Intex pools seem to come with two different types of hose, one uses hose clamps to secure the ends and the other has a collar nut at the ends. It sounds like your pool has the kind with the hose clamps - if it is, you're in luck. My Intex donuts were all the hose clamp type, and after two sets of the original hoses failed after a summer of exposure, I changed to 1-1/4" nylon reinforced PVC tubing. Its ID is a little bigger than the original hoses but will eaisily compress enough to make a tight fit. You can also use standard hose barbs to transition between this tubing and your hard PVC lines. This tubing will cloud with exposure to pool water and sun but it worked for me for several seasons.