Igenzura ry'ubushyuhe hamwe na valve igenzura ubushyuhe (rimwe na rimwe byitwa TCV) byashizweho kugirango bigenzure ubushyuhe bwibikorwa mugucunga umuvuduko wamazi yumuriro cyangwa gutembera muri compressor, ikoti ya tank, ibishishwa bishyushya, cyangwa ibindi bintu bishyushya.