replacing holding tank and tubing - SailNet Community
 
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post #1 of 6 Old 12-25-2012 Thread Starter
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replacing holding tank and tubing

Advice desired:
I will be replacing my entire holding tank soon, (including all tubing and both valves/seacocks at he thru-hulls. This will be a multi-wee
k venture, and my main concern is is that I go swimming (in the VERY cold) water, to plug up the thru hulls, then get everything removed.. for ordering and measuring etc,....... and in the interim (2-5 weeks) the plugs malfunction and my baby takes a dive.
Am I just being paranoid ? Or should I really take al measurements, first.... order everything needed...and then try to do it all in a day oor 2 while I am at the marina and not 200 miles away.
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post #2 of 6 Old 12-25-2012
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Re: replacing holding tank and tubing

I have never tried that before. And, yes that would make me a little paranoid. Can you figure out the sizes of everything w/o removing them?

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post #3 of 6 Old 12-25-2012 Thread Starter
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Re: replacing holding tank and tubing

Probably so. but I have several conical shaped plugs that will fit into any thru-hull hole. So I was just trying to be "efficeint" however, I don't think the effceincy is worth the potential down side in this case. leaving my boat unattended for 3-4 weeks, with nothing more than a cone shaped plug in the 2" thru hull.
I can't foresee anyhting going wrong..... but it just "feels" really wrong....
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post #4 of 6 Old 12-26-2012
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Re: replacing holding tank and tubing

I would be nervous too, if it were just a few plugs pounded into some holes in the bottom of my boat that was keeping it afloat.
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post #5 of 6 Old 12-26-2012
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Re: replacing holding tank and tubing

Why don't you just leave the seacocks on for now, and remove them only when you have the new ones??


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Originally Posted by tapske View Post
Advice desired:
I will be replacing my entire holding tank soon, (including all tubing and both valves/seacocks at he thru-hulls. This will be a multi-wee
k venture, and my main concern is is that I go swimming (in the VERY cold) water, to plug up the thru hulls, then get everything removed.. for ordering and measuring etc,....... and in the interim (2-5 weeks) the plugs malfunction and my baby takes a dive.
Am I just being paranoid ? Or should I really take al measurements, first.... order everything needed...and then try to do it all in a day oor 2 while I am at the marina and not 200 miles away.
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post #6 of 6 Old 12-26-2012
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Re: replacing holding tank and tubing

If I understand you correctly you are replacing everything from the tank to the thru hulls and seacocks. Why wouldnt you just get the correct hose size measured to fit the new seacocks.

Discharge hoses generally are 1.5 inches- 38mm ID, and vent hoses are generally 1/2 or5/8 in-16 mm ID.

I would suggest you dont scrimp on the hoses as this is where many odors eventually come from. We used the Trident 102 green stripe hose.

There are various threads and posts on Sailnet with great information on how to reconstruct you whole system. My advice here is dont go cheap or short cut things here and plan it through beofre starting. We were able to redo ours in a weekend, and the mnost difficult part was removing the old.

We have a new head going to a Ronco 36 gallon tank. at the bootom of the tank a 11/2 inch bronze ball valve to prevent sewerage from laying in the hose, which leades to a PVC three way valve. One lead goes to the deck pump out the other to a macerator and the thru hull. We use only fresh water in the toliet but left the salt water connected to use in an emergency. Also most importantly was the vent hose which is a straight a run as possible to the outside vent to encourage aeorbic bacteria in the tank.

Dave


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