Will this adaptor connect this pipe to this fitting?

Brimble

Thanks. So just one further question on this before I buy the adaptor (and one remaining concern...):

Lots of web pages say you should never put a metal male into a plastic female, but that is what I would be doing here, is it ok in this instance for some reason? If not, how else would I do it? I looked for an adaptor that is the same but with a plastic male part, and that doesn't seem to exist; then I looked to see if I can fit a second adaptor to the above adaptor, the second one being metal female and plastic male, but that doesn't exist either... Any ideas on that? (EDIT: Though actually I'm a bit confused about the adaptor I posted originally, it looks like metal but says 'plastic' in the product name, and says "Pipe fitting material: Plastic" in the specification...???)

Once that's resolved, my last concern will be about whether or not the hoses are long enough - having measured it, I think it will reach, but the hose will have to be pulled quite a bit where it connects to the device, I assume they're made to withstand that (being 'flexi')?

WIAWSNB

Brimble said:

Thanks. So just one further question on this before I buy the adaptor (and one remaining concern...):
Lots of web pages say you should never put a metal male into a plastic female, but that is what I would be doing here, is it ok in this instance for some reason? If not, how else would I do it? I looked for an adaptor that is the same but with a plastic male part, and that doesn't seem to exist; then I looked to see if I can fit a second adaptor to the above adaptor, the second one being metal female and plastic male, but that doesn't exist either... Any ideas on that? (EDIT: Though actually I'm a bit confused about the adaptor I posted originally, it looks like metal but says 'plastic' in the product name, and says "Pipe fitting material: Plastic" in the specification...???)
Once that's resolved, my last concern will be about whether or not the hoses are long enough - having measured it, I think it will reach, but the hose will have to be pulled quite a bit where it connects to the device, I assume they're made to withstand that (being 'flexi')?

Your confusion is understandable :-)

You can put a metal fitting and pipe into a plastic push-fit fitting, but you just need to check that the leading edges of the metal fitting isn't sharp. Plastic pushfits use rubber O-rings to seal them, and these can be damaged by a sharp metal edge. But, provided you de-burr a pipe, or use a properly-finished fitting - like the one you linked to will be - then you should have no problems at all. 

That Hep2O spigot - is it metal? Sure looks to be! Yes, utterly confusing content, but the reference to 'plastic' will be the actual type of fittings this adaptor will be used with. But, poor description.

Could you confirm a couple more things, please: the flexi that you have is deffo 22mm at both ends? You say it has 22mm embossed on the female end? Ok, see if the male end fits in there - NB don't push it in more than a couple of mm to check! 

Ok, assuming both ends are 22mm, then the spigot you referred to is the correct item. The only thing then is, how do you get that spigot to be a watertight seal on the end of the blue valve? If you are lucky, the spigot will come with a round, flat, fibre or rubber washer that sits inside the threaded part, and this will seal against the blue valve once it's screwed on fully. However, I see no reference to such a washer. In that case, you may need either jointing compound (potable), or PTFE tape. I prefer compound myself, but see what others say.

And the other matter to confirm is, what is this yellow insert on the WS? Is it a dust cap? Does it remove? If not, how will 22mm male fitting go in there? 

Finally, the flexi lengths. Yes, flexis are designed to be flexible, and are pretty tough. However, they are not meant to have sharp bends put in them - any suggestion of them creasing or folding, then they need to be rearranged. Can you pull on them? Yes, but they won't stretch! 

So, if they are too short, then you either need longer ones, or you need to add some extra pipework. 

Brimble

That is so helpful, thank you so much!

Yes the new flexi is definitely the same at both ends - the male end fits securely into the female end. I've added pictures of both, showing the numbers written on them.

Question: When you say if the adaptor 'spigot' doesn't come with a seal I should use jointing compound (potable), or PTFE tape, why wouldn't I just purchase a seal separately? Or might it be difficult to get the right size/fit etc? But happy to use either of the other two if it's straightforward.

Yes that yellow insert seems to be a dust cap. It's loosely fitting, and obviously the hose doesn't go on when that's there, so I've removed it.

