tool's VC-1 page adds that not all Presta cores are removable.[3] Tubolito says its Presta cores are glued in, so only its Schrader valves have removable cores that accept sealant.[4] That statement is about Tubolito tubes only.
Next
- Presta vs Schrader vs Dunlop: identify your valve before buying a pump
- Dual-valve pump heads: what "Presta and Schrader" really covers
- Bike pumps: valve fit, pressure claims and measured inflation
- Presta
- Schrader
- Dunlop / Woods
- Schwalbe Clik Valve
- Plastic (resin) valves on TPU tubes
Choose your valve type to see the key facts and what fits. Each fact links to its source on the full page.
Questions
What valve does my bike have?
Look at the stem. Park Tool describes Presta as a thin stem, nominally 6 mm, with a small locknut at the top, and Schrader as about 8 mm (5/16 inch). Woods/Dunlop has a narrow stem top with a large locking ring beneath it.[1]
What do SV, AV and DV mean on a tube?
They are Schwalbe's codes: SV for Sclaverand (Presta), AV for car (Schrader), DV for Dunlop, and SCV for its own Clik Valve.[2]