| Author |
Message |
John G Root Jr (Johnroot) (66.82.9.12)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, May 22, 2003 - 9:10 am: | |
Hi everyone,
My project is zipping along and I'm now hooking up the systems, cabinets are almost done.
I found a water pump that claims it needs no accumulator tank. Works along the lines of the diodes Gary Sadler talked about. It is called RV Aquajet "ES" series. Before I spend $150 for it does anyone have any good or bad experiences with it? Also, I rediscovered phreds poop sheets which are full of valuable experience about all kinds of RV issues and stuff, very worthwhile. That's where I found the pump referenced. www.phrannie.org
Best of luck to everyone working on their bus!
John G Root Jr
4106-1638 |
Chris (157.130.118.2)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, May 22, 2003 - 10:37 am: | |
Great Site- Thanks for sharing it! |
Geoff (Geoff) (66.238.121.0)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, May 22, 2003 - 12:16 pm: | |
I have the Aquajet RV Series, which is the "big brother" to the ES Series (and it's only $9 more). It works very well, and I don't have an accumulator tank with it.
--Geoff
'82 RTS CA |
Gary Stadler (Boogiethecat) (68.7.217.217)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, May 22, 2003 - 3:31 pm: | |
For my main system, I added a (5 gallon size) accumulator tank from Home Depot that is usually used in RO drinking systems (I use the diode thing for my drinking water which is a totally separate system). Both the wife and I are happy with the accumulator for many reasons..
(1) it keeps the pump operation to "once in a while" instead of "every time", and since our pump is located in the bedroom area (our storage tanks are under the bed) it's a lot nicer to not have every one of your water usages be loudly "announced" by the pump to your sleeping spouse. (It's also kind of a fun game when you do make it finally go... ie "haha honey, YOU did it this time!!")
A second big plus is this:
I stuck a bypass valve in the bathroom that lets hot water run back into the supply tank system, so when we want hot water we don't waste it while the pipes heat up by running it down the drain. When a stranger wants a shower, I turn that valve on and let it go until the accumulator runs out, then I shut it. The pump then turns on and fills the accumulator. Then when it's full I turn the pump off, and say 'shower time"... the guest automatically gets only 2-3 gallons max (only what the accumulator will supply), and if he or she doesn't "get it" and tries to take a long hard shower, the water runs out on them before they waste all my water!! I even use it for myself to meter my usage sometimes when I want a really hot long one but know I shouldn't. Its a neat way of measuring.
I got on to this idea by watching a friend who rented an RV with another couple at a gathering last year... the wife of the other couple cooked bacon for breakfast on the first day of a week long event in the desert... then she became absolutely intent on cleaning the frypan... in fifteen minutes of scrubbing with the faucet on, she did in the RV's entire 40 gallon water storage, and filled the waste tanks...and the four of them had to go without any water, showers or pottie for a week!! Fortunately I had enough spare to supply them with basic needs, but that's a good example of how the clueless can mess you up if you have no control over your water!
Cheers
Gary |
Jim Ashworth (Jimnh) (172.139.29.119)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, May 22, 2003 - 6:12 pm: | |
I have the Aquajet pump and love it. I have a 3 gallon accumulator tank but that was there before the pump went in. I can run a garden hose off the bus with the nozzle on the pressure squirt setting and the pump will keep up no problem. I would buy another in a minute even for retail. I bought mine at the Brunswick ME FMCA show for $95.
Jim |
John G Root Jr (Johnroot) (66.82.9.12)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, May 22, 2003 - 10:49 pm: | |
Thanks guys, I like Gary's idea about turning off the pump so you only get what's in the accumulator tank. So I guess I'll have both a pump that doesn't need an accumulator and an accumulator for measured showers! And the pump switch not in the shower, somewhere not obvious so I can control its use.
john g root jr
4106-1638 |
Scott Whitney (66.82.168.1)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, May 22, 2003 - 11:03 pm: | |
It seems to me to me that a variable speed pump is sort of a wasted feature if one uses an accumulator tank. I installed one of these pumps the other day (not on my bus) and it was sort of neat to hear it ramp up pump speed as required. But if you already have a decent size accumulator tank, I think a variable speed pump is like belt & suspenders - unless you just want the high volume feature for those times when two or three taps may be running at once.
