Trillium 4500 Drain Outlet Replacement Build - Fiberglass RV
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Old 10-22-2022, 09:41 AM   #1
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Name: Shangie
Trailer: Northwood Nash 22/1977 Trillium 4500
Washington
Posts: 151
Trillium 4500 Drain Outlet Replacement Build

New Drain Outlet: Hubs replaced the drain outlet to the exterior (Trillium 4500) because it was leaking. The one he built is heavier duty. We could of used a unit we found online except that the smaller size meant having to do a fiberglass repair on an unpainted trailer. He basically turned an inlet into an outlet.


He built the new one with parts obtained on Amazon.

He used the cap off a Valterra T-1020-1 Waste Valve Cap-3" with capped 3/4" GHT because it was less expensive than buying just the cap.

Then he purchased a Joywayus 1/2" NPT female 3/4" GHT Male Solid Brass Water tank connector threaded bulkhead fitting and a City Water Fill Inlet with Pressure Regulator from Shurflo #183-029-18.

He took the pressure reducing valve out of the Shurflo and drilled a hole to accommodate the Joywayus brass fitting in there with the two rubber gaskets supplied.

He then used a half inch hose barb to screw into the back and basically remade the original in a heavier duty unit. A bonus was the Shurflow unit covered all the holes from the original.

He did have to enlarge the hole from the original with a 3.5" hole saw using a predrilled board as a guide and using the drill in reverse for the entire cut which helped avoid major chipping of the fiberglass.

Then he screwed it onto the side with stainless washers, bolts and nylock nuts, using Butyl Tape. Hope that explanation helps anyone attempting to create a new outlet drain. Cost was around $75.00. Happy to answer any ?'s
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Old 10-26-2022, 09:59 AM   #2
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Trailer: 1981 Trillium 5500
Posts: 1,158
Pictures?
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Old 11-04-2022, 03:14 PM   #3
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Name: Shangie
Trailer: Northwood Nash 22/1977 Trillium 4500
Washington
Posts: 151
No Pictures.

We don't know how to get them onthis forum and even if we did, he doesn't have anyone there to take pictures while he does the work or to wipe his hands up every time he wants to use a camera, or to help him get the job done which he does while working more than full time. Perhaps we will have more time to tackle pictures when we are fully retired. In the meanwhile, if someone had questions they could PM with name and phone number and he would call them back.

I realize a picture is worth a thousand words but at this time words hopefully can either get the idea started or beg questions we are happy to try and answer.
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Old 11-13-2022, 02:35 PM   #4
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Name: Shangie
Trailer: Northwood Nash 22/1977 Trillium 4500
Washington
Posts: 151
Picture of Gray Water Tank Drain Trillium 4500

Wrote about that project under our user name. Don't know how to add a picture of the final product to that post since it doe snot show an edit feature so I added it here.
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