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Luckydogs
06-24-2007, 08:07 PM
This weekend the vacuflush to the hear system seems to be running longer than normal. I haven noticed in the last couple of weeks that it progressively gets worse. I checked all the fittings for leaks and water remains in the bowl, so the rings there are good.

Does this sound like bad duckbill valves, switch...........

Thanks

goblue
06-24-2007, 08:30 PM
What is a hear system?

Luckydogs
06-24-2007, 08:54 PM
HEHE, head system!

Cuttin' Edge
06-24-2007, 08:58 PM
At least I am not the only one!! Phew (or pew). I had a problem last year - they "claim" all was good....well, it's back... You go to flush - does nothing.. Almost as if the water is backing up on you instead... Went to the tank itself, disconnect the hose - you heard the pump running - so I know it's still creating a vaccum.... So ?? It's coming to the question of is something stuck in the line? ?? Or ??? Could there be a different problem?

Asureyez
06-24-2007, 09:31 PM
Sounds like the system from the china bowl to the tank is clogged. The pump keeps trying to clear it.

It's probably got a wad of shore side double ply TP, a tampon, a wad of Wetones or baby wipes, que tip or paper towel clogging things up.

The skipper has to call a Head Specialist and then rag a new one on the family or guests about special marine head rules which are:

1. Any item that did not go through a persons body is contraband in the head.

2. If TP is used, only that TP provided by the skipper is permitted.
(Use SeaLand double ply only)

3. Anything else a person desires to dispose of should be wrapped in TP or baggies and tossed in the trash (small trash bin 5-6 quart size with lid in each head) helps.

I don't know how to unclog a vacuflush and I don't want to ... I'got a phone number and that is all I want.

Good luck

Four Suns
06-24-2007, 10:17 PM
I do NOT want be known as "the vacuflush guy" on this board. But....

I put a post up on how to change out the duckbill valves. You can search here on CSR for duckbill valves and find it. That's where I would start. If your boat is a 2002 and it has the original duckbill valves, you are due for new ones.

Just because the pump is running does not mean you are getting vacuum or liquid through the system. These are fairly simple systems with two duckbill valves (one way check valves that poop fits through) on each side of a bellows pump that goes up and down. When the valves lose their elasticity, the bellows can't do much other than slosh sewage around and not move it.

Could the pipe be clogged? Yep... but the symptoms of the pump running longer and longer and water not moving like it used to on 5 year old duckbill valves tells me the right course of action.

Good luck... and read the other posts on this subject. It'll help.

ImpulseIII
06-25-2007, 06:26 AM
Boat next to ours had a head clog this weekend. The dock guys used a garden variety toilet bowl plunger to clear whatever (TP I would guess) clogged the system. Worked like a charm without having to take the head apart.

Hey Gary, someone has to be the Vacuflush guy....why not you???? :smt043 Hell, I am the guy that pisses everyone off by commenting on non boating "stuff" on the board!!!! :smt018

Luckydogs
06-25-2007, 06:47 AM
Thangs Gary, I will start with the duckbills, doesn't look like that hard DIY job!

Cuttin' Edge
06-25-2007, 07:49 AM
Mine is only a year old...so I don't think it's the duckbills ....

I will try the old plunger routine and worse comes to worse I can take a fish line from the "back end" (little Vacu humor here) and try that again...if that doesn't work...then I guess I start ripping it apart.

Anyone bored tonight?

Four Suns
06-25-2007, 07:53 AM
I had to replace mine at only a year old... I found out the kids were putting their dental floss down the toilet and it bound up the bellows pump and had acted like a net catching stuff in the valves. Why do kids have to use 20 feet (literally) of floss per flossing? It was a nasty mess and I just replaced the stuff instead of "cleaning it" and hoping it was all ok.

Cuttin' Edge
06-25-2007, 07:57 AM
Hmmm - interesting...OKk, will check it out...if I do find something - I might just tell people I have no bathroom - use a bucket or jump in the lake!

fwebster
06-25-2007, 08:26 AM
Mr. Vacuflush is probably right on the money on this one.

The only thing I'd add to the experts comments is that anything you flush containing rag content or strings can bind the bellows and hang up in the duckbills. Anything cought in them prevents their closing and creates your symptoms.

If you are going to go to the trouble to get to the dickbills, remove the bellows and clean them at the same time.

After you do t his repair and are successful, you will likely want to tatoo your "head rules" on the forehead of everyone who uses the head.

