Re-looked where the leak was coming from - looks like it is highly likely 
to be from the valve itself rather than the thread - Will order a new one.

I think you can disassemble - but mine is on too tight to be able too 
(rounded off the hex nut on the top bit).

Thanks for the help.

Toby



On Thursday, 10 August 2017 20:41:12 UTC+1, bmacpiper wrote:
>
> If 5 wraps of teflon doesn’t seal it, I doubt pipe dope will either. But 
> possibly. I might try more teflon just for giggles, but probably it’s the 
> valve itself. I don’t recall if you can disassemble, but if it’s like the 
> vacuum breaker, it may just have an o-ring or other mating surface that has 
> scale, or has developed a crack. That would be my next stop.
> best,
> bmc
>
> On Aug 10, 2017, at 12:39, Toby Rose <tob...@gmail.com <javascript:>> 
> wrote:
>
> Yes the spring loaded one.
>
> Threads were cleaned, 5 wraps of tape.  
>
> Can't see a crack in it, could be that the seal on the valve where it 
> opens for an overpressure is leaking, hard to tell definately that it is 
> from the thread rather than the valve.
>
> Will see if I can get some dope tomorrow after work.
>
> Cheers
>
>
>
> On Thursday, 10 August 2017 20:19:11 UTC+1, bmacpiper wrote:
>>
>> I’m curious how many wraps of teflon tape you used? Threads cleaned 
>> first? Are we talking about the pressure relief valve, i.e. the spring 
>> loaded one? Is the mating surface of the spring loaded valve clean?
>> b
>>
>> On Aug 10, 2017, at 12:15, herman dickens <herman...@gmail.com> wrote:
>>
>> I'd try food safe liquid pipe dope. I think that will fix the problem 
>> unless there's a crack in the fitting.
>>
>> Herman
>>
>> On Thu, Aug 10, 2017 at 2:51 PM, Toby Rose <tob...@gmail.com> wrote:
>>
>>> Hi Guys,
>>>
>>> My Brewtus 4 developed a leak in the last few days.  Tracked it down to 
>>> the steam boiler safety valve.  Took it off, cleaned and checked functions 
>>> (all seems ok) and tried to re-assemble.  However it is still leaking very 
>>> slightly, and the leak appears to come from the point on where the valve 
>>> screws into the joint of cross (4 way) valve on the top of the boiler.  
>>> Tried PTFE tape on the thread and a couple of different attempts, but 
>>> always still leaking.
>>>
>>> Any top tips? I have some red locktite but hesitant to use it. 
>>>
>>> Thanks in advance.
>>>
>>> Toby
>>>
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