My camper has a sewer pipe that extends straight down. Sometimes reaching underneath the camper to attach the hose to the sewer pipe is awkward, especially if the dump station is not the cleanest and...
Mike, the OP is talking about the outlet of the rv....not the hose.
Greg... are you referring to something like THIS? Camco makes straight, 45 degree, and 90 degree and usually can be found at just about any rv store and sometimes even walmart.