| Author |
Message |
s'COOL bus nut
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 12, 2005 - 12:53 am: | |
Because of certain constraints, my gray tank is going to have to be smaller than my black tank. (78 gal black - 58 gallon gray).
I was wondering if there was a pump that I could use to equalize the capacity of the tanks. I know that the gray tank will always fill up first.
The gray tank will not be higher than the black tank. (gravity fill not possible)I want to be able to pump my gray tank into the black tank.
What type of pump do I need?
thanks
Mark |
Brian Brown (Fishbowlbrian)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 12, 2005 - 1:08 am: | |
Grainger or McMaster-Carr will certainly have a pump that can handle what you need. You might get the specs. there and then head to the e-Place and see if someone's selling something that'll work for your application.
Moving the gray water is much easier than the black.
HTH,
BB |
CoryDaneRTS
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 12, 2005 - 1:40 am: | |
I read an article of a bus where the gray tank was purposly kept small and the large black water tank would take the overflow.
the gray would overflow to a trap and then dump to the black tank.
It also had provision to dump the gray directly to the sewer, bypassing the black.
The Black tank was close to the size of the potable tanks however.
Made sense when I read it.
cd |
Jim (Jim_in_california)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 12, 2005 - 4:35 am: | |
You're in luck, because the gray tank shouldn't have anything "chunky" in it (ewwww). Which means the same basic type of 12v pump we use to deliver freshwater from the fresh tank over to the sink/shower/etc. can be plumbed such that it diverts gray over to black.
This would be a DIFFERENT pump than your normal fresh pump of course! But it can be the same type, worth like $30 or less.
To go from black to gray (or a second black) would require a "macerator pump" worth more like $300, with it's own "chopper blades" to render the "chunky stuff" pumpable. |
Geoff (Geoff)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 12, 2005 - 7:52 am: | |
A 12v Jabsco "Water Puppy" water transfer pump will work.
--Geoff
'82 RTS CA |
DMDave
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 12, 2005 - 3:48 pm: | |
Geoff is right about the Jabsco but put a inline strainer or filter on it. If you can get the overflow to just flow like cory suggested it would be simpler. Jabsco makes all kind of pumps check your boating supply bilge water pump would be good. |
FAST FRED
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 12, 2005 - 3:59 pm: | |
There is quite enough garbage in all grey water that a filter would quickly plug.
IF you need to transfer grey or black the macerator style is the only way to do it with any reliability.
Try to avoid the RV junk , or at least get a 120V unit and GRAVITY feed it at all times!
FAST FRED |