Transfer Port/Valve Size

[kena]

Hi gents,
I had a little trouble quite a while back with a Mk2 Rapid which I am pleased to say is well sorted now thanks to help from members on here and the old forum. I do have a question though
Can any one tell me the correct size of black valve and barrel transfer port for the different variants of sub 12ftlb rifles as they left the factory both regulated and non regulated. I can't say I've ever seen a list anywhere with this info
Thanks in advance,
Ken

[KevG]

if we start with sub 12ftlbs valve body port on reged is 6mm.but all sub 12ftlbs mk2s will be reged.barrel port 4mm stepped down to 3mm were it enters bore.now fac valve front port is same as sub 12ftlbs if reged and if not reged 5.5mm.barrel 4mm straight through.can have a  slight counter sink of 6mm
KevG

[kena]

Thanks Kev, what kicked off the question was the black valves advertised on an airgun spares website (although they are not in stock). They were described as Part No. TH202151 Small, TH202152 Medium and TH202153 Large

[KevG]

yes there are 3 basic sizes.the mk1 as a 5mm front ported valve.also the first elans had 4.7mm ports
KevG