Looking for 15mm Hepworth Isolation Valve

Hi
I am looking for a 15mm Hepworth Isolation Valve for my customer here in Australia.
I have contact various retailers in the UK and have been advised that this particular part is no longer available. Does anyone possible have one or know were I could some one that has the same fit form and function. My customer has been looking for nearly 3 months and has now asked me to help them.

I have attached photos of what my customer is looking for.....

If you are able to help please email us on rbpmachining@iinet.net.au


Thank you
Denise & Andy
Perth Australia