Fill valve

[underdog]

Hi all I’ve come by a old type s400 it as the old style fill valve. Will the new AA T bar fill valve screw in as a direct replacement ?
Or I can leave old fill valve on gun but what number is the connector that goes onto it then to the air cylinder so I can fill it up please, there’s so many fittings in Best Fitting it’s a bit confusing
Thanks for any help

[Outandabout]

Contact Julian on the air arms spares page
I'm sure he could help you out - and even supply what you need.
Cheers
Kevin