Changing duckbill valves question

[importmonkey]

So, my pump runs every 30min to 1hr or so. Thought it's time to replace the duckbill valves. But do I replace the ones on the vacuum pump or the vacuum generator? What's the difference?



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[importmonkey]

So, my pump runs every 30min to 1hr or so. Thought it's time to replace the duckbill valves. But do I replace the ones on the vacuum pump or the vacuum generator? What's the difference?



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The vacuum pump is for the mascerator right?

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[Lazy Daze]

Vac pump/vac generator... Same thing. The macerator pump will have nothing to do with your issue. For reference, this is technically referred to as a "transfer" pump since it really doesn't do any "macerating"... Or not nearly to the extent that a true macerator does.

Another thing to check is whether or not the toilet bowl holds water. If it doesn't, the ball/seal is dirty (should be cleaned every now and again) or is worn.

 

[northern]

A few years ago my toilet did the same. Water was leaking out of bowl. Advice on this site was to put thin film a Vaseline in bowl seal O ring. I did and it stopped the problem. After that I make sure things are clean.

 

[Gofirstclass]

To keep the problem of water leaking out of the bowl, I was told by the rep from Vacuflush that when you release the spring loaded pedal to let it snap back up rather than easing it up with your foot. That "snapping" motion apparently helps to keep the ball clean.

 

[importmonkey]

Thanks guys. No leaking from bowl.

Interested to see how this thing is put together. Hard to envision it with all that plastic in the way.

One main concern is, when I loosen the nipples and adapters at the pump...where do they go? I mean, they have to move out (nature of threads) but wht are the nipples go to?

I'm a little nervous after wrestling all day with the fresh water supply lines under the head sink. Changed the faucet (no surprises or issues) until I repressurize and get leaks around fittings I never touched. Really don't want to be wrestling with leaks in the waste system.

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[cod]

The adapter that houses the duck bill is attached to the white piece of pvc (#9 in diagram) and the horizontal white pvc in your photo. The white pvc pipe is only slipped into the tank thru a rubber seal and can slide in and out giving you the movement you are concerned with. Put some Vaseline on the white pvc before you start to unscrew the adapters so it slides further into the tank easier. The other end with the other 2 duck bills not visible in your photo should be connected to a hose so that is easy enough to remove. Good luck and you'll see it's pretty easy.

 

[katricol]

I say change them all

 

[importmonkey]

The adapter that houses the duck bill is attached to the white piece of pvc (#9 in diagram) and the horizontal white pvc in your photo. The white pvc pipe is only slipped into the tank thru a rubber seal and can slide in and out giving you the movement you are concerned with. Put some Vaseline on the white pvc before you start to unscrew the adapters so it slides further into the tank easier. The other end with the other 2 duck bills not visible in your photo should be connected to a hose so that is easy enough to remove. Good luck and you'll see it's pretty easy.

Right on. Thanks.

Put off the job until another day. Found another supply line leaking that needed attention first. Got the duckbills on the boat so may change them during the season if needed. Had the head on the whole day I was out there and it didn't cycle once.

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[Mike Blake]

I say change them all

I Agree !!

 

[Southpaw II]

Agreed on the "change all", but in addition, when you buy these, buy an extra set to keep on the boat. Consider it part of your "emergency kit". Also, go ahead and buy the Bellows (13) and the O-Ring below it(5). The duckbills are a routine maintenance thing, but sometimes (and eventually) the bellows will develop a small split and leak very slowly, just like a duckbill leak. After you remove the plastic cover (single screw), you can see that there's only one way to disassemble this thing. Take your time, and don't over tighten the re-assembly. It's plastic. Good luck.

Don