Our PO had replaced the original black tank with one in the frame and didn't bother to vent or seal the toilet input pipe correctly. We boondock up to two weeks, so the original 13 gallon tank isn't large enough. We are looking to replace the current 20 gal. tank with an approximately 25 gallon tank in from Pelland. 49-3/4 x 17 x 9 Holding Tank 24 Gallon 07-H68M
$340 or 46 x 22 x 8.5 Holding Tank 25 Gallons 03-H988
If I got the sales person right one is ABS and one is plyethylene? Which is better?
tanks are made from polyethylene plastic resin by way of the rotational mold process. What you get is a one piece, solid plastic tanks that is built for the long run. You can not glue to polyethylene as you could abs.
From Wiki - The most important mechanical properties of ABS are impact resistance and toughness.
Most commercial polypropylene is isotactic
and has an intermediate level of crystallinity
between that of low-density polyethylene
) and high-density polyethylene (HDPE
). Polypropylene is normally tough and flexible, especially when copolymerized
with ethylene. This allows polypropylene to be used as an engineering plastic
, competing with materials such as ABS
Other burning questions: Any reason to not vent by attaching vent pipe into the toilet attachment pipe avoiding another fitting in the black tank? Can a screw type attachement be put in the tank to accept the toilet connection or does it have to be a gasket. Is Valterra the best dump valve to use? Is they type where the shower drain attaches
Next up, we may install a grey tank in the next frame bay in front of the rear section for the shower. Right now when we boondock, we are catch ing the shower water and then disposing it. A grey for the sinks has already been added just behind the fresh water tank.
Followed up by; adding sensors to avoid the flashlight beam down the black tank and fun freshwater fill game along with do you think the grey tank is going to make it until the end of the trip???
Look forward to all the great advice we get from you folks. Haily, the Constructor, and I all appreciate you.