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Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: richard5933 on October 19, 2017, 07:34:13 AM
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Our new 4108 has an electrically operated pneumatic dump valve setup. Works from a switch next to the driver.
Outlet is a cast iron fitting. There is a hose with a screw on matching fitting, but I can't see this being easy to use or all that desirable.
Any one have thoughts on converting this over to something more modern? Looks like the cast iron is only 2".(https://uploads.tapatalk-cdn.com/20171019/b474c0944a261fda028cbfc4dad8b8ec.jpg)(https://uploads.tapatalk-cdn.com/20171019/2fb6d6631431d103561c080218148c7a.jpg)(https://uploads.tapatalk-cdn.com/20171019/d6fe0e6b2842b7114f8b083d93fffa7f.jpg)
1974 GMC P8M4108A-125 (Current bus)
1964 GM PD4106-2412 (totalled Sept 2017)
Located in beautiful Wisconsin
KD9GRB
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Simply cut off the pipe after the valve and use an ABS 2"-3" with hose clamp and rubber hose to use a standard RV type hose. Then just add another switch to the compartment right there. With the tank being plastic, you could change out the whole setup
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I don't know anything about it, but it looks so "agricultural engineering" complex that I can't help but love looking at the photos!
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Back in that era most dump stations like at F/J had a open grate dump I miss those, you drove over the grate and flipped the switch no hoses to contend with, lol those days are gone thanks to people making a mess and leaving it
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Still have one at Lake Powell at the Shell station car/bus wash. They have a lot of tour busses.
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Still have one at Lake Powell at the Shell station car/bus wash. They have a lot of tour busses.
To far for me to drive Ed to dump but those nice aren't they
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Still have one at Lake Powell at the Shell station car/bus wash. They have a lot of tour busses.
I understand there are a couple in Chicago over the river, too. ::)
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What? them grates are everywhere, every street has them, hardest part is getting lined up over one to keep the toilet paper from hanging up in the grate. :'(
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My MC-8 was converted by executive coach in 74 it also had a Dave Matthews valve on the curb side in addition to the standard dump on the street side.
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I like the brass valve setup. If it works, I would just figure out a way to put a standard valve and hookup after it and use it for holding back the blackwater, (the water with the chunks in it 8)). That way when you're parked for a while you can leave the grey valve open and just dump your blackwater every few days and not risk building a pyramid of doom in the tank.
Will
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I like the brass valve setup. If it works, I would just figure out a way to put a standard valve and hookup after it and use it for holding back the blackwater, (the water with the chunks in it 8)). That way when you're parked for a while you can leave the grey valve open and just dump your blackwater every few days and not risk building a pyramid of doom in the tank.
Will
That's my plan... I just need to figure out how to add a modern connection to the cast iron. Not much room underneath, and I'm afraid of doing anything that lowers it more.
No gray tank on the bus. Just fresh and black. Both probably 100 gallons or more. With the smaller outlet on the black tank, being combined is probably a good thing. Otherwise, it wouldn't have enough liquid to push everything through to opening.
Is there a 'standard' method of connecting a modern sewer hose fitting to the cast iron?
1974 GMC P8M4108A-125 (Current bus)
1964 GM PD4106-2412 (totalled Sept 2017)
Located in beautiful Wisconsin
KD9GRB
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I would look for a pvc thread to socket weld adapter. Screw it on to the pipe & glue a piece of pvc pipe in to it & then glue on the hose adapter.
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i'm not sure i'd sacrifice that much ground clearance for a poop pipe. ???
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What about replacing the cast iron nipple sticking out the bottom with something like this? I can then install the appropriate coupler to the hose to make it flow.
Richard
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I would cut it off and use a Fernco coupling and go to the standard RV setup simple and easy
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http://www.adventurerv.net/waste-valve-wmetal-handles-p-9594.html (http://www.adventurerv.net/waste-valve-wmetal-handles-p-9594.html)
Or look for something like -- Valterra T1029-2 RV Sewer Waste Valve Termination Adapter 3" Bayonet x 3" Hub
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Is that an aluminum tank?
