On-off valve for a gas injection system, particularly of methane, for internal combustion engines

摘要

On-off valve (12) intended to be arranged at the outlet of the gas accumulation reservoir (5) in an electronic gas injection system for an internal combustion engine, presenting a valve member (18) made of metallic material, co-operating with a valve seat (20) made in a body, which is also made of metallic material, to ensure the good quality of tightness in all operative temperature and pressure conditions, with prolonged reliability in time.