butterfly throttle valve
above throttle valve EGR system
automatic throttle valve
below throttle valve EGR system
cartridge proportional throttle valve
cryogenic throttle valve
double-poppet throttle valve
Electro-hydraulic proportional throttle valve
Electronic Throttle Valve
expansion throttle valve
High pressure throttle valve
Minute-flow throttle valve
multiple throttle valve
Opening of throttle valve