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BSP male to Metric fine thread female

View the thread, titled "BSP male to Metric fine thread female" which is posted in UK Plumbers Forums on UK Plumbers Forums.

Something has to give mate and I would not be doctoring a “pricey” tap as it will throw any warranty comeback you have out the window
 
I`m not even sure where these reducers he wants are going to be in the pipework, just saying it can be done.
Hi RPM, I managed to find something very nearly what I needed on eBay, a simple reducer with 1/2” BSP on the male side to a Metric M16 female. The only problem is it wasn’t fine enough thread to be M16x1 I.e. 1 thread per 1mm. I also found one with 1/2” BSP male to M16x1.5 female. So I am close, perhaps I can get something engineered. I still can’t believe that with all these taps flying around that they don’t exist aplenty.
 
As I keep saying the tap manufacturer will give you everything they believe you need they won’t take into account that it may not fit with the overflow. They won’t expect you to be buying parts to change it
 
Firstly I hope you've got good mains pressure Hot water otherwise the bath will be cold before it's half full.
All of the water is going through the 16mm outside diameter brass pipe.

The problem with what you're trying to do is it would involve non standard U.K plumbing fittings and would need to be fitted after the tap spout was installed. And there's not much room to play with.
The end of the 16mm pipe will need cutting down rethreading to a thread to match any fitting you can get and an elbow fitted on it to miss the overflow.
Hi Snowhead, you clearly bring a lot of experience to the table compared to me, however rather than look to rethread I would either look for a product that already exists with this thread (a small vertical reducer eg see photo) or have one engineered.

I just replied to someone below that I managed to find a small reducer with 1/2” BSP on the male side to a Metric M16 female. The only problem is it wasn’t fine enough thread to be M16x1 I.e. 1 thread per 1mm. I also found one with 1/2” BSP male to M16x1.5 female. So I am close. These things are in total about 12mm long so would fit in the space I have available and I would just attach a BSP 1/2” flexihose. Your suggestion of an elbow I think is the same. Sincere thanks for taking the time to consider my problem. If you know anywhere that provides these products then please do let me know.

E59DC281-2534-43DB-9768-3B829E2D738F.jpeg
 
Hi RPM, I managed to find something very nearly what I needed on eBay, a simple reducer with 1/2” BSP on the male side to a Metric M16 female. The only problem is it wasn’t fine enough thread to be M16x1 I.e. 1 thread per 1mm. I also found one with 1/2” BSP male to M16x1.5 female. So I am close, perhaps I can get something engineered. I still can’t believe that with all these taps flying around that they don’t exist aplenty.
The thing you seem to forget is that it didn`t come as a whole thing in a box did it plus you had the hole drilled in the bath for the tap postion. That is why these bushes do not exist aplenty as you put it.
 
Just to be clear Paul the OP has been very good in respect of the answers he has been given and his response.
 
As I keep saying the tap manufacturer will give you everything they believe you need they won’t take into account that it may not fit with the overflow. They won’t expect you to be buying parts to change it
Hi Riley, thanks for all your input. It was the high street shop that sold it to me with the overflow...which is what was frustrating. I contacted the manufacturer in the event they have parts that can convert from one pipe size and thread to another given they sell their products over here. Sorry for any confusion, and thanks again.
 
If I had access to a lathe I think I could do it, try any small engineering company. These kind of places probably wont have a webpage so you might have to drive around small industrial estates knocking on doors.
Apologies RPM I missed this reply from you earlier...great suggestion and many thanks. I have found a small nearby engineering company that I will approach tomorrow. Sincere thanks for your time and advice.
 
It’s difficult if you guys have drilled it wrong I don’t see what you can do. Common sense to me would have been for the seller to warn you. Dare we ask which high street store??
 
It’s difficult if you guys have drilled it wrong I don’t see what you can do. Common sense to me would have been for the seller to warn you. Dare we ask which high street store??
 
Just to be clear Paul the OP has been very good in respect of the answers he has been given and his response.
Thanks RPM. I am defo a novice and I recognise that. I know I may have not been overly clear or perhaps not aware of what is possible and what isn’t. I have found very little help elsewhere and hit a brick wall, which is why I came to you guys for any guidance or suggestions. Will let you know how I get on at the engineers.
 
It’s difficult if you guys have drilled it wrong I don’t see what you can do. Common sense to me would have been for the seller to warn you. Dare we ask which high street store??
Agreed mate completely. As a responsible seller selling to someone like me I think it only fair to highlight the obvious things relating to the products being sold. If I had known then the hole would not have been drilled there. I just have to make the best of a naff situation.
 
PAUL HELLO ! DID YOU MISS MY POST GET THIS PART IT WILL SOLVE YOUR PROBLEM TAKE THE EXISTING ONE WASTE AND OVERFLOW BACK FOR A REFUND ITS NOT FIT FOR PURPOSE, START ALTERING THE BRASS WARE WILL VOID ITS WARRANTY THERE IS NO NEED TO BOTHER ENGINEERING ANYTHING . Kop

Screenshot_20190203-083251_Drive.jpg
 
PAUL HELLO ! DID YOU MISS MY POST GET THIS PART IT WILL SOLVE YOUR PROBLEM TAKE THE EXISTING ONE WASTE AND OVERFLOW BACK FOR A REFUND ITS NOT FIT FOR PURPOSE, START ALTERING THE BRASS WARE WILL VOID ITS WARRANTY THERE IS NO NEED TO BOTHER ENGINEERING ANYTHING . Kop

View attachment 36781
Hi Kop, yes indeed my mate I did see this and am checking it out this morning. Sincere thanks for going out of your way to help me.
 

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