Asureyez
06-25-2007, 05:32 PM
Old Duckbills! C=R=A=P, now I got another repair on the way ... my duckbills are 6+ years old and have been faithfully sucking all the crud thrown at them for all that time.

Ummm and doesn't sound like another healty BM is PM for those things! :smt043

Ummm Headhunters, here I come.

Cuttin' Edge
06-25-2007, 05:35 PM
My plan is this tonight..
First try the old plunger - see if that works.
next option...take off the connection from teh tank and shove a snake through and see if I get lucky...then, I can look at pulling apart head and seeing what I find...I was looking on the vacuflush site and I really couldn't find these duck bills that you are all talk'n about...but ???

Asureyez
06-25-2007, 05:45 PM
Face the enemy ... see the bottom of the page item:

385310076 Duckbill Valves (2)


http://dometicsanitation.com/prodrplc.asp

Cuttin' Edge
06-25-2007, 05:50 PM
Ahhh - see that's in the pump part..

I think my problem is in the head or somewhere else...not the pump...

But, now I get what you are saying - that will be a fun one to rip apart :-)

Turtlesboat
06-25-2007, 06:24 PM
put on a body condom if you are going to rip the pump apart. :lol:

Anyway, my vacuflush is working GREAT after i took it apart and cleaned everything. It's like those airline toilets, scares the hell out of first time flushers. I had the previouse owner on the boat and he used the toilet and came out and asked if I bought a new pump. The pump is built like a tank, just can't throw certain things in there. my valves have 4 years on them and they still look good.

Four Suns
06-25-2007, 08:08 PM
I think my problem is in the head or somewhere else...not the pump...



well... "Mr. Vacuflush" here says that a toilet not flushing is not a "head" issue (I think you are referring to the toilet). These systems center around the vacuum tank which consists of a tank, duck bill valves, a bellows pump, and a vacuum switch.... Any of that not working means the "head" don't flush.

I have also had to rebuild one of my toilets due to a bum that decided to live on my boat for a bit and crapped up the system with cigarettes and tampons (don't ask). The part that went bad on the toilet for me were the rubber seals on the toilet that are against the rotating ball. They are 2 piece and if someone leaves their business in the toilet and doesn't flush, it can leak between the seals and give a foul oder in the bathroom... and the only way to get rid of it is to take the toilet apart and put all new seals on it (do the base seal as well as it is "extra" spongy). That whole saying of "if it's yellow let it mellow" does not apply to marine sanitation...

I do not want be know as the vacuflush guy... did I mention that?

Cuttin' Edge
06-25-2007, 09:25 PM
I give up....
I have tried and no luck
Randomly it will work....more than not - it doesn't
It drains now - which is good...but that's it...
Randomly it will have some "suction" to it...but that's it....

So, you got me... Time to call the Vacuuflush guy and let him play with it...

Luckydogs
06-26-2007, 12:36 PM
I called Sealand this morning and spoke with the tech support. I explained my problem and she immediatly said it was the duckbill valves gone bad and will need to be replaced. She said that it wasa simple DIY job so I have already purchased the valves and will get busy the next couple of days.

wetbar
06-26-2007, 09:28 PM
I have a 1988 Sundancer the the head sucks all the time. I thought this was normal for an older boat. How do I check the duskbills? OR is this normal for a boat my age?

Thanks fo the help

Luckydogs
06-26-2007, 09:46 PM
Wetbar, the tech advised that the duckbills last approx two years and then get soft and release air, the valves are in the vaccum generator and seems to be an easy job. I went to Sealand website and printed out the manual for my model.

wetbar
06-26-2007, 09:51 PM
I cant find Sealand on goggle. What is the complete company name? EDIT - I found it thanks again

MLauman
06-28-2007, 07:44 AM
I do not want be know as the vacuflush guy... did I mention that?

How 'bout The Headmaster ?

