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3" rotating fitting for my black water line? [message #252491]

Wed, 18 June 2014 12:50

Lightfoot

Messages: 22
Registered: October 2013
Location: Southeast USA

Karma: 0

Junior Member

Hi y'all,

I have looked at several of these coaches that have a two-90 degree elbow fitting combo with a rotating joint between the elbows. This allows the sewage line to be lowered when dumping. Is this something that was standard on certain models? Where can I find a fitting like this? The EZE KLEEN is close, but I want to glue these fittings permanently inline and the EZE KLEEN system attaches with a bayonet end. Any advice or product that will work to give me fall on the drain line. I am redoing a 73 model here. With new GMC-1 style tank.

Thanks

Chris

Chris Lightfoot Working with a '73 palm beach. Mary Esther FL

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Re: 3" rotating fitting for my black water line? [message #252493 is a reply to message #252491]

Wed, 18 June 2014 13:00

glenn2726

Messages: 234
Registered: June 2014
Location: Topeka, Kansas

Karma: 2

Senior Member

Hi Chris, I haven't gotten that far on my coach (74 GMC) yet but would entertain ideas on a better configuration and not having to go under the coach to attach the drain hose...I think I have seen the system you are referring to on a fifth wheel trailer. It rotated out from storage against the trailer left side for dumping. It had accordian type fittings. Should be available at RV Parts stores or maybe ebay.I think it needs to be stored so that it wouldn't drag the ground on these GMCs so don't know the feasability. I thought the original connection on ours slid out of the sewer pipe to connect the extra hose to? Haven't looked at mine as yet, except to note there is no cap on it. The T handle is hidden behind drivers side rear wheel also. What have others done?

Glenn W Topeka, KS 1974 GMC 26 ft. Color:Camel Interior:Canyon Land Side Bath, Rear Sitting Area

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Re: 3" rotating fitting for my black water line? [message #252495 is a reply to message #252491]

Wed, 18 June 2014 13:12

Galen

Messages: 146
Registered: November 2011
Location: New Virginia, IA

Karma: 0

Senior Member

This what you are talking about Chris?

http://www.gmcmhphotos.com/photos/member-galleries/p43577-waste-outlet.html

It was on my 78 Palm Beach when I got it, along with the drop tray to the left in the photo to hold the extension of stinky slinky if a longer hose was needed. Scroll through the next couple pictures for other views.

I ended up installing the macerator in one of those photos. This stuff all came with the coach, and the PO had a coupling on the macerator to hook to the three inch hose. I permanently installed it on a Y coming out of the coach - the macerator on one side, and a standard dump valve on the other. If I have to dump gravity flow, I could, but I use the macerator instead. It took both of these pipe tray things off.

Mine was connected with a couple hose clamps and rubber sleeve.

Galen

Galen Briggs New Virginia, Iowa 1978 Palm Beach

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Re: 3" rotating fitting for my black water line? [message #252511 is a reply to message #252491]

Wed, 18 June 2014 14:12

Lightfoot

Messages: 22
Registered: October 2013
Location: Southeast USA

Karma: 0

Junior Member

Galen

It is similar. Several of these coaches have two abs elbows together, nicely installed (I think from the factory).
I will figure out how to post pics tonight. I have pics of 4 coaches that have the exact same system.

Chris Lightfoot Working with a '73 palm beach. Mary Esther FL

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Re: 3" rotating fitting for my black water line? [message #252550 is a reply to message #252491]

Wed, 18 June 2014 16:54

Galen

Messages: 146
Registered: November 2011
Location: New Virginia, IA

Karma: 0

Senior Member

2 90 degree elbows....oops missed that part... I'll look forward to seeing the pictures.

Galen Briggs New Virginia, Iowa 1978 Palm Beach

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Re: 3" rotating fitting for my black water line? [message #252553 is a reply to message #252491]

Wed, 18 June 2014 17:03

Matt Colie

Messages: 8547
Registered: March 2007
Location: S.E. Michigan

Karma: 7

Senior Member

Lightfoot wrote on Wed, 18 June 2014 13:50

Hi y'all,

I have looked at several of these coaches that have a two-90 degree elbow fitting combo with a rotating joint between the elbows. This allows the sewage line to be lowered when dumping. Is this something that was standard on certain models? Where can I find a fitting like this? The EZE KLEEN is close, but I want to glue these fittings permanently inline and the EZE KLEEN system attaches with a bayonet end. Any advice or product that will work to give me fall on the drain line. I am redoing a 73 model here. With new GMC-1 style tank.

Thanks

Chris

Chris,

I believe that the swivel was standard on most GMC models. I have never seen it anywhere else. It is a threaded section with an O-ring.
Stay tuned, there have been many effective modifications to the dump system.

Matt

Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit

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Re: 3" rotating fitting for my black water line? [message #252556 is a reply to message #252553]

Wed, 18 June 2014 17:16

Carl S.

Messages: 4186
Registered: January 2009
Location: Tucson, AZ.

Karma: 13

Senior Member

I think what you're looking to do is create what plumbers call a swing joint. It would consist of two threaded 90s with a close nipple in between. I don't think they are usually meant to actually "swing" but to provide some flexibility to the pipe joint. Maybe you could accomplish the same thing by using thread sealer (pipe dope) and leaving the connections just loose enough that you can move the pipe up and down.

Disclaimer: I'm NOT a plumber. Rolling Eyes

Carl Stouffer '75 ex Palm Beach Tucson, AZ. Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member

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Re: [GMCnet] 3" rotating fitting for my black water line? [message #252614 is a reply to message #252556]

Thu, 19 June 2014 08:06

USAussie

Messages: 15912
Registered: July 2007
Location: Sydney, Australia

Karma: 6

Senior Member

G'day,

Avion used a Valterra T1035-1 as found on page 13 of the document below.

http://valterra.com/downloads/download-info/rv-aftermarket-catalog/

Regards,
Rob M.
The Pedantic Mechanic
USAussie - Downunder
USA '75 Avion - Double Trouble TZE365V100426
AUS '75 Avion - The Blue Streak TZE365V100428

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426

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Re: [GMCnet] 3" rotating fitting for my black water line? [message #252652 is a reply to message #252614]

Thu, 19 June 2014 16:11

hal kading

Messages: 642
Registered: February 2004
Location: Las Cruces NM

Karma: 4

Senior Member

Put in a macerator and you will smile every time you dump. It's the only way to go!

Hal Kading 78 Buskirk Las Cruces NM

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