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because you have only 1 waste tank you could use a laundry pump 2 " in and 2 " out and pump it any were to the dump tank
I use this setup and I can drain my black tank 58 gal. and grey tank 125 gal very fast and up hill if needed . I use a fire hose style hose that rolls up when finished . my toilet is a head hunter that blasts water right in the toilet drain pipe so there is no large stuff going into the tank
(http://i1280.photobucket.com/albums/a484/crane66/oct%20%2012%202017%20011_zps0s5f3kv6.jpg) (http://s1280.photobucket.com/user/crane66/media/oct%20%2012%202017%20011_zps0s5f3kv6.jpg.html)
(http://i1280.photobucket.com/albums/a484/crane66/oct%20%2012%202017%20013_zpsfuactdzh.jpg) (http://s1280.photobucket.com/user/crane66/media/oct%20%2012%202017%20013_zpsfuactdzh.jpg.html)
looks like I need another place to resize my pictures then this crap from photobullcrapbucket
and if need be I can remove the system and use the old 3 "slinky if I really really have to
dave
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because you have only 1 waste tank you could use a laundry pump 2 " in and 2 " out and pump it any were to the dump tank
dave
pump make and model. source ?
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Is that an aluminum tank?
No. It's an early version of a polypropylene tank. Matching set - fresh and black are same size. Seem to be in good condition so I'm inclined to leave them alone for now.
I did find an adapter at a local RV store today. It goes from 3" pvc to a standard bayonet mount. Now I've just got to find a reduction bushing to glue into it to reduce the opening to the 2" MPT that's one the cast iron. Let's hope this works.
Richard
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pump is like this but mine has a 2 " in and 2 " out outlet
http://www.homedepot.com/p/AquaPro-1-3-HP-Utility-Sink-Pump-55011-7/206852252 (http://www.homedepot.com/p/AquaPro-1-3-HP-Utility-Sink-Pump-55011-7/206852252)
works great
sorry about the pictures and photo crap
dave
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I picked up a glue-on bayonet fitting today. It's designed to go on 3" pipe. Also bought a reducing bushing and some appropriated sized PVC fittings, all in the hopes of replacing the downward-facing 2" cast iron nipple with the PVC & bayonet fitting. If all goes well, then it shouldn't hang down any lower than current setup. It seems that since I'm using PVC/ABS for the bottom portion, worst case scenario it becomes the weak link and snaps off if it hits something. It seems better to have the break below the floor in the plastic pieces rather than the cast iron parts above. The actual dump valve is so far inboard that I'm not worried about it.
I'll post photos once it's together.
Richard
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pump is like this but mine has a 2 " in and 2 " out outlet
http://www.homedepot.com/p/AquaPro-1-3-HP-Utility-Sink-Pump-55011-7/206852252 (http://www.homedepot.com/p/AquaPro-1-3-HP-Utility-Sink-Pump-55011-7/206852252)
works great
sorry about the pictures and photo crap
dave
Thank-you, all i could find for laundry pumps were submersibles :)
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There were several posts a couple years ago about using a garbage disposal connected to a garden hose to empty holding tank. Was reported to work quite well and disposals just happen to have 3 inch inlets which easily facilitates connection to dump valve with short hose and adapter. I saw that one of the RV supply companies make something similar at much higher price point.
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Was easier than I thought (https://uploads.tapatalk-cdn.com/20171021/f5756588afcdda3e99f23c6033552cd1.jpg)
Richard
1974 GMC P8M4108A-125 (Current bus)
1964 GM PD4106-2412 (totalled Sept 2017)
Located in beautiful Wisconsin
KD9GRB
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Was easier than I thought
You are 'The MAN!'
Great solution!
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Another interesting thing I noticed...