Hampton
06-28-2007, 08:42 AM
I'm glad I didn't know about this thread before I sold my 250. The vacu-flush head worked flawlessly for over 10 years, and hopefully still is.

gerryb
06-28-2007, 08:55 AM
Invention: Duckbill valve
Year 1998

Description
Invention patented by Robert Alfread Bennett on May 18th, 1998. Abstract: A duckbill valve is provided which includes a hollow cylindrical elastomeric body with first and second ends. The first end has walls parabolically tapering to an elongate slit, the slit being surrounded by an upper and lower lip. The second end has a non-uniformly round (e.g. oval) outer wall terminating in an open mouth. When inserted into a perfectly round apertured fitting, the non-uniformly round outer walled elastomeric body is bowed to form-fit the round configuration thereby forcing shut the lips and slit. Upon increased air pressure within the elastomeric body, the slit is forced open. In a second embodiment, the inner wall of the second end may be non-uniformly (e.g. oval) round. Insertion of a round tubular fitting within the non-round inner wall of the elastomeric body also achieves a bowed form-fit configuration which forces shut the lips and slit.

Luckydogs
06-28-2007, 08:47 PM
Can I have my "Duckbill" shirt now. Just got back from replacing my four duckbills. :smt038

Wasn't too bad of a job as I don't allow the duece in the boat, except for emergencies. :smt018

After I replaced the duckbills and reassembled the pump, I gave it the ol' testaroonie.

After the initial vaccum cycle, the pump cuts off approx. 35-40 seconds in between flushes. Does this sound about right. It is definately an improvement.

Thanks to Four Suns for the step-by-step how to on a prior post, w/out those directions, I would probably still be there figuring out how to replace the rear valves. :smt017

Luckydogs
06-28-2007, 08:47 PM
Can I have my "Duckbill" shirt now. Just got back from replacing my four duckbills. :smt038

Wasn't too bad of a job as I don't allow the duece in the boat, except for emergencies. :smt018

After I replaced the duckbills and reassembled the pump, I gave it the ol' testaroonie.

After the initial vaccum cycle, the pump cuts off approx. 35-40 seconds in between flushes. Does this sound about right. It is definately an improvement.

Thanks to Four Suns for the step-by-step how to on a prior post, w/out those directions, I would probably still be there figuring out how to replace the rear valves. :smt017

Luckydogs
06-28-2007, 08:47 PM
Can I have my "Duckbill" shirt now. Just got back from replacing my four duckbills. :smt038

Wasn't too bad of a job as I don't allow the duece in the boat, except for emergencies. :smt018

After I replaced the duckbills and reassembled the pump, I gave it the ol' testaroonie.

After the initial vaccum cycle, the pump cuts off approx. 35-40 seconds in between flushes. Does this sound about right. It is definately an improvement.

Thanks to Four Suns for the step-by-step how to on a prior post, w/out those directions, I would probably still be there figuring out how to replace the rear valves. :smt017

PMvdb395DA
06-30-2007, 12:29 AM
You want 3 shirts??? :lol: :lol:

Good job :thumbsup:

Peter

Dave S
06-30-2007, 05:34 AM
After the initial vaccum cycle, the pump cuts off approx. 35-40 seconds in between flushes. Does this sound about right. It is definately an improvement.



That sounds correct. Mine takes this long to turn off after a flush.

comsnark
06-30-2007, 06:12 AM
It's like those airline toilets, scares the hell out of first time flushers.

Hopefully. . that will discourage people from using it!

(my boat is more of a day boat. . .I tell people to take care of buisness before coming on the boat!)

Four Suns
06-30-2007, 05:11 PM
If you really want tip top vacuflush performance, you can also change out the rubber seal on the toilet that the ball moves inside of when you flush. I changed mine out this year and it was a definite improvement on performance.

Cuttin' Edge
07-01-2007, 06:46 PM
The duck bills weren't it....
Changed and no difference....So I got a spare set now!

So I then went back to ripping all apart - I was quite p*** at this point Saturday and was not giving up - disconnected all and just kept fishing and, well, now it works...put it all back together - and she seemed to work great...haven't given it a "sea trial" yet - but, in the water tests - it appeared to be good....

wetbar
07-01-2007, 08:13 PM
MY vac pump runs all the time. I repalced the duck bills. No luck! When I push the spring at the end of the tank the pump cuts off. So is that it? Do I need to replace the spring or what? What is that part called, just the pressure switch? Can I buy one at west marine or is it special order?

gerryb
07-02-2007, 08:54 AM
The switch and spring assy controls the vacuum pressure, as I recall. I would check the manual on this as I also had a similar problem 2 years ago and changed the spring setting so that it would create more vaccuum. (BTW, the switch wasn't the problem... let's just say that I ended-up placing a ptouch label on my head mirror with some basic instructions for use...).

wetbar
07-02-2007, 02:19 PM
so are you sayingI need change the springs and not the switch or is it all one kit? Where can I but it from?