Y valve Replacement procedure?

[1 Salty Dog]

So I have to ask as I've never attempted this before and don't want to wind up with a huge mess "literally" on my hands.
I have a Newport 33 with a Manual Pump Jabsco head. I noticed at buyer Inspection that the Y Valve is Stuck in the overboard position, will not budge without breaking it off I'm sure. I bought the replacement Y Valve, and access is a breeze. My question is other than locking the toilet in no flow mode, what else do I need to do to ensure a non messy replacement?
Aside from the huge fine potential, I don't want anyone discharging stuff overboard anyway as there is a perfectly good holding tank and a local mobile pump out guy who works cheap.

Shut seacocks? Run clean water thru first? Clamp off the hoses ( although pretty sure that would ruin the hoses)?

Anyone who has done this and has advise on the "correct way" would be appreciated.

 

[Rick D]

Have Fun!

Did this a couple of times the last few years because of a bad (new) valve. Hopefully, yours does not have barbed fittings. If you can, I would recommend posting photos so we can get a better idea of what you are up against.

From your description, I will hazard a guess that the hoses and valve are calcified. If that's the case, you may wish to consider changing the hoses. That may be the easier course of action. (If so, re-post for recommendations on replacement hose.)

If you want to try just removing the Y valve, I suggest you run a gallon or two of fresh water through the system and then pump about 20 strokes on dry to clear the hoses as much as possible. Remove the hose clamps. Warm the hoses at the valve with a hair dryer (a heat gun will be too hot). Put an old towel around where you are working and under the valve (you will be tossing it). Use a channel lock pliers to see if you can crack the seal on the hose to valve joint. If you are successful, you are a third the way there. The fun part is separating the hose from the valve. It involves repeated heating, prying and tugging until done.

If you get frustrated, leave it for another day. Sometimes taking a break brings clarity. Good luck!

 

[KD3PC]

If you can find it, put just touch of menthol petroleum jelly (Mentholatum), under your nose, and then put on a mouth/nose disposable mask. Just in case a splash of honey gets you. If it does, the scent will stay with you and in your nose/sinus for days and ....

I then disconnect the "source" hose and plug it with a rag or pipe section with a cap already glued on. I use this - as one time, way back, something broke and there was no way to return the system to duty, until parts came in. This cap allowed the use of the head and such to continue.

Then I replace each leg to the y, and if all is going well, make the last to the previously plugged source.

If at all possible, as Rick mentions, I would replace the hoses with trident while you are there. and for sure make up some plugs for the hose, so you can seal them up - no leaks, until you get them off the boat. Project well worth the time, now, before you get to other things.

 

[dparilla]

I put down plastic drop cloth topped with old microfiber cloths to catch the inevitable drips. If anything spills over, have some kitty litter handy to absorb it and then use raritan KO mixed with water (1 part KO, 2 parts water) to treat the area of the spill.

 

[mz4wheeler]

So I have to ask as I've never attempted this before and don't want to wind up with a huge mess "literally" on my hands.
I have a Newport 33 with a Manual Pump Jabsco head. I noticed at buyer Inspection that the Y Valve is Stuck in the overboard position, will not budge without breaking it off I'm sure. I bought the replacement Y Valve, and access is a breeze. My question is other than locking the toilet in no flow mode, what else do I need to do to ensure a non messy replacement?
Aside from the huge fine potential, I don't want anyone discharging stuff overboard anyway as there is a perfectly good holding tank and a local mobile pump out guy who works cheap.

Shut seacocks? Run clean water thru first? Clamp off the hoses ( although pretty sure that would ruin the hoses)?

Anyone who has done this and has advise on the "correct way" would be appreciated.

I would first start by rinsing out the tank multiple times with detergent (lots of it). Fill it up, let it sit for a few days, rinse, refill. Second, if your goal is to just replace the Y valve (and keep the hoses), use a heat gun to get the existing hoses nice and pliable, so you have a good chance of removing them intact.

However, while you are mucking around this area of you boat, you might as well install a macerator pump so you have the option of pumping out the holding tank instead of using a manual pump. In the case of my hunter, the manual pump was located in the bathroom which was nasty.