OK, I've been searching enough for this so here's a question in hope someone can help. One of the waste pipes on my B321 connects to a 1 1/2" fitting at one end and 1 1/4" at the other end. I replaced it last year using an adaptor in the middle and 2 different size hoses but that led to some odor plus I don't like having so many connections below the waterline. When I removed the original hose I had noticed there was some kind of black rubber tape gasket (non adhesive) used as sealant on the smaller fitting to create a snug fit with the hose that is too big at that end. Anyone knows what that rubber sealant is and where I can get it? Or any other suggestions on how to deal with this other than changing the fittings.
Hose and fitting not quite right ...
- Thread starter bebebleu
- Start date
- Status
What's at each end of that hose?
Sealant of any kind isn't recommended for sanitation hose connections...they should all be double clamped instead. Besides, it sounds like a PO tried to use sealant to make a too-large hose work...never a good idea in any system. So replacing the 1.25 fitting on whatever is at that end with a 1.5" fitting and a new hose is most likely gonna be the best solution. So what's at that end???
Sealant of any kind isn't recommended for sanitation hose connections...they should all be double clamped instead. Besides, it sounds like a PO tried to use sealant to make a too-large hose work...never a good idea in any system. So replacing the 1.25 fitting on whatever is at that end with a 1.5" fitting and a new hose is most likely gonna be the best solution. So what's at that end???
A "Y" switch is at that end
Thanks Peggie, At that end, there is a "Y" switch fitting (plastic or something similar) that selects between the waste tank and a thru-hull. It looked to me like the hose I replaced was the original Beneteau installation. It is indeed double clamped. Maybe I was not using the right wording. The sealant I'm talking about was some kind of rubber gasket, like a teflon tape except it wasn't teflon, ticker and more like rubber.
Thanks Peggie, At that end, there is a "Y" switch fitting (plastic or something similar) that selects between the waste tank and a thru-hull. It looked to me like the hose I replaced was the original Beneteau installation. It is indeed double clamped. Maybe I was not using the right wording. The sealant I'm talking about was some kind of rubber gasket, like a teflon tape except it wasn't teflon, ticker and more like rubber.
My guess...
On a European built boat, the y-valve barbs could very likely be metric, which would make it just about impossible to match to any hose sold in the US...I think you proved that by trying to use a reducing adapter. It wouldn't leak odor if the smaller hose matched it. If I'm right, your best option would be to replace the y-valve and the different sized hoses with a single piece of 1.5" hose...'cuz I don't think any kind of sealant will ever be satisfactory over any length of time. I know you're hoping to avoid having to do that, but you'll only have to do it once...the alternative is a connection that'll always be a little "ripe."
On a European built boat, the y-valve barbs could very likely be metric, which would make it just about impossible to match to any hose sold in the US...I think you proved that by trying to use a reducing adapter. It wouldn't leak odor if the smaller hose matched it. If I'm right, your best option would be to replace the y-valve and the different sized hoses with a single piece of 1.5" hose...'cuz I don't think any kind of sealant will ever be satisfactory over any length of time. I know you're hoping to avoid having to do that, but you'll only have to do it once...the alternative is a connection that'll always be a little "ripe."
Sizes ...
Yes, I think you're right about the european size issue. The hose that goes from the y-valve to my 1.25" thru-hull fits well though. Everything looks like it is 1.25" or close enough size on that portion. I don't want to convert everything to 1.5" including thru-hull just to connect to the waste tank fitting that looks like it is 1.5". Can anything be done at the tank end and its 1.5" fitting?
Yes, I think you're right about the european size issue. The hose that goes from the y-valve to my 1.25" thru-hull fits well though. Everything looks like it is 1.25" or close enough size on that portion. I don't want to convert everything to 1.5" including thru-hull just to connect to the waste tank fitting that looks like it is 1.5". Can anything be done at the tank end and its 1.5" fitting?
A couple more questions...
The y-valve is in your head discharge line, providing a choice between flushing directly overboard or going into the tank...right? You sail in the Great Lakes...right? If both those answers are yes, you don't have to worry about mating a hose to the thru-hull, 'cuz you can't use it. The Great Lakes are all "no discharge"...the toilet has to flush only into the holding tank, which can only be emptied by pumpout. Or are you in Ottawa, but the boat is in coastal waters somewhere? Also...what's the make/model of your toilet?
The y-valve is in your head discharge line, providing a choice between flushing directly overboard or going into the tank...right? You sail in the Great Lakes...right? If both those answers are yes, you don't have to worry about mating a hose to the thru-hull, 'cuz you can't use it. The Great Lakes are all "no discharge"...the toilet has to flush only into the holding tank, which can only be emptied by pumpout. Or are you in Ottawa, but the boat is in coastal waters somewhere? Also...what's the make/model of your toilet?
Inland waters indeed
You figured it all out. You are right I can't use it. I still want to keep it future proof. Given my job situation, there is actually a good chance I would take my boat to coastal waters this summer. The toilet is a Jabsco compact manual I think.
You figured it all out. You are right I can't use it. I still want to keep it future proof. Given my job situation, there is actually a good chance I would take my boat to coastal waters this summer. The toilet is a Jabsco compact manual I think.
You might try a reducer
They do have PVC adaptors from 1.5" male to 1.25" female. Unusual, but plumbing houses generally have them. Don't know however what your holding tank is made of and if the adaptor PVC threads might provide adequate sealing when tightened into the female threads of the tank. Perhaps Peggie can advise on that. Years ago I had bought one exactly the opposite 1.25 male 1.5 female, but it was because the pump-out outlet was 1.25 and the pump fitting at most marinas was 1.5. And being located in Ottawa, chances are you sail in the Thousand Islands and lower end of Lake Ontario. My advice to you would be to disable the Y-valve, because you can be boarded for an inspection on both sides of the USA/Canada border. And in both cases, you can't plead ignorance: if the system is operative, you are guilty and the fines are very stiff. good luck.
