Utilizing Black Tank for Gray Water Overage

Wrong Tom. Gray is smaller on 2551 & 2552.

And water seeks its own level so the tanks will be the same water height in any case.

Sorry my bad.  I was thinking about pumping from one tank to another using the Mercator pump thru the window. Some models the tanks are switched in size.

  Ron:  "There is a buffer of pipe between each tank valve.  If there was any backwash contamination, it would be trapped in the pipe between tank valves."

This has me baffled, are you saying there is actually a check valve between the two tanks? Ron with all your great connections at PC maybe you could get an actual diagram on the plumbing manifold to the tanks? Or maybe you could post a simple sketch?


fandj, thanks for that link. I have never been exposed to this product. The vids are worth watching. I'm not sure why hepvo is not standard equipment.

Doug

The hepvo does look cool but there is a disclaimer that it is for occasional use. That could be a cover your butt disclaimer or it's possible it wouldn't hold up to constant use. Something I would check before having installed. I'd rather have that on the kitchen sink but only if it lasted years with full time use.

First let me say I have no commercial interest in Hepvo but just a satisfied user.  I installed the Hepvo unit and used it on a Casita travel trailer for about 3 years prior to buying our Phoenix.  It was not used full time but was used on various trips up to 5 months duration.  I got the idea off the Casita forum.  Based on user comments I expect several hundred P traps were replaced with the Hepvo unit.  It worked so well that Casita started using it as standard equipment in 2015.  I cannot say there was never a problem only I never did see any reference to issues by Casita Forum posters.

I agree anyone considering the Hepvo unit should do their homework.  Access to the P trap is much more difficult than what I experienced with the Casita.  It was accessible from underneath the trailer whereas I would expect the shower pan would need to be removed to access the trap on the Phoenix.  During the initial build it probably would be simpler to install the Hepvo unit than the currently used P trap.

If I was ordering a new Phoenix today I would do a more in depth review as previously suggested of any reliability issues due to accessibility concerns but barring finding problems with the valve I would ask Phoenix to install the Hepvo unit on both sinks and the shower drain.