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What is the part nuber for a ball valve in a closed coupled villeroy bosh ?

I I have a close coupled wc cistern villeroy Bosch. The syphon has a geberit washer and the ball valve is side entry with what looks like a 10mm chrome feed. My question is, what is the part number for the ball valve and also the part number for the syphon washer?
Beccey, August 2015