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Old 05-14-2022, 12:01 PM   #1
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Royal Flush Neo Classic - Leaking Vented Loop

So we have identified a problem with the toilet in our "new to us" 2003 Monaco Windsor 40DST... luckily we have 1.5 bathrooms...so not stopping us from using our Coach... but... not optimal.

The Royal Flush NeoClassic toilet in the rear "head" leaks out of the top of the vented loop when the toilet is flushed.... it seems to be faulty obviously, but I cannot find anywhere on the internet what could be wrong or how to repair/replace the part.

Anyone here have had this problem and corrected? I don't want to replace the whole toilet, certainly there must be a replacement part/rebuild kit? I have contacted Headhunter Inc., but no response yet.

Thank you in advance,
Lance
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Old 05-14-2022, 01:08 PM   #2
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Welcome to iRV2

Sealand toilet parts list refers to the part as a " Vacuum breaker " have you been searching for it under that or a similar a similar name ?
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Old 05-14-2022, 02:32 PM   #3
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I had not as I saw on www.headhunterinc.com they referred to Vented Loop... I will check that out though!

My understanding was that a Vacuum Breaker was on the water supply side of the toilet and the Vented Loop is on the discharge side of the toilet...

Hoping someone has done this already and can give some tips... it looks like I'll have to remove the toilet to fix...
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Old 05-14-2022, 02:45 PM   #4
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Followed that lead and confirmed the Vacuum Breaker is on the water supply side..... my search continues!
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Old 05-14-2022, 08:51 PM   #5
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Please confirm your exact unit with model/series #. This model # manual mentions,
3. Anti-siphon valve/ "on the discharge loop, not water supply" see pic
4. vacuum breaker/ on water supply
http://www.southerncalmarine.com/pro...ions-manua.pdf
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Old 05-15-2022, 06:06 AM   #6
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Good point ..our unit is a Headhunter Inc. Royal Flush NeoClassic. It's the NCS-0.... I found the original manual...and I have a part number (VP-1780OEM).

Also the installation we have may e a bit off, so I am going to probably take this unit out and reinstall with proper spacing and swing check valve....

More to come, but here is the parts diagram I located.

Unfortunately I don't know how to rotate my images yet!
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