They do have PVC adaptors from 1.5" male to 1.25" female. Unusual, but plumbing houses generally have them. Don't know however what your holding tank is made of and if the adaptor PVC threads might provide adequate sealing when tightened into the female threads of the tank. Perhaps Peggie can advise on that. Years ago I had bought one exactly the opposite 1.25 male 1.5 female, but it was because the pump-out outlet was 1.25 and the pump fitting at most marinas was 1.5. And being located in Ottawa, chances are you sail in the Thousand Islands and lower end of Lake Ontario. My advice to you would be to disable the Y-valve, because you can be boarded for an inspection on both sides of the USA/Canada border. And in both cases, you can't plead ignorance: if the system is operative, you are guilty and the fines are very stiff. good luck.
Male to female reducer may work
Thank you for the advice Claude with the PVC adaptors from 1.25" male to 1.5" female. I'll try to find it and see if it could do the job. Even if I disable the Y-valve, I'll need it because I find that the 1.25" hose fits my toilet fitting much better than a 1.5" hose. I've always found this funny since they sell the 1.5" sanitary hose as standard in the chandleries. Standard toilets and standard hoses don't seem to fit, isn't that strange? BTW, Lake of Two Mountains, that's where I learned to sail many years ago.
Thank you for the advice Claude with the PVC adaptors from 1.25" male to 1.5" female. I'll try to find it and see if it could do the job. Even if I disable the Y-valve, I'll need it because I find that the 1.25" hose fits my toilet fitting much better than a 1.5" hose. I've always found this funny since they sell the 1.5" sanitary hose as standard in the chandleries. Standard toilets and standard hoses don't seem to fit, isn't that strange? BTW, Lake of Two Mountains, that's where I learned to sail many years ago.
Make sure the tank material is compatible with
the PVC reducer. If your B323 was built in the USA, the tank fitting is 1.5". And if I read you right, your tank is 1.5" threaded female. Then you need to go with a reducer that is 1.5" male to 1.25" female so you can fit your 1.25" hose barb in it. We must have crossed courses on the lake as I have been playing on its waters well over 50 years !
the PVC reducer. If your B323 was built in the USA, the tank fitting is 1.5". And if I read you right, your tank is 1.5" threaded female. Then you need to go with a reducer that is 1.5" male to 1.25" female so you can fit your 1.25" hose barb in it. We must have crossed courses on the lake as I have been playing on its waters well over 50 years !
Landlubbin' plumbin'
Somewhere along the repair road most of us discover that fittings made for land-based plumbing are made to two different specs: British practice is to state the size of the fitting as the inner dimension of the covering hose (in English system, not metric) and American practice is to state the size of the fitting as the inner dimension of the fitting opening. This means that universal spec hoses you get at West Marine or chandleries will conform to British practice and be too tight for ordinary American-spec pvc non-marine fittings. The black fittings they sell to go with the hose in the West Marine catalog, however cheap and unpromising they may look, will be the right stuff for the white water/bilge/waste hoses made in Australia.
Somewhere along the repair road most of us discover that fittings made for land-based plumbing are made to two different specs: British practice is to state the size of the fitting as the inner dimension of the covering hose (in English system, not metric) and American practice is to state the size of the fitting as the inner dimension of the fitting opening. This means that universal spec hoses you get at West Marine or chandleries will conform to British practice and be too tight for ordinary American-spec pvc non-marine fittings. The black fittings they sell to go with the hose in the West Marine catalog, however cheap and unpromising they may look, will be the right stuff for the white water/bilge/waste hoses made in Australia.
Maybe on land, but marine tank fittings in the US are..
Female tank fittings are known by their ID. The male thread-barb tank fittings are known by their OD...and the hoses that have to go onto 'em are always known by their ID. So in theory, a 1.5" hose SHOULD fit onto ANY 1.5" fitting...but not if the fitting is gray PVC. For reasons I've never been able to learn, the OD of the threaded end of a nominal gray PVC 1.5" thread x 1.5" barb fitting is 1.5"...but barbed end is 1.5" ID...the OD of the barb is 1 5/8"...which makes it just about impossible to get a hose onto the damn thing. ONLY gray PVC fittings have this anomaly, and it's ONLY true of 1.5" x 1.5" thread-barb fittings, not any other size. The solution: replace any 1.5" gray PVC fitting with marelon or nylon. However, your analysis of the difficulty in getting US hoses onto British or European seacocks etc makes a lot of sense. I have no idea how to solve that one.
Female tank fittings are known by their ID. The male thread-barb tank fittings are known by their OD...and the hoses that have to go onto 'em are always known by their ID. So in theory, a 1.5" hose SHOULD fit onto ANY 1.5" fitting...but not if the fitting is gray PVC. For reasons I've never been able to learn, the OD of the threaded end of a nominal gray PVC 1.5" thread x 1.5" barb fitting is 1.5"...but barbed end is 1.5" ID...the OD of the barb is 1 5/8"...which makes it just about impossible to get a hose onto the damn thing. ONLY gray PVC fittings have this anomaly, and it's ONLY true of 1.5" x 1.5" thread-barb fittings, not any other size. The solution: replace any 1.5" gray PVC fitting with marelon or nylon. However, your analysis of the difficulty in getting US hoses onto British or European seacocks etc makes a lot of sense. I have no idea how to solve that one.
- Status