Patent ID: 6341761
Filing Date: 2002-01-29
Classification: F15B,F16K,Y10S

Abstract:
Seated valve (S) having a housing (1), a housing bore (2) in which a valve seat (4), a cylindrical bushing (Z) and actuator (B) for displacing a closure element (E) onto said valve seat (4) are positioned, said closure element (E) having a spherical sealing surface (5) and being received