toilet ballcock valve

[ray316]

i need to replace my valve on the toilet and would like some help on what kind of valve l could get which is adjustable on the thread length if there is any..
It is a bottom entry valve l need and as there is no play for the inlet supply pipe if l get a valve with a shorter thread length than the one l have on at the moment (if l cannot get one the same thread length) it will not connect to the inlet connection. so l wondered if there is a valve out there that is adjustable for the thread length as l know there is some that are adjustable for the height..

 

[Charnwood]

Thread length on bottom entry valves is standard, no options.

http://www.screwfix.com/p/fluidmaster-brass-shank-bottom-entry-fill-valve/47792

What's the thread length on the existing valve?
You could use a 1/2" tap extension. but then you'll have the problem of seating/sealing the valve.

 

[buck51]

Cut the pipe back and fit a flexible tap connector.

http://www.screwfix.com/p/flex-tap-connector-valve-15mm-x/18417

 

[ray316]

Thread length on bottom entry valves is standard, no options.

http://www.screwfix.com/p/fluidmaster-brass-shank-bottom-entry-fill-valve/47792

What's the thread length on the existing valve?
You could use a 1/2" tap extension. but then you'll have the problem of seating/sealing the valve.

Will this valve fit any cistern...

 

[Charnwood]

With a bottom connection, yes.

What's the thread length on the existing valve?

 

[ray316]

Will a flexi tap 15xx1/2x300 work with a fibre washer put in both ends..

 

[Charnwood]

Will a flexi tap 15xx1/2x300 work with a fibre washer put in both ends..

The 15mm end is a compression joint, nut and olive.
Are you talking about removing the nut and olive (leaving a male 1/2" thread) and putting that into the existing swivel connector?
Surely, there's not enough room to do that?