filter bypass valve

oil cooler bypass valve

exhaust bypass valve

oil bypass valve

bypass valve

band-pass filter / bandpass filter (BPF)

dust filter / dust shield, particle filter

dust shield / dust filter, particle filter

filter housing / filter unit

filter unit / filter housing

particle filter / dust shield, dust filter

finite impulse response filter (FIR-filter)

passband filter; bandpass filter (BPF)

bypass

cooler bypass

bypass port

hand bypass pump

bypass ability

bypass а pocket

bypass an obstacle

check valve / non-return valve

non-return valve / check valve

air filter

filter-separator

fuel filter

gas-particular filter unit (GPFU)

home-made face filter

individual portable filter

oil filter

RF interference filter

filter stack

military-grade filter

slave oil filter