BSP male to Metric fine thread female

[rpm]

I am therefore looking for 2 reducers that will reduce a BSP 20mm male pipe to a Metric 16mm female fine thread pipe (the pitch = 1 i.e. 1 thread per 1mm, hence ‘fine thread’).

I have looked on line and found many reducers, some of which go from 20mm BSP to Metric 16mm but not with fine thread (1 thread per mm).

If anyone can point me in the right direction then I would be most grateful.

Many thanks,

Paul.

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.

 

[Riley]

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.

It’s a good option at least if it were done by an engineer they would likely not knacker the taps integrity

 

[rpm]

It’s a good option at least if it were done by an engineer they would likely not knacker the taps integrity

I`m talking about the reducers as the OP wants, nothing else would be machined.

 

[Riley]

Ohhhhhhhhhh sorry I thought you meant the engineer to alter the existing thread

 

[rpm]

Ohhhhhhhhhh sorry I thought you meant the engineer to alter the existing thread

That would be easy to bush to whatever the OP wanted.

 

[Riley]

Well yes but I’m still inclined to think that based on his pics he’s either going to have to cut down the thread on the tap too or get a smaller overflow

 

[rpm]

I`m not even sure where these reducers he wants are going to be in the pipework, just saying it can be done.

 

[snowhead]

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.

 

[Paul Strang]

Unless it's taken you six years, if you were sold the tap overflow and bath as single 'system' you can probably claim that it is unfit for its intended purpose and send it back for a refund using contract law as the basis for the claim. Consult your solicitor or the CAB if you want ot pursue this avenue.

If you're stuck with it, what you are proposing as a solution seems a bit marginal to me. If the other suggestions above don't suit, can you close the central hole with a nice chrome blanking plate and install a couple of traditional separate hot and cold taps on either side? They'll be much less trouble in the long run that any 'designer' mixer.

Don't forget to repace the window with obscuring glass BTW.

Can't you get a low profile overflow?

hi Mike, think I mentioned somewhere after your suggestion but thought best reply to you cause I don’t want you think me rude and I appreciate your suggestion...

I did investigate other overflow options and I found that given the very narrow edge on the bath there was only one very cheap looking set that would allow the tap to fit in the centre without hitting it. Also we kind of liked the nice fittings that came with the one we had so we were keen to find a solution with the plumbing of the tap.

 

[Paul Strang]

Unless it's taken you six years, if you were sold the tap overflow and bath as single 'system' you can probably claim that it is unfit for its intended purpose and send it back for a refund using contract law as the basis for the claim. Consult your solicitor or the CAB if you want ot pursue this avenue.

If you're stuck with it, what you are proposing as a solution seems a bit marginal to me. If the other suggestions above don't suit, can you close the central hole with a nice chrome blanking plate and install a couple of traditional separate hot and cold taps on either side? They'll be much less trouble in the long run that any 'designer' mixer.

Don't forget to repace the window with obscuring glass BTW.

Hi Chuck thanks for educating me on the 6 year rule and CAB and solicitor. It is useful to know this exists. It just seems like an antagonising path that could be littered with ill feeling. Great idea about filling the overflow hole. But the taps we bought were pricey and match other taps and fitments in the bathroom so we are trying to find a way to work around them. Many thanks for your time.

 

[Riley]

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

 

[Paul Strang]

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.

 

[Riley]

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

 

[Paul Strang]

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.

 

[Riley]

I’m out