 A good blow
off valve is an absolute necessity for high performance turbo
systems. A well-engineered blow off valve prevents turbine damage
by quickly relieving excess boost pressure without sacrificing
boost response. Conventional blow off valve designs require
choosing between flow capacity and boost response - blow off
valves with high flow capacity generally have poor boost response,
while blow off valves with good boost response are not able
to handle high flow capacity. A'PEX engineers have developed
a solution to this dilemma by creating the Twin Chamber Blow
Off Valve. The Twin Chamber Blow Off Valve is an adjustable,
high-response unit for use on a wide range of applications.
Rather than relying on the vacuum chamber alone, the Twin Chamber
Blow Off Valve harnesses boost pressure in a second chamber
to assist in opening the relief valve. This design allows the
use of a unique flat-valve design, which provides excellent
valve response under both low and high boost conditions without
sacrificing flow capacity. Valve reaction is adjusted by tightening
or loosening the spring tensioning screw on top of the unit.
Blow off sound can be adjusted by turning the red collar at
the base of the unit. With its innovative design and adjustment
features, the Twin Chamber Blow Off Valve is flexible enough
for use on street cars as well as racecars.
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