"a mushroom-shaped valve that rises perpendicularly from its seat; commonly used in internal-combustion engines"@en-us . "03983928-n"^^ . "103833289"@en-us . . "a mushroom-shaped valve that rises perpendicularly from its seat; commonly used in internal-combustion engines"@en-us . . . "0"^^ . . . . "poppet valve"@en-us . . . . "0"^^ . . "103983928"^^ . "poppet"^^ . . . "poppet"@en-us . .