Anti-Syphopn or HepVO Trap?

Please indicate where in Part G, Part H or in manufacturer’s installation instructions it says you can discharge a bath/shower etc into the pumped (pressure) side of a macerator? Bath/showers/sinks are connected to the low pressure side of the macerator which then pumps all waste directly to the discharge soil stack; check valves should be fitted to low level sanitary appliances such as shower trays & possibly a bath to prevent back flow but this is not the same as siphoning. Good luck if you plan on fitting your bath/sink to the pumped side of the macerator, it could lead to a very interesting & colourfull new décor in your bathroom. :LOL: ;)

Opposingly - Please indicate where in Part G, Part H it says you cannot discharge a bath/shower etc into the pumped (pressure) side of a macerator?

There are things the BC will allow that would appear to be counterintuitive but are still permissable.

Yes - back flow is not the same a syphonage but the is always the chance of negative pressure being created in the bath branch of the outflow when the macerator is in operation thus creating syphonage - Hence the question.? Which has still not been answered.

An NRV will be fitted on the branch.

Refering to people as numptys or idiots does not do you any service. That is just childish name calling.

So you have been on this forum since 2005 - big deal is that a badge of honor, am I supposed to be impressed? So act in a mature way.
 
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Yes - back flow is not the same a syphonage but the is always the chance of negative pressure being created in the bath branch of the outflow when the macerator is in operation thus creating syphonage - Hence the question.? Which has still not been answered.

I'm pretty sure I covered that one. The reason I (and perhaps others) haven't provided a black-and-white answer is because, as I keep saying, you need to refer to the manufacturer's instructions. I expect you will find all the answers you need within them, although they probably won't be to your liking. I find it highly unlikely they will suggest connecting appliances to the discharge of the macerator, self-sealing trap or otherwise.
 
Opposingly - Please indicate where in Part G, Part H it says you cannot discharge a bath/shower etc into the pumped (pressure) side of a macerator?
If you read the BS EN documents mentioned within Approved Document G it specifically states "No other connections shall be made to the discharge pipework"

It is pretty clear.
 
Opposingly - Please indicate where in Part G, Part H it says you cannot discharge a bath/shower etc into the pumped (pressure) side of a macerator?
That’s one way of looking at it I suppose.

There are things the BC will allow that would appear to be counterintuitive but are still permissable.
Only if you’ve got a numpty BI; they do exist & I suppose that will make a “matching pair” & work in your favour; but are you sure you didn’t speak to the cleaner!
Yes - back flow is not the same a syphonage but the is always the chance of negative pressure being created in the bath branch of the outflow when the macerator is in operation thus creating syphonage - Hence the question.? Which has still not been answered.
It has been answered, it’s just the answers your getting don’t seem to fit with your thinking or suit your needs. You’re doing notifyable work in any case so I assume you will be submitting a Building Notice? It will be interesting to hear what the BI says when he sees it, please post when you know.

Refering to people as numptys or idiots does not do you any service. That is just childish name calling.
So lets see now; I was sarcastic because I posted you a link on permissible notching/drilling joists; my only skill is to post website links; I’m accused of posting the wrong link which it wasn’t, just not the one you had been looking at – or maybe been advised to look at (but I did learn something there); your misinterpreting BR’s; don’t seem to have a sense of humour about the “chemical loo” jibe but perhaps if I’d stuck a smiley on the end it would have helped. ;)

My “magic wand” comment was probably less than helpful which I’ve already admitted but, as I said, you’re not listening to structured advice & appear to be sticking your head in the sand. If you read my post correctly, I never suggested you “pay” anyone; I merely said that doing it properly & in accordance with BR’s might involve more work & expensive than the weekend “quickie” job you thought it was going to be!

So you have been on this forum since 2005 - big deal is that a badge of honor, am I supposed to be impressed? So act in a mature way.
No badge of honour & I don’t expect you or anyone else to be impressed. All I do is pass on the considerable, professional expertise I have acquired over many years but like any mortal am not infallible. If you would rather follow wishful thinking rather accept advice, that’s entirely your prerogative but others have told you the same thing; as I said, my profile speaks for itself & I have many, many satisfied “customers”.

Last comment you will get from me unless you become offensive! ;)
 
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If you read the BS EN documents mentioned within Approved Document G it specifically states "No other connections shall be made to the discharge pipework"

Which BS EN are you referring too as there are numerous references ?
 
You’re doing notifyable work in any case so I assume you will be submitting a Building Notice? It will be interesting to hear what the BI says when he sees it, please post when you know.

I will let you know what the BI says. Though they did not say no on the phone - and no it was not the cleaner!

I said, you’re not listening to structured advice & appear to be sticking your head in the sand.

Asking questions and debating received opinion and practices is hardly the sign of head in the sand approach.

Last comment you will get from me unless you become offensive! ;)

I am not being the one being offensive!
Name calling is not really an adult way to behave let alone be professional even on a forum
 

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