material watertanks

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Siler Starum's picture
Siler Starum
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Joined: 4/20/18
Posts: 113
material watertanks

What are the exact material details of the white plastic watertanks and BW holding ?
Is this PE, HDPE or something else?

I want to do something to the weak and micky-mouse construction of these tanks by "welding" reinforcement strips on the top, make the vent connections bigger and fit a decent inspection cover. 

Even with static pressure caused by a full forward water tank the aft-tanks are deformed like a balloon and now even causing the inspection cover to leak as the rubber O-ring is pushed out and filling the bilge whilst the vent is normal open and overflowing when the tanks are full.
(from previous old posts I read that it seems that this abnormal phenomenon became an issue as normally to be accepted by many users - similar as the tiny venting of the BW holding tank which gives always problems when pumping the head contents to the tank) 

 

Durk Nijdam
S/V "SILER"
Catalina 36MKII - 2001 / hullnr. 2013
Stavoren - Holland

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Sojourn
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Posts: 163

Hi Durk,

I believe Ronco made the tanks for the early Catalinas.  Here's ther website.  I used on of their tanks to replace my holding tank in 2004.  I works fine, I have not replaced by water tanks their still holding up.
Regards,

Lou
 

Lou Bruska
Sojourn
1985 C-36 Mk-I TR #495
Eldean Shipyard
Lake Macatawa (Holland, MI) Lake Michigan
Rallyback@comcast.net

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Sojourn
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Posts: 163

Lou Bruska
Sojourn
1985 C-36 Mk-I TR #495
Eldean Shipyard
Lake Macatawa (Holland, MI) Lake Michigan
Rallyback@comcast.net

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