Kink in waste inlet hose. Add elbow or new hose with new hole

[SVMare]

The first photo of the hose is upside down. Apologies. Hello everyone, have a 70s boat with a retrofitted holding tank. The implementation was not perfect.

There is a kink in the holding tank inlet hose between the toilet, wall, and tank.

My question is whether I should add a 90 degree fitting at the kink. Or if I should make a new hole at a higher point in the wall to use one solid line of hose. Would this cause an issue?

[thinwater]

I would try to make the existing location work first. Installing a 90 is common practice. I would make the pipes on each end long enough to attach hoses in convenient, reachable places.


Obviously, flush a lot of freshwater before starting work. Vinegar first, sitting for 15 minutes, will also help.

[SVMare]

Originally Posted by thinwater

Obviously, flush a lot of freshwater before starting work. Vinegar first, sitting for 15 minutes, will also help.

Yes, I am dreading what shall come out

[Bellinghamster]

Less fittings is better, especially 90 degree elbows. It looks to me like if you moved or angled the hole (or a bit of both) slightly you could get rid of the existing 90 (which appears to be contributing to the problem) and just have a hose-only run between toilet and tank with manageable sweeping curves. I don't think you need to move it nearly as far as you showed on your sketch. 10 minutes with a rasp / half round file / grinder to take the "corner" off the bottom of the hole (towards the tank) so the hose can pass through at an angle will likely get you there.

Also, soaking the new hose in hot water will make it more pliable and ease getting it routed.

If it were me... pull the "tank" end hose off the 90 elbow while keeping it kinked and put the stub of 90 in a heavy plastic bag and tape/hoseclamp it in place. Lift it over the stringer behind it to unkink the hose and let whatever is in there drain into the bag. Cut the hose above the elbow and put the stinky bag in a bucket and off the boat or at least on deck, then disconnect the remainder of the hose from the head and pull it out.

[SVMare]

Originally Posted by Bellinghamster

Less fittings is better, especially 90 degree elbows. It looks to me like if you moved or angled the hole (or a bit of both) slightly you could get rid of the existing 90 (which appears to be contributing to the problem) and just have a hose-only run between toilet and tank with manageable sweeping curves. I don't think you need to move it nearly as far as you showed on your sketch. 10 minutes with a rasp / half round file / grinder to take the "corner" off the bottom of the hole (towards the tank) so the hose can pass through at an angle will likely get you there.

Also, soaking the new hose in hot water will make it more pliable and ease getting it routed.

If it were me... pull the "tank" end hose off the 90 elbow while keeping it kinked and put the stub of 90 in a heavy plastic bag and tape/hoseclamp it in place. Lift it over the stringer behind it to unkink the hose and let whatever is in there drain into the bag. Cut the hose above the elbow and put the stinky bag in a bucket and off the boat or at least on deck, then disconnect the remainder of the hose from the head and pull it out.

This method sounds slightly less frightening