A type of bicuspid aortic valvue (BAV) characterized by the presence of two raphes that each extend from the commissure to the free edge of the two underdeveloped, conjoint cusps. This type of BAV has developmental anlagen of three cusps, commissures, and sinuses, but two commissures are more or less malformed and obliterated, giving rise to a raphe, a fibrous ridge, which extends from the commissure to the free edge of the two underdeveloped, conjoint cusps. This type of BAV is typically associated with a high degree of aortic stenosis. The phenotype is Two-raphe bicuspid aortic valve (HP_0031122).