RE: short flexis, I'm definitely not creasing or folding, if anything I'd actually be more concerned that I might be slightly pulling on the neck of the appliance connection, but that does seem to be quite robust so I think it's ok. But let's see when I've got the adaptor - if they are too short (and if so, would only be a few mm short, which is annoying, but hey ho), we'll have to explore best options to resolve...

 

bjorn_toby_wilde

The adaptor should come with a seal (a rubber washer). I’d be very, very surprised if it didn’t have one in the packet as it wouldn’t work without one. The adaptor will fit fine into your push fit hose. Hep2O make the plastic fittings too so it’s compatible.

WIAWSNB

Brimble said:

That is so helpful, thank you so much!
Yes the new flexi is definitely the same at both ends - the male end fits securely into the female end. I've added pictures of both, showing the numbers written on them.
Question: When you say if the adaptor 'spigot' doesn't come with a seal I should use jointing compound (potable), or PTFE tape, why wouldn't I just purchase a seal separately? Or might it be difficult to get the right size/fit etc? But happy to use either of the other two if it's straightforward.
Yes that yellow insert seems to be a dust cap. It's loosely fitting, and obviously the hose doesn't go on when that's there, so I've removed it.
RE: short flexis, I'm definitely not creasing or folding, if anything I'd actually be more concerned that I might be slightly pulling on the neck of the appliance connection, but that does seem to be quite robust so I think it's ok. But let's see when I've got the adaptor - if they are too short (and if so, would only be a few mm short, which is annoying, but hey ho), we'll have to explore best options to resolve...

 

Thanks - that's very clear.

(Interesting that the female end has two sizes - I wonder if the end detaches - unscrews - to reveal the 3/4" size? Anyhoo, diversion - not important!)

The only Q now is whether the 'adaptor' requires any form of sealant or washer. If it's as btw says, then jobbie jobbed - use the supplied washer. 

If it doesn't, then you need an alternative. 

Since it's now pretty clear that you are on the right tracks, I see no harm in buying a couple of these adaptors, and seeing what's included. Hopefully a washer. 

If there isn't a washer, then your options are to find a suitable washer, use PTFE tape which is cheap and will most likely work fine, or play safe and go joint compound such as https://www.screwfix.com/p/fernox-hawk-white-jointing-compound-400g/69694#product_additional_details_container

Bear in mind that this stuff is only if you ain't going to drink the water from the WS, which I presume you ain't?

This will do the same job: https://www.screwfix.com/p/essentials-ptfe-tape-12m-x-12mm/76841

Brimble

Great, looks like we're on the right track then, thanks. I'll go get those adaptors on Wednesday and 'report back'.

Brimble

Presumably if I find I could do with a few mm extra, could I just connect something like these between the tap and the adaptor?

ERGAOBOY 2 Pcs 100mm 3/4" Female to 3/4" Male BSP Thread Nipple Cast Pipe 304 Stainless Steel Pipe Fittings : Amazon.co.uk: Business, Industry & Science

3/4 Inch Pipe Tap Extension Thread Cast Iron Brass, 10-60mm


Or would I be better to extend at the appliance end, using a push-fit extender / elbow (which would help with the direction of my pipes), using something like these:

Flomasta Plastic Push-Fit Equal 90° Stem Elbow 22mm - Screwfix

FloPlast FloFit+ Plastic Push-Fit Equal 90° Stem Elbow 22mm - Screwfix

Push-Fit 22Mm Pipe Fittings and Plumbing at B&Q


Or should I just ignore the supplied hoses and buy longer ones (though I can't easily find examples of exactly what I'd need, i.e. flexi push-fit with male and female ends...


Or is there a better / safer way?

WIAWSNB

Brimble said:

Presumably if I find I could do with a few mm extra, could I just connect something like these between the tap and the adaptor?

ERGAOBOY 2 Pcs 100mm 3/4" Female to 3/4" Male BSP Thread Nipple Cast Pipe 304 Stainless Steel Pipe Fittings : Amazon.co.uk: Business, Industry & Science

3/4 Inch Pipe Tap Extension Thread Cast Iron Brass, 10-60mm

Or is there a better / safer way?

