semi-submerged pump power supply with "pistola" similar to that of gasoline

[Kaji]

Hello a client asked me to feed a semi-submerged pump in a 200-litre barrel with a "pistola" similar to those of gasoline pumps, I kindly ask if you can give me an indication maybe even a more technical name to look for a suitable device?
I found those on the site piusi.com, I was looking for something similar, thanks