[Public-List] Waste holding tank

[John Birch]

Morning Mike,

I had that problem on Wind Rose A-30 544. The input hose barb was rotted out 
likely from concentrated head chemical lodging there.

I ground off what was left of the alu barb and bought a Vetus plastic 
bladder bard, made of heavy black plastic which is flanged and has a 
tightening ring with sufficient thread. I was the same diameter.

I then had to grind flush (no pun here) the alu tank face. Then had to 
reverse the grinding pad on the drill to grind inside the tank as the drill 
would never fit in.

It took a while because you can put much pressure grinding this way or the 
bit works loose.

I bedded it with Sikkens 241 ( now 291) and re-attached the hose.

I also re taped the breather connection because it is copper and the tank 
alu. Used Teflon tape and a tiny amount to 241 on the male threads to ensure 
there was no galvanic connection.

Don't put calk on the female threads as it might squeeze into the small dia 
breather pipe and block it.

Worked fine for the 4 years after, that we kept the boat, before buying 
Sunstone.

Have not heard any issues recurring since from her new owner, so I think the 
fix was permanent.

Hope this helps.

Best

John (PS also go light on the head chemicals - I think they are the 
corrosive culprit)


----- Original Message ----- 
From: "Mike Lehman" <sail_505 at hotmail.com>
To: "A30 Public List" <public-list at alberg30.org>
Sent: Wednesday, November 17, 2010 8:24 AM
Subject: [Public-List] Waste holding tank



This question(s) are directed to the Alberg owners with the new (liner) 
boats that have a factory installed waste holding tank.

How large is the tank?
Is the tank consrtucted similar to the fresh water tank using the liner as 
the bottom with an aluminum lid as the top?
Is there an odor problem with these tanks?
Has anyone ever had the hose fitting on the forward end of the tank fail? If 
so, how did you repair it?
Has anyone removed this tank and converted the space back to storage?
Has anyone replaced this tank with a polyethelene tank in the same space? If 
so what replacement did you use?
Generally how well does this tank work?


Mike Lehman


><((((º>`·.¸¸.·´¯`·.¸><((((º>`·.¸¸.·´¯`·.¸><((((º>








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