Strange Presta valve and how to use it.

Tommygunn792

I've got a couple of bikes for the family that have what I presumed to be Presta valves, however, when I went to use my new Lezyne HV Drive on the valve it appeared to be either not working or highly inefficient and leaking because there is no physical connection and opening of the valve.
The valve externally appears to be the dimensions of a Presta valve but possibly with the internals of a Dunlop/Woods valve.
I can use a track/foot pump on the tyres with a Schrader fitting and a Presta adapter. If I use my Lezyne with either the Presta end of the hose or the Schrader with the adapter it is very hard going and I'm not certain the air is going in the tyre as the air I can hear sounds more like a leak around adapter.
Does this mean a change of inner tube or can the valve core be replaced with a standard Presta core?

Cheers,
Tom.

cooldad

I would just change the tubes, at a few £s it's not worth the faff.

stubs

It looks like a Regina valve but only ever having used one once I cant for the life of me remember how they work. Cooldad is right new tubes is the best idea.

I found this http://www.bikeforums.net/showthread.php/670058-Italian-presta-valves

Tommygunn792

That sounds like the suckers.
As Cooldad said I might just get some new inners.

Tom.