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Old 08-06-2022, 09:04 AM   #1
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Pressure release valve 2012 allegro open rd

Does anyone know the size of the pressure release valve on a 2012 Tiffin Allegro Open rd. Itís an Atwood 6 gallon tank.
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Old 08-06-2022, 10:17 AM   #2
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Atwood ......used two different size T&P Relief Valves
1/2" NPT with 4" probe (91604)
3/4" NPT with 4" probe (90028)
*remove yours to verify which thread size was used

Most any hardware store should have a replacement vs ordering an Atwood
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Old 08-07-2022, 05:58 AM   #3
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Originally Posted by Old-Biscuit View Post
Atwood ......used two different size T&P Relief Valves
1/2" NPT with 4" probe (91604)
3/4" NPT with 4" probe (90028)
*remove yours to verify which thread size was used

Most any hardware store should have a replacement vs ordering an Atwood

Thank you. Looks like itís the 1/2Ē. Appreciate the help
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Old 08-08-2022, 03:26 AM   #4
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After the water cools take it out and take it with you to the store.
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