tthrower
Raleigh NC
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Joined: 08/10/2007
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I'm going to install a "360 Cyclone" roof vent for my black water tank. Any ideas how I can tell which vent is black vs. gray? I know I'm setting myself up for some clever answers here. 
Thanks!
Terry Thrower
Raleigh, N.C.
terry@terrythrower.com
2007 Damon Tuscany 4074
C7 Cat
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Polishnurse
Schodack, NY
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Joined: 03/13/2007
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Remove the cover (cap on the vent pipe) and put your ear to it, have someone flush the toilet, you should hear the water flowing pretty good. Bill
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dzeemon
Richmond, Va, USA
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Joined: 12/22/2004
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See which one smells like the blue stuff(if you use it).
Danny & Stacey
Jake & Carla (kids)
Jack (cat)
Sweetroll (dog)
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wa8yxm
Wherever I happen to park
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Joined: 07/04/2006
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Good method.. There are a few others. You can also run water down the pipe while someone watches the clear elbow after you dump and says "Yup, it flowing"
Better yet.. Do 'em both
Nothin adds excitment like something that is none of your business
John is Near Kenwood TS-2000 housed in a 2005 Damon Intruder 377
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SCVJeff
Santa Clarita, CA.
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Joined: 07/28/2006
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Well heres one:
Only the nose knows... 
Jeff - WA6EQU
'06 Itasca Meridian 34H, CAT C7/350
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FUN BOX
Camarillo, California
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I'll guess - The stinky one? 
2003 Monaco Knight 38 1/2' Triple Slide - Cummins 8.3 / Allison 6spd LIC= FUN BOX
2001 Lexus RX300 on a Master Tow dolly LIC= CHKYDEE
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Fulltimers
Anywhere, USA
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Don’t be fooled though. Sometimes Grey water can smell worse than Black.
Fulltimers
Fulltimers Weblog
2003 Rexhall Aerbus 3550BSL
W-22 Workhorse
2001 Saturn SC2 (Mr. Toad
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Surfingfool
California
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I guess the nose test is better then the nut on a string taste test! ;P
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99damon
Colorado
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Joined: 09/20/2007
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Agree with Fulltimer. Put one on both stacks. I have only one roof-top vent that Y's into both black and gray tanks, and the reason I installed a 360 siphon was to reduce gray tank burps. Food particles in warm water turn into smelly brew in a matter of hours.
Another tip learned here on the forum -- if your vertical vent pipe has an air gap around it where it emerges from the roof, think about taking a rubber gasket or similar, cut a hole in it to fit over the pipe, then caulk it around the pipe and the edge of the gasket. This prevents gases from being pulled back into the coach from the top of the pipe. (It also rain-proofs the breach in the event your vent cap is ever damaged.)
I did both (seal the roof breach, install a 360 siphon) and I think I'm finally tank-burp free.
Wayne
Fulltimers
1999 Damon Intruder 341
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