converter outlet relief valve tap

valve tap

pressure cutoff valve pressure tap

relief valve pressure tap

underspeed valve throat pressure tap

underspeed valve upstream pressure tap

valve pressure tap

tap-tap

gas valve valve seat

valve-valve base

Valve-valve seat

tap to tap time

tap to tap time of converter

Tap-to-Tap

tap-to-tap cycle

Tap-to-Tap Time

auxiliary valve relief valve setting

bell- shaped valve cup valve

blade control valve relief valve