Unsure how to stop a leak.

[Harvest Fields]

From the look of the picture the 15mm copper pipe into the bottom of the inlet valve is at an angle. Even though personally I do not fit Toilet inlet valves that do not have a brass shank, before buying a new one I would loosen the nut that holds the valve to the cistern, attach the valve to the 15mm copper making sure the washer inside is in good condition (if not change it) then tighten the nut back onto the cistern. This should work. Dependant on the pressure caused from the angle of the 15mm. Sorry for the long response.

 

[Wooloff]

From the look of the picture the 15mm copper pipe into the bottom of the inlet valve is at an angle. Even though personally I do not fit Toilet inlet valves that do not have a brass shank, before buying a new one I would loosen the nut that holds the valve to the cistern, attach the valve to the 15mm copper making sure the washer inside is in good condition (if not change it) then tighten the nut back onto the cistern. This should work. Dependant on the pressure caused from the angle of the 15mm. Sorry for the long response.

I think it just looks bad in the photo. When it was connected there's no pressure or angle on the pipe, there's actually quite a bit of movement in it. Not sure if that's a good thing or not.

 

[Harvest Fields]

As long as it is straight and the washer is good it should seal nicely. But the plastic shanks aren't that great, which is why we all recommend brass shanks. The thread on yours does look a little damaged but if your gentle and don't force it, it should seal.

 

[moonlight]

You may be lucky, wrap ptfe around your valve and try to tighten gently.

 

[rpm]

From the look of the picture the 15mm copper pipe into the bottom of the inlet valve is at an angle.

Also noticed the pipe angle but the pipe below the iso valve I think is plastic and the pipe above the valve is White painted copper.

 

[moonlight]

You could use Thomas Dudley Hydroflo float valve with brass tail.

 

[ShaunCorbs]

You could use Thomas Dudley Hydroflo float valve with brass tail.

still have the same issue tho, the tails arnt any longer

 

[moonlight]

still have the same issue tho, the tails arnt any longer

It's not the pipework that's short, it has dropped down. The original post with the picture, shows cross threaded float valve.

 

[Wooloff]

All done are sorted now. Thanks everyone for the help.

Went with the new Fluidmaster valve and some jointing compound on the washer. All seems good, no leaks