The electrically operated pneumatic dump valve works amazingly well. Also had better than expected flow from just a 2" pipe. There was about 6 inches of blue water in the black tank (looks like someone really overdid the chemicals and tried to 'clean' the tank) and it flowed out before we knew it. I'm hoping that if we keep enough liquid in the tank the solids should flow out pretty well. In case they don't, I'm replacing the clean-out plug in the "T" fitting (see photo in earlier post) with an adapter & backflow preventer so that I can hook up a garden hose to flush out the dump valve and cast pipe without having to open anything up.
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Richard -
As you said, not as difficult as you thought it would be.
You might want to consider substituting one of these for that orange connection to the coach adapter:
https://www.amazon.com/Valterra-T1026-1-45%C2%B0-Clearview-Adapter/dp/B000NCS7GE (https://www.amazon.com/Valterra-T1026-1-45%C2%B0-Clearview-Adapter/dp/B000NCS7GE)
I've found it works much better to slide my "slunky" under to get a nice smooth flow to the dump receptacle:
https://www.amazon.com/Level-Trek-LT80070-Sewer-Hose-Support/dp/B008OJ5H9I/ref=sr_1_5?s=automotive&ie=UTF8&qid=1508652109&sr=1-5&keywords=rv+sewer+hose+support (https://www.amazon.com/Level-Trek-LT80070-Sewer-Hose-Support/dp/B008OJ5H9I/ref=sr_1_5?s=automotive&ie=UTF8&qid=1508652109&sr=1-5&keywords=rv+sewer+hose+support)
Then one of these at the end of the hose into the receptacle:
https://www.amazon.com/Camco-39736-RhinoFLEX-Bayonet-Fitting/dp/B01N5H2FCE/ref=sr_1_1?s=automotive&ie=UTF8&qid=1508652410&sr=1-1&keywords=camco+clear+sewer+elbow (https://www.amazon.com/Camco-39736-RhinoFLEX-Bayonet-Fitting/dp/B01N5H2FCE/ref=sr_1_1?s=automotive&ie=UTF8&qid=1508652410&sr=1-1&keywords=camco+clear+sewer+elbow)
FWIW & HTH. . .
;)
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RJ - I had thought about that but hadn't had a chance to look on Amazon yet. It would certainly make a straighter run for the hose. I've already got the 90-deg bend on the far end. Thanks for the link.
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I don't know how far that sticks down below body, but it looks like an accident waiting to happen some day. Like going over humped road or railroad tracks or going in or out of uneven ground at a rally. Other than that, good work around. I prefer drain outlet at bottom inside of compartment with a horizontal outlet.
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He may have trouble with his setup dumping at some of the RV parks,I prefer mine horizontal in the bay also but it is my preference because I have had to many valves and fitting knock off over the years
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Holding the grey and black waters in the tanks until they are full has worked well for me for years. Even when at a full hookup site, I don't dump until the tanks are full. So when I do let it go, there is a strong flow that comes out fast and furious and cleans things out good.
JC
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I don't know how far that sticks down below body, but it looks like an accident waiting to happen some day. Like going over humped road or railroad tracks or going in or out of uneven ground at a rally. Other than that, good work around. I prefer drain outlet at bottom inside of compartment with a horizontal outlet.
That was one of my main concerns, and the reason I tried to keep things to the same drop as the original.
However, the whole works are installed into the T fitting by screwing in from the bottom. I tightened it pretty good, but only by hand - it's not too difficult to remove it again. Right now I'm leaning towards removing it before we hit the road to avoid any unplanned interactions with stationary objects.
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A tall tank dumps better than a shallow one. Looks like you have a tall tank, a 2" drain hose would be easier to handle - maybe why they did it that way . . .
