There is a very nice place called Camping World. THey help sponser this place.
http://www.campingworld.com/search/index.cfm?Ntt=sewer+hose&N=0&Ntx=mode+matchallpartial&Ntk=primary&Nty=1&Ntpc=1 You should be able to find what you need online, or perhaps at your local RV parts store.
I like the Rino sewer hose, it is fairly thick, and you can pull it out to the full length, and it will stay there.
You can buy couplers, fittings that are fairly leak resistant for each end of the hose, ect.
I have sealed the ends with silicon (bath and tub water resistant sealer) and a hose clamp when required. It is best to test with a lot of water (empty the grey tank and make sure it is not leaking before empty the black tank) because if you have a leak, better to have water - not black tank leak out.
I like the red connections, with built in molded fitting on the ends. They sell one that has two pieces 90 degree connection on the end. With them separated, you can fit the small end into the 4" X5' section of black pipe that I secured to the bottom of my RV around the septic compartment. I have a coupling and pipe plug on one end, the other butts up against my storage compartment door (but is under the RV) so I can pull out the hose while door is open and it is secure while traveling. The other 1/2 is a screw in connection with 3" and 4" threaded section, that will stay well connected - even when streached to the ground side of the RV park connection.
Another alternative is to buy a 4" (or 3" as required) threaded 90 and screw it into the cleanout - thus having something to extend the clean out over to under your RV, within 10' or so of the septic clean out location. But that might require permission of the owner, and then a hack saw to remove the parts when you move the RV.
Once I was in a RV park that said the local City required the septic hoses to be off the ground (for health reasons so no standing water was left in the hose). That is a real requirement by many health departments, so that mice do not chew into the hose and have a source of water. I have a aluminum thing that looks like it is a ramp for the septic hose - for that use. IT works well, and prevents the septic hose from "dipping" and retaining water.
My guess is that everyone already knows that they should leave the black tank valve closed all the time, until it is more then 1/2 full (or 3 weeks if in warm weather) and then fill it to at least 3/4 full before dumping. Then make sure that the black water tank is never empty so that the left over stuff can dry out and turn into a cracker like chip 3' square near the exit, that can become difficult to clean out. Just a friendly reminder to all the others who might not know.
Fred.