Yes, these should do, and the cheaper brass one is fine. These will need jointing compound or PTFE tape to make them watertight, but that's fine.

An alternative solution could be to use a longer flexi, and these 22mm female-to-male push types are often used for power showers to connect to the pump. What length is the current one? You could theoretically just buy one extra hose, and join the two you have together to make the other longer one. 

But, if the metal extension piece gives you the extra required inch or so, then a good solution. And being visible under the sink, you can monitor them for drips - tho' I'm sure it won't :-)

Brimble

WIAWSNB said:

Brimble said:

Presumably if I find I could do with a few mm extra, could I just connect something like these between the tap and the adaptor?

ERGAOBOY 2 Pcs 100mm 3/4" Female to 3/4" Male BSP Thread Nipple Cast Pipe 304 Stainless Steel Pipe Fittings : Amazon.co.uk: Business, Industry & Science

3/4 Inch Pipe Tap Extension Thread Cast Iron Brass, 10-60mm

Or is there a better / safer way?

Yes, these should do, and the cheaper brass one is fine. These will need jointing compound or PTFE tape to make them watertight, but that's fine.

An alternative solution could be to use a longer flexi, and these 22mm female-to-male push types are often used for power showers to connect to the pump. What length is the current one? You could theoretically just buy one extra hose, and join the two you have together to make the other longer one. 

But, if the metal extension piece gives you the extra required inch or so, then a good solution. And being visible under the sink, you can monitor them for drips - tho' I'm sure it won't :-)

Aha, I wouldn't have thought of joining the two short ones together, good money-saving tip! The ones that came with the device are only 50cm long - it's a common complaint in the reviews...

I'm still struggling to find a male to female 22mm push one though - perhaps I'm missing a key word or something, but "22mm female-to-male push fit hose" doesn't seem to bring up any appropriate options, all the Google answers for that are either male to male, or BSP type connectors. Maybe I'm being dumb somehow.

(EDIT: Ifall else fails, I guess I could just buy two more of the ones I've already got, and connect them together too! Water Connection Hoses 50cm, Ideal For Water Softeners | eBay UK  - at £16 it's not the cheapest option, but hardly breaking the bank).

Also apologies, I edited my post later to add another option, the plastic push-fit elbows at the appliance end - would that be a better or worse solution, or does it not really matter?

WIAWSNB

Brimble said:

Aha, I wouldn't have thought of joining the two short ones together, good money-saving tip! The ones that came with the device are only 50cm long - it's a common complaint in the reviews...
I'm still struggling to find a male to female 22mm push one though - perhaps I'm missing a key word or something, but "22mm female-to-male push fit hose" doesn't seem to bring up any appropriate options, all the Google answers for that are either male to male, or BSP type connectors. Maybe I'm being dumb somehow.
(EDIT: Ifall else fails, I guess I could just buy two more of the ones I've already got, and connect them together too! Water Connection Hoses 50cm, Ideal For Water Softeners | eBay UK  - at £16 it's not the cheapest option, but hardly breaking the bank).
Also apologies, I edited my post later to add another option, the plastic push-fit elbows at the appliance end - would that be a better or worse solution, or does it not really matter?

Good find, the 50cm hoses. Not cheap, but not costly either for a pair.

It really comes down to just how much extra you require. If adding an elbow at the WS gives the extra distance and makes connection easier, then that's a great call - if you add 'spigot' to the push-fit elbow description, you should get ones that go straight on:

https://snhtradecentre.co.uk/product/polyplumb-22mm-spigot-elbow-push-fit/

Where does the WS live - in the next base unit? And will the connecting sockets be facing that partition? Anyhoo, set it up;- plug the hoses in (making sure you understand how to release them...), thread them through the partition, and bring the ends up to the valves - and work out how many inches you are short. Then decide - do you want to extend straight at the valves by a couple of inches, or would it work best with an elbow at the WS, and finally what is the 'best' solution; would an extra 50cm of flexi make life easier, or would it add annoying flexi that will get in the way? 

With flexis, at least you know it'll fit, no stress.