Syphon ID wanted please.

[Gordon T]

Can anyone shed any light as to what make this syphon is please?
https://i.*********/oUAqPtE.jpg

 

[rpm]

RAK Old FLUSH VALVE (Wirquin) - toiletspares.co.uk

 

[Ben-gee]

The new Wirquin with the concertina type top to the centre overflow (grey instead of red) is readily available in plumbers merchants, not many keep this old red one in my experience. The new one fits the same cradle so is easy swap.