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try this again ( google photo not photo bucket )
https://lh3.googleusercontent.com/U5a4OBp6TXwUtBThnoQX9cEylNfunDgPxrcx2_657y7rRB4yAT8EQilavG938VsHDBmw8Dr_7rXk9oAh9izinA-I8X3jG_bVvpMp01z4b0YoYvYlg-mEA6huSIFadWDhiKerGnRvGxEmpafqxiMeZOL4rLB_Y95oVWSAmBw2p5uz5jNYXHainLJEw5YidUdv_wd2X06xzPWk359iQIjtBAOsAjxutlKm6-WrQuamk78xGJ-ZQ7vGMInw8XEcOxDSsU2ItgGodD2r8NRv9unXy63IOoDQrr4Cnvh3-d3OkkGVUIcGruXFgf0hTwM7Vt4ZdMWTwUEOsOIRW1fUQ9So7QVMwiFqTrsGjf2xm0zZ0JUkxj9p8U3EeJbWct80M9vLFdwD76TZBS1gCtW3WhoZch-CO9NUwB-nrqW2ocsuUIamvuqrYH08XKDKcH4-redfvvIaSaXHzd1hrReflBRcqSPR6LXt0a0jCgimMCODwhsHuakbf563Y9B1USJPQV-PiWv8xNYHdGaHrD8yYmKjB4oYn9h2ogvOMstmj91CSSV5v-IjgqNOI1SgBAB-AnD2ywxWuAx7rHdmrU9BdYtnVgx-n-0LK7QQANNAlMu_Lqs12j8jt5zL6qs1VpbkZCJ7TQazDUzpAbNJiWjKIJd8FHG65M44I13ZNNQ=w577-h769-no
works fast and easy
dave
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It works as a link, and crazy amount of address. Im not familar with google photo or picassa whatever. But the option, i think they call it embedding is what your after. Possibly found in their support
Good luck
Floyd
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Just hook up a garen hose and it will push it up hill 120 ft or down hill 150 feet, Done Masadisposerator. ;D
Dave5Cs
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Yep, that's the one I was talking about. Slick setup.
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Sledhead,
Use this to shorten those google photos links:
https://ctrlq.org/google/photos
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The nice thing with my is I have a Stainless steel one now and it is 4 years old and still going strong, You don't have impellers to replace like a Maserator either. Dino-mo Dave saw mine in action at Burdett park at the Evansville Rally. It also doesn't matter which side it is on or how far up to 150 ft. It will reach it. And flushing is easy , I have a 3 inch fitting in top of tank to spray into with hose and clean it out.
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I have bought 2 of the FloJet pumps in the carrying case don't waste your 200 bucks on those, the brush holders are plastic and they melt then FloJet will not sell the brush holders only a complete little motor for 160 bucks.LOL the cord and push button do make a nice remote starter switch from the FloJet though
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Sledhead,
Use this to shorten those google photos links:
https://ctrlq.org/google/photos
why not just highlight your url and the click on the photo icon in the menu bar above the emoticons....it posts the picture and not the url...
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Lots of talk about moving $#!% uphill. So far, as a noobie RVer, I've not come across this situation. How many situations where you can not dump downhill? How can such dump stations exist? LOL
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test
https://photos.app.goo.gl/TKBRvtnOjFsecWdD3
sorry
back to regular scheduled post
dave
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Pumping tank contents is most often not an issue at a commercial campground. It comes into play at home or the home of a friend you are visiting. The access to sewer may be uphill or a long ways away. My previous house I used a Sewer Solution to pump about 25 feet over to a sewer clean out in the yard.
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We were in a friends driveway and his sewer clean out was on the other side of the house in the back yard. It was up hill and 132 feet away from the bus. It did it with no problems through a 5/8 inch garden hose we had on board. :o
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when I dump at home I go up hill and 50 ' to the clean out and at the cottage in florida I pump it 100 ' to the clean out
1 1/2 " fire hose style , very fast
at a camping dump I have a 1 1/2 " pool hose that's 25 ' long
dave
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ONe thing nice about the powered units is being able to use a smaller diameter hose. The bit slinky is a bit of an annoyance and one smaller and can be flattened would be much nicer for storing. Hard to imagine a 100' slinky in the bay