Posted: 19 August 2016 4:03 PM Subject: Thetford ....Old dog new trick.....
I must of emptied the cassette countless times over the last 25 years........but today I discovered a new trick whilst emptying ........
Usually when pouring the contents down the karzi at home, or here at the MIL's there is inevitably a bit of splash back, how ever careful I tried to be ...........
But today on a whim I flushed at the same time as I hit the button.......Low and behold no splash back ........and even the pong was reduced ........
I’m uncertain what you are doing now that avoids splashing (or were not doing before that provoked splashing).
I’ve always depressed the cassette’s vent-button just before tipping the cassette to empty the waste through the cassette’s emptying spout, and held the vent-button down until the cassette has fully emptied. Depressing the vent-button lets air into the cassette and allows the waste to drain out freely, minimising potential splashing - that’s the design purpose of the vent-button.
What have you done in the past when emptying the cassette? I find it hard to believe that for 25 years you’ve not been depressing the vent-button just prior to and during the emptying process.
Posted: 20 August 2016 8:28 AM Subject: RE: Thetford ....Old dog new trick.....
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Posts: 4881 Location: Suffolk, Hymer B674 2006
I enjoyed the second of Derek's links which contains an explanation of the chin rest - something I hadn't appreciated before. And I've been using Thetford toilets for many years getting that wrong.
Posted: 20 August 2016 9:06 AM Subject: RE: Thetford ....Old dog new trick.....
Derek Uzzell - 2016-08-20 7:41 AM
I’ve always depressed the cassette’s vent-button just before tipping the cassette to empty the waste through the cassette’s emptying spout, and held the vent-button down until the cassette has fully emptied. Depressing the vent-button lets air into the cassette and allows the waste to drain out freely, minimising potential splashing - that’s the design purpose of the vent-button.
What have you done in the past when emptying the cassette? I find it hard to believe that for 25 years you’ve not been depressing the vent-button just prior to and during the emptying process.
So have I........But as you say it minimises potential splash back........and in my experience there's always one lump or two in there, that are not prepared to go quietly ..........
I only pulled the chain as I hit the vent button on a whim, and I have to say I was surprised how even the rim above the bowl stayed clean, plus the pong was reduced .......
One other thing the MIL's karzi is outside, and has a proper flush, not one of these modern water reducing bogs so whether that'll make a difference is yet to be discovered in my..... odyssey for the perfect flush .....
Posted: 20 August 2016 10:55 AM Subject: RE: Thetford ....Old dog new trick.....
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I'm surprised to learn that some people take their cassettes indoors to empty them.
( Isn't there a risk that could lead to divorce ? )
I always dump mine ( when at home ) in a manhole out on the drive - which is followed up by a good hosing down inside and outside of the cassette ( and the drains ).
Posted: 20 August 2016 11:06 AM Subject: RE: Thetford ....Old dog new trick.....
malc d - 2016-08-20 10:55 AM
I'm surprised to learn that some people take their cassettes indoors to empty them.
( Isn't there a risk that could lead to divorce ? )
I always dump mine ( when at home ) in a manhole out on the drive - which is followed up by a good hosing down inside and outside of the cassette ( and the drains ).
At our last house we had a wet room...... so if disaster struck .........the cleaning up was easier .....
Here at the MIL's we use an outside toilet .......
But many campsite dump points are often just a standard toilet without a seat .........
Posted: 22 August 2016 6:55 AM Subject: RE: Thetford ....Old dog new trick.....
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pelmetman - 2016-08-20 9:06 AM
...I only pulled the chain as I hit the vent button on a whim, and I have to say I was surprised how even the rim above the bowl stayed clean, plus the pong was reduced .......
OK, I understand now what your hint involves.
It seems reasonable that, if a cassette is emptied into an ordinary siphonic domestic toilet bowl that is simultaneously being flushed that less splashing would result. And, if the flush-water leaving the toilet ‘round the bend’ causes a slight vacuum within the toilet bowl, that the smell might be reduced.
Seems like you’ve discovered the PSSE (Pelmetman **** Sucking Effect).
Posted: 22 August 2016 9:16 AM Subject: RE: Thetford ....Old dog new trick.....
Derek Uzzell - 2016-08-22 6:55 AM
pelmetman - 2016-08-20 9:06 AM
...I only pulled the chain as I hit the vent button on a whim, and I have to say I was surprised how even the rim above the bowl stayed clean, plus the pong was reduced .......
OK, I understand now what your hint involves.
It seems reasonable that, if a cassette is emptied into an ordinary siphonic domestic toilet bowl that is simultaneously being flushed that less splashing would result. And, if the flush-water leaving the toilet ‘round the bend’ causes a slight vacuum within the toilet bowl, that the smell might be reduced.
Seems like you’ve discovered the PSSE (Pelmetman **** Sucking Effect).
Or.....
PPVE........Pelmetmans Poo Vacuum Effect .....
PPRT........Pelmetmans Pong Reducing Theory....
PAST........Pelmetmans Anti Splash Thesis......
PRAT.......Pelmetmans Retired And Too..... much time on his hands.....
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........and even the pong was reduced 
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