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Old 16-06-2014, 12:42   #16
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Re: Best Head Hose

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I supose not many RVs have water tight bulkheads.

Nor Joker valves or pumps for that matter, pure gravity system
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Old 16-06-2014, 14:04   #17
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Re: Best Head Hose

[QUOTE=thinwater;1565628]For rigid pipe guys: how do you get the joker valve out? With hose I can swing the flange to the side, but how do you manage this with pipe? No room for a union, and yeah, the angle is odd.

This is where a short length of hose glued into a PVC coupling works great.
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Old 16-06-2014, 14:38   #18
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Re: Best Head Hose

^^ But we're trying to get away from vinyl hose, since that is the first failure point.

I have no specific opinion re. hose/pipe. Just listening.
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Old 16-06-2014, 15:36   #19
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Re: Best Head Hose

Why do you say a bit of hose at the Joker Valve would be the first point of failure? Smell wise? 6" of good hose is not going to smell.
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Old 16-06-2014, 15:55   #20
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Re: Best Head Hose

[QUOTE=Guy;1565679]
Quote:
Originally Posted by thinwater View Post
For rigid pipe guys: how do you get the joker valve out? With hose I can swing the flange to the side, but how do you manage this with pipe? No room for a union, and yeah, the angle is odd.

This is where a short length of hose glued into a PVC coupling works great.
Nothing in my twenty year old ABS plumbing is glued. It is all clamped, even where the sort lengths of hose meet the ABS, All adapters are available at Home Depot.

I have never used PVC, I used ABS because that what is most commonly used in residential construction here is Ontario. Don't see why PVC wouldn't work either.
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Old 16-06-2014, 15:58   #21
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Re: Best Head Hose

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For rigid pipe guys: how do you get the joker valve out? In my case, for example, the hose goes straight back, through a bulkhead which it is caulked tight to (it is a flotaion bulkhead, so re-caulking the hose each time is silly). With hose I can swing the flange to the side, but how do you manage this with pipe? No room for a union, and yeah, the angle is odd.

I supose not many RVs have water tight bulkheads.
Simple...fagettabout the joker valve. Install a nylon ball valve/ anti stink valve. The normally off anti stink valve does the job. Joker valve is redundant! And no worries about PVC and anti freeze....just do it.
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Old 16-06-2014, 16:09   #22
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Re: Best Head Hose

ABS will work fine. I don't understand how your fittings and pipe are put together with clamps - ABS is rigid and usually glued.

One advantage with PVC is it is universally available everywhere if you need to repair/change it for any reason. I mean everywhere - grass huts in remote places have it for sale.

ABS may be easier to work with though. And this really is a do once and forget about it for many, many years type of job - either will be equal and better than hose.

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Old 16-06-2014, 16:21   #23
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Re: Best Head Hose

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Simple...fagettabout the joker valve. Install a nylon ball valve/ anti stink valve. The normally off anti stink valve does the job. Joker valve is redundant! And no worries about PVC and anti freeze....just do it.
What is an "anti-stink valve".
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Old 16-06-2014, 16:23   #24
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Re: Best Head Hose

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What is an "anti-stink valve".
that would be a sphincter
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Old 16-06-2014, 16:29   #25
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Re: Best Head Hose

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... And no worries about PVC and anti freeze....just do it.
Actually, there is no concern re. vinyl hose and neoprene joker valves (both are impacted) vs. antifreeze... unless you are still using propylene glycol (PG) in the head.

** ethylene glycol (EG), common in engine coolants, does NOT affect either vinyl or neoprene. Just one of many reasons it is preferred in cars.
** EG and PG are equal in bidegradability (the USEPA and European agencies have studied this in length in relation to aircraft de-icing--Google it).
** The are equal in marine toxicity (same studies and any MSDS). Anyone who says differently is either selling something or has not read the data.
** There is really no risk of mammal poisoning, because no one is drinking black water, and the system is even sealed during pump-out.
** No difference at wastewater treatment. I've designed the plants. Actually, PG is a little worse, partly because its BOD is higher, and partly because more is needed for the same FP.

So stop using the "pink stuff" in the head. It is for potable water systems only.
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Old 16-06-2014, 16:41   #26
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Re: Best Head Hose

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that would be a sphincter
So between your butt and and the holding tank you install a ball valve? I would rather have a Joker Valve.
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Old 16-06-2014, 16:45   #27
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Re: Best Head Hose

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So between your butt and and the holding tank you install a ball valve? I would rather have a Joker Valve.
maybe you should look it up
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Old 16-06-2014, 17:10   #28
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Re: Best Head Hose

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maybe you should look it up
OK thanks I did. Sorry, I will never ask another dumb question again.
How does it work?
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Old 16-06-2014, 17:42   #29
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Re: Best Head Hose

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that would be a sphincter

Smartest and fastest muscle in the body, can instantly determine matter state and react instantaneously
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Old 16-06-2014, 17:59   #30
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Re: Best Head Hose

Definitely avoid the white stuff if it is situated so a leak can sink the boat. It has a tendency to split readily even when fairly new.
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