mark_wrx

had a forge dump valve cheap today and was wondering if its the twin piston type they recomend for a scoob , i have opened it up and there is a blue nylon piston with o rings with spring and a white like stopper with a spring ,behind the blue nylon there is a a silver spring not red or blue like most mention on here , can anyone help pls .
cheers mark

UkLegacyT

has it got any code or numbers etched onto it mate ?

mark_wrx

no nothing at all

UkLegacyT

hmm, thats a bugger. i know somebody with a twin piston forge, i'll try and find their email and tell em to look at your piccy, as they had theirs apart to shim it.

ian

mark_wrx

cheers..

mark_wrx

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scoobystutoo

yes its a twin.
Stu

MorayMackenzie

Indeed it is. The white piston is the non-return valve, the blue piston is the main blow off valve.

mark_wrx

thanx guys .