VALVE IS FREE FLOW, DIAPHRAGM, DAMPENER (TESTED, GREEN DOT)
ACHTUNG FOR MECHANICS & TECHS:
THIS DAMPENER VALVE VACUUM IS ADJUSTABLE.
SEE PICTURE ABOVE.
ADJUST, FINE TUNE SCREW IN AND SEAL BEFORE INSTALLATION.
ENG GROUP RACING: STAINLESS STEEL, WILL NOT CORRODE, RUST.
WE RECOMMEND ONLY PROFESSIONAL INSTALLATION