The marina that I'm at has a portable sewage tank on wheels with a manual pump like the one in the link
https://www.amazon.ca/Whale-Marine-...ocphy=9000994&hvtargid=pla-571845011678&psc=1
There is a small hose coming out of the tank at the top looks like it's just used for a vent.
Id like some info on how the hand pumps work. My intent is to use a vacuum compressor of sorts say from an old fridge and connect it to the vent hose to create a vacuum in the portable holding tank but I'm not sure how the manual pump is made not sure if the waste would flow freely through the valve without pumping it
Any thoughts
https://www.amazon.ca/Whale-Marine-...ocphy=9000994&hvtargid=pla-571845011678&psc=1
There is a small hose coming out of the tank at the top looks like it's just used for a vent.
Id like some info on how the hand pumps work. My intent is to use a vacuum compressor of sorts say from an old fridge and connect it to the vent hose to create a vacuum in the portable holding tank but I'm not sure how the manual pump is made not sure if the waste would flow freely through the valve without pumping it
Any thoughts