How do I connect a normal sink tap outlet to a WC cistern 1/2 float valve?

[Shires Lynx]

Hi everyone, nice to meet you all.

I am a cistern collector and from time to time I like to test them.

What I want to know is, is it possible to securely connect a normal sink tap to a cistern's float ball valve without it leaking? So I can turn on the tap and have it act as a water feed to the float ball valve without any leaks from both ends? If there is, what item do I need to do this?

I've tried hose-pipes and PVC bath/shower hoses, but I can never secure them into the float valve inlet properly, they leak and end up bursting when the pressure of the float valve closes in the cistern as it fills up.

My sink tap looks like this:

And this is the 1/2" brass float valve I have in the cistern:

So to sum up, is there a way of securely connecting the above tap and valve together without leakages from either end?

Any help will be most appreciated, thanks for your time.

 

[REDSAW]

think you need a 1/2'' female iron and some ptfe tape to seal it if the threads are the same size.

 

[Shires Lynx]

think you need a 1/2'' female iron and some ptfe tape to seal it if the threads are the same size.

Hmm, don't know plumbing items too well. Any chance of links to pictures to the 1/2" female iron item?

 

[PlumbBobBob]

something like this

 

[REDSAW]

one like this or a straight one.
also come in brass

 

[REDSAW]

found one.....

 

[Shires Lynx]

Thanks for the replies guys, this is what I'm trying to achieve, the water coming directly from the tap itself:

Where does the 1/2" female iron item come into it?

Thanks

 

[Mike Jackson]

You could try using a hozelock bib tap adaptor on the float operated valve. They come with adaptors to fit 1/2". Alternatively use a speedfit tap connector with a short length of copper and connect the hose to the copper with a jubilee clip.

 

[Shires Lynx]

You could try using a hozelock bib tap adaptor on the float operated valve. They come with adaptors to fit 1/2". Alternatively use a speedfit tap connector with a short length of copper and connect the hose to the copper with a jubilee clip.

Thanks for suggesting those two items.

As for the hose, well if its a PVC hose or garden hose it's useless as it'll split/burst due to the water pressure when float valve closes and also the pressure from the tap too.

 

[Mike Jackson]

If your water pressure is too high for a normal hose to take then you won't find a fitting that will hold on your tap. You'll ned to use some sort of bib tap with a threaded outlet or a washing machine tap.

 

[Shires Lynx]

If your water pressure is too high for a normal hose to take then you won't find a fitting that will hold on your tap. You'll ned to use some sort of bib tap with a threaded outlet or a washing machine tap.

Hmm I see. Would you be kind enough to link me to a picture of such an item for my tap?

 

[dancinplumba]

Hmm I see. Would you be kind enough to link me to a picture of such an item for my tap?

might i suggest that you google the said item

 

[Shires Lynx]

Hmm actually washing machine hoses is a neat idea, they seem strong enough to stand the pressure. But can they connect securely to a 1/2" float valve for a cistern? And even if it does, how do I connect the other end to my tap?

 

[Mike Jackson]

I'm sure I've seen appliance hoses with a 1/2" nut rather than a 3/4".

 

[dancinplumba]

Hi everyone, nice to meet you all.

I am a cistern collector and from time to time I like to test them.

What I want to know is, is it possible to securely connect a normal sink tap to a cistern's float ball valve without it leaking? So I can turn on the tap and have it act as a water feed to the float ball valve without any leaks from both ends? If there is, what item do I need to do this?

I've tried hose-pipes and PVC bath/shower hoses, but I can never secure them into the float valve inlet properly, they leak and end up bursting when the pressure of the float valve closes in the cistern as it fills up.

My sink tap looks like this:

And this is the 1/2" brass float valve I have in the cistern:

So to sum up, is there a way of securely connecting the above tap and valve together without leakages from either end?

Any help will be most appreciated, thanks for your time.

why do you have to test them ? why not just fill them with a jug ?

 

[kay-jay]

why do you have to test them ? why not just fill them with a jug ?

exactly!

you seem intent on running some kind of hose to the cistern so why not just fill with hose?? why does it need to be connected?

 

[Mike Jackson]

You don't think there is more to this than just testing do you? I'm thinking temporary toilet facilities.

 

[dancinplumba]

You don't think there is more to this than just testing do you? I'm thinking temporary toilet facilities.

me thinks its not even for a wc cistern, its not the type of valve you would normally use

 

[Pipes Plumbing]

Straight 1/2" tap connector with a stub of 15mm copper connected to it, hose warmed up and pushed over the copper held firm with a jubilee clip then run to your tap with a push on rubber tap fitting like you would on a garden hose if you didn't have an outside tap...

It is only for testing purposes though isn't it, temporary toilet facilities would be naughty...

 

[REDSAW]

your not irrigating something are yoe?????????

why not cut a valve 't' in cold pipe and connect a braided hose?.

 

[brasso1981]

Very strange is all I can say

 

[Simon F]

me thinks its not even for a wc cistern, its not the type of valve you would normally use

:iagree: the float valve pictured is a type 1 valve, it is the old type that you can only use as a like for like replacement otherwise you are going against the water regs
but again as already asked - WHY?

 

[aido]

looks very mickey mouse to me. maby a joke:32:

 

[Shires Lynx]

Well I shouldn't have to justify why I'm doing it (I did say for testing purposes, not a serious or permanent thing at all). I just came here to politely ask if there was any feasible method of achieving the connection, not to be just criticised and shot down.

Anyway to those who might still want to give advice, I was thinking, will this following method work?

1) On the tap itself, connect a tap to garden hose adaptor:

2) Use a flexible steel tap connector, on BOTH ends having a 15mm end, one end connects to the cistern's float valve, and maybe the other end just slots onto the tap adaptor? Will it fit onto the end?

 

[Simon F]

the issue is that you are asking for advice on how to connect something to the water supply that is slightly out of the ordinary. there are regulations in place to ensure the water supply does not get contaminated, what you suggest seems worrying.
if you gave more of a description as to why you want it to work perhaps the replies may be closer to what you wanted.
the process of making the connection you want is very simple, the issue is whether you should make it.