GFB's SV52 is a compact, high-flow, atmospheric dump valve. It combines a huge boost pressure capacity of 300psi with a tiny 86mm height. This makes it ideal for turbo conversions or swaps where you're cramming more turbo into the engine bay than the manufacturer ever intended.Huge boost capacity for big turbosSmall 86mm form factorRugged piston designThe new GFB SV52 combines a lot of desirable attributes in one valve. It has a 300psi max boost capacity which is enough for almost any application. It's also just 86mm tall which is especially compact for this class of dump valve.It comes with two springs, and pre-load adjustment enabling you to precisely dial in the pressure you want. 300 psi is a huge max capacity, suitable for big turbos and high boost.The valve is billet machined from aluminium for strength and uses a piston design for long life and durability.This is an atmospheric blow-off valve.