How can I fix my Ceda spa bath?

I have a ceda two person spa bath with a broken inlet connection.The connection fits at the bottom of the bath with a small hole in the centre of a chrome(plastic)disc.It has a 90 degree elbow underneath which connects to a flexible pipe.It screws into place with a washer.The pipe is 10 mil diameter(inside)and the disc is 40 mil.I will try to send photos.We live in Spain so have no chance of locating one here.
Thank you
Trevor Ashton