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Old 07-17-2013, 12:32 PM   #31
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Back flow preventers do work as you say as long as it doesn't stick "open" as the check valves commonly do on the fw inlet.
One time of that and you'll use a seperate hose. Imo
Ahh, I wasn't clear - I wholly suggest using separate hoses. One hose for my black tank flushes (either a the built-in tank flush or the product that was mentioned) and a SEPARATE set of hoses for my fresh water inlet.

However, I do hook up a wye to the hose outlet and hookup one side to my sewer hose and the other to my fresh water hose. Given the propensity for back-flow preventers to malfunction, I'm possibly cross-contaminating my fresh water hose anyway.

I'd guess the only way to properly protect against that is to disconnect my FW hose when I do my black tank flush and when I reconnect it - clean the spigot with bleach.

Given that I'm moving to quick hose disconnects. That might not be too bad to do.
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Old 07-17-2013, 01:05 PM   #32
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Ahh, I wasn't clear - I wholly suggest using separate hoses. One hose for my black tank flushes (either a the built-in tank flush or the product that was mentioned) and a SEPARATE set of hoses for my fresh water inlet.

However, I do hook up a wye to the hose outlet and hookup one side to my sewer hose and the other to my fresh water hose. Given the propensity for back-flow preventers to malfunction, I'm possibly cross-contaminating my fresh water hose anyway.

I'd guess the only way to properly protect against that is to disconnect my FW hose when I do my black tank flush and when I reconnect it - clean the spigot with bleach.

Given that I'm moving to quick hose disconnects. That might not be too bad to do.
I do the same, except I have a shut off at the trailer hose connection for the black tank flush. There is always water flowing into the black tank when I shut the water off at the trailer connection. That eliminates possible back flow if the backflow preventer fails.
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Old 07-17-2013, 01:07 PM   #33
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I do the same, except I have a shut off at the trailer hose connection for the black tank flush. There is always water flowing into the black tank when I shut the water off at the trailer connection. That eliminates possible back flow if the backflow preventer fails.
Interesting- I do it similarly. My shut off is at the wye itself at the campsite spigot. I always turn off the water there (while it's running as I rarely ever fully turn off the water).
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Old 07-17-2013, 01:08 PM   #34
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To the op.
Do you in fact know for sure that you even have a full hook up site to be worried about a sewer hose and tapered ramp?

Turbs
Tapered ramp? Do you mean donut? Have had to use them 3 or 4 times in campgrounds without threaded pipe and the regulations require "sealed" sewer connections. As ependydad stated, they are a pita to use.
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Old 07-17-2013, 01:14 PM   #35
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Interesting- I do it similarly. My shut off is at the wye itself at the campsite spigot. I always turn off the water there (while it's running as I rarely ever fully turn off the water).
Shut offs are available @ Lowes,HD
Shop Gilmour Brass 1-Way Restricted-Flow Water Shut-Off at Lowes.com
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Old 07-17-2013, 01:15 PM   #36
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Tapered ramp? Do you mean donut? Have had to use them 3 or 4 times in campgrounds without threaded pipe and the regulations require "sealed" sewer connections. As ependydad stated, they are a pita to use.
No the hose support.
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Old 07-17-2013, 01:44 PM   #37
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As ependydad stated, they are a pita to use.
I'm "glad" to hear that. I thought I was doing something wrong. I cursed that thing each and every time and never felt like I got a really good connection any of the times that I used it.
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Old 07-17-2013, 01:57 PM   #38
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For sites that the sewer outlet isn't threaded- this gives you an airtight seal between the elbow and the sewer connection.

Some campgrounds require them and just so happen to sell them in the store. :-)

I've used it 2 or 3 times and curse it every time!
Maybe I'm late to the party, but an "airtight seal ..." Are there air quality meters at each sewer connection now?

I can understand an effort to have a liquid
/ solid waste tight seal at the connection, but airtight is new to me. If an airtight seal at the sewer connection is now required, then the last time I was at one, it wasn't working.
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Old 07-17-2013, 02:06 PM   #39
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Maybe I'm late to the party, but an "airtight seal ..." Are there air quality meters at each sewer connection now?

I can understand an effort to have a liquid
/ solid waste tight seal at the connection, but airtight is new to me. If an airtight seal at the sewer connection is now required, then the last time I was at one, it wasn't working.
I've been in violation since '92 then.
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Old 07-17-2013, 02:12 PM   #40
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I've been in violation since '92 then.
I guess I need to fess up also - since last year for me
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