While pumping out my holding tank, I heard a crackling sound of fiberglass. Stopping the pump out, I noticed the holding tank was starting to implode and the fault was a blocked vent line. To prevent a disaster happening in the future, I installed two Tanksavers from Sealand. These offer a one way valve which will open if it detects too much vacuum inside the tank. With those big dockside suction units, this could be the one thing that could save your tanks.
A three inch hole saw and a Tanksaver kit from sealand costing about $20 is required.
Find a flat surface on your holding tank top surface and drill the 3 inch hole. Push in the rubber ring and then coat the valve insert with dish washing liquid and push in. That's all there is to it. Just a ten minute job on each tank.
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| Hole drilled and rubber insert placed |
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| Finished product |
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