Last Time out there between 2002 and 2008ish. There where two types of cylinder in Spain. (ignoring camping gaz), Repsol and Stainless steel ones which ????? (Could be Total?). The Orange Repsol has a Snap on Regulator. which you can buy from a "Feretarrier" (Ironmongers!!!). The Bottles could be purchased (but they wanted to "inspect" your Gas Rig. Obviously for a "FEE"). Most where therefore "Acquired" via one of the many "Flea Markets", Mine came from Benidorm!, and cost 10E!. As For Portugal I am not sure but would venture to suggest they may be the same?. Have you tried Googling Repsol?. that may give you a clue?.
First time we went to Spain and Portugal we had English type Calor bottles ( Prior to fitting
Gas-it refillable system ) We found a gas supplier on the coast at the border between the two countries and he had every connector known to man and he topped up our bottles !!
We found a place just off the N125 (on the Algarve), near the town/village of Boliqueime (N37*07.688 - W008*09.556) where we able to get our lightweight calor gas bottles filled. The guy did not bat an eyelid, he just went and got the right connector and filled the bottles (about €10.00per bottle if I remember right). There were a number of other vans there at the same time having getting their gas bottles filled. Hope this helps.
Nice to know nothing has changed then!! There was always the little guy in a back street somewhere who would fill "non local" cylinders and in my case a 120l fixed American tank!!. for which I had about 6 different fitting adapters!!!
Hey!! Mick and Pat, Nice to see you still about! I was was on-line some weeks back with a guy who remembered the old ARVM? . And I had an E-Mail from Parc Verger. they are about to retire. Had another e-mail from John they are running the "Brits Rally at quartzite again on or about Feb 10th, Not going to make it though as "her indoors" is up for surgery 11th Feb (IF they don`t cancel for the 2nd time!!)