Well i took apart my Forge D/V and noticed there's a big bloody hole in the diaphram (sp?)! Not what i expect after 6 or 7 months of use since new!

Replaced it with my standard Bosch one for now and hope my new Forge Splitter Valve arrives on monday! :D

yes ring forge and they will send you some replacement parts for it! Then sell it on here or ebay as your splitter valve should be coming soon