MEZZO DI TRATTENUTA DI UNA SEDE PER VALVOLA E RELATIVO METODO DI MONTAGGIO E DI SMONTAGGIO

摘要

A spring biased valve seat retaining means in the form of an annular sector is inserted wholly within the deeper one of two grooves formed in the inner periphery of the valve body and the outer periphery of the valve seat and snaps into the shallower groove while remaining partially in the deeper groove when the grooves are brought into registry. The shallower groove and the retaining means are formed with cooperatively inclined end portions whereby the retaining means is forced into the deeper groove upon rotation of the seat relative to the body to permit axial removal of the seat from the body.