Scott |
FAST FRED (67.75.96.102)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, May 23, 2003 - 4:50 am: | |
Not having an acumulator tank would save space AND the posibility of freezing it if not drained to winterize.
(Dont ask!)
FAST FRED |
Gary Stadler (Boogiethecat) (68.7.217.217)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, May 23, 2003 - 11:02 am: | |
Hey Fred, that's kind of a reversal, isnt it? It was your comment about 6 months ago- that an accumulator was a good idea because it would keep water expanding in the hot water heater as it heats up from blowing up your plumbing lines, ...that comment set me to the idea of putting my accumulator on the system in the first place!! Well, I guess we can all change our minds!!
Actually the very nature of the accumulator should be completley compatible with freezing... if there's a rubber bladder inside with air above it, there oughta be plenty of space for the ice to expand with no effect during a freeze....
Hee hee
Gary |
Gary Carter (67.0.81.188)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, May 23, 2003 - 1:09 pm: | |
On out bus I bought a flow jet from JC Whitney ($60) that required no accumulater. Worked great for many years. Also your water heater should have an airpocket in the top for water expansion so it does act like an small accumulator.
Recently I added an RO drinking water system and needed a small accumulator. Unable to find one I made one to fit out of 4" PVC. Put a tire valve in the top to add air as it gets desolved by the water. The waster water from the membrain is put back in the fresh water tank. |
FAST FRED (67.75.113.90)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, May 23, 2003 - 2:17 pm: | |
GARY ,,You bet , I have a system with the accumulator as I have seen too often what happens when cool water is heated with a marine style heat exchanger to about 180F , it generates great pressure & will blow hoses that are doubble clamped off their fittings.
I was hopeing that since this is a generations old problem the new big bucks "smart" water pump would be designed to let the water relieve at something over 60psi.
The guys with the big buck water pumps and BIG HW tanks will be the test pilots.
Big HW tanks generate even more pressure than my puny 6 or 10 gal units.
FAST FRED |
Jerry (152.163.252.163)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, May 25, 2003 - 11:54 am: | |
I used a Sears expansion tank for an accmilator system. several sizes, metal tank with rubber bladder. about $35 for a 2-3 gallon size |
Jack.In.KC (24.166.167.60)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, May 27, 2003 - 4:03 pm: | |
Water manifold park number: Does anyone know a manufacturer or park number for the hot & cold water manifolds used in many of the newer RV’s and Coaches. The ones that I have seen are about 18” tall and 4” wide. They have 8-10 red and blue knobs to turn off the water in case something leaks. Thanks. Jack |
Geoff (Geoff) (66.238.120.65)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, May 27, 2003 - 5:03 pm: | |
John-- the Aquajet is very quiet so you don't have to worry about using an accumulator for noise. |
Richard Jpnes (162.117.133.182)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, May 28, 2003 - 5:11 am: | |
I am looking for a hot water recirculing pump with a rating of around 1-3 GPM. The voltage could be either 24vdc or 120vac. Does anyone know of a source? Thanks in advance.
Richard Jones
'83 MCI-9
Castle Rock, Wa |
Gary Stadler (Boogiethecat) (68.7.217.217)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, May 28, 2003 - 12:44 pm: | |
Richard,
Consider FF's idea of simply putting a valve at the end of the hot water line that runs back to the water storage tank. When you need hot water, you simply open the valve until the line is hot, then close it and you're ready. It uses zero water because it dumps it back into the storage tank, and no energy is required to keep an unused hot water line hot all day...
Works really well for me.
Otherwise you can get a recirc pump from WW Grainger, it's called a hydronic circulator...
Cheers
Gary |
FAST FRED (67.75.106.89)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, May 28, 2003 - 4:00 pm: | |
Really Sexy in the cold weather to circ the HW back to the FW tank via a towel heater .
In any issiue of Fine Homebuilding for sources or solder up your own!
FAST FRED. |