Another toilet thread (1 Viewer)

May 20, 2015
361
319
Newbury
Funster No
36,484
MH
AS Kingham
Exp
Since 1970
This one relates to Thetford C220 cassettes. I have a spare cassette but the two vents pictured are different. The one on the right is from the existing cassette and I believe it’s for cassettes with an outside vent, which I don’t have. On the left is the equivalent on the spare cassette which is much wider and prevents the cassette from being inserted without considerable force and risk to wallet from impending damage.
So two questions.
1. Am I right in thinking that if I turn the vent to the empty circle marking then it should just pull out?
2. Any idea why Thetford would supply replacement cassettes with different fittings? I have checked the serial numbers which are identical.

Armed with the knowledge of this forum i can then ask Thetford the same questions

Thanks

D0DF570D-8FC6-489A-8D47-6F9E6C93DF39.jpeg B66AB853-37B2-4A8C-BEEE-E51D64DB8B3B.jpeg
 
Apr 3, 2018
3,762
10,478
Funster No
53,151
MH
PVC
Exp
1995-2004 & 2017》
Sorry can't help with why differant, but yes turn to the circle and will pull out.👍
 
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Nov 5, 2013
3,158
98,912
Shropshire
Funster No
28,900
MH
Carthago chic e-line
Exp
Since 2013
Apparently they started putting the new type vent on after 1993 so must be using up old stock,you could try contacting them but they'll probably tell you the serial number is for the cassette! So you can either keep changing them over (could get messy) or buy the right one. You should have an outside vent,it will just go straight down through the floor

 
Upvote 0
Jul 4, 2018
1,258
1,642
Bristol
Funster No
54,738
MH
Weinsberg
Exp
A few years.
You can buy either type of vent valve , no doubt Thetford will tell you current price mine was £14.99 2 years ago.
 
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OP
OP
solaris
May 20, 2015
361
319
Newbury
Funster No
36,484
MH
AS Kingham
Exp
Since 1970
Thanks for the advice. Cost is now £16/18 range. So not gone up too much. Another motorhome problem solved by chucking money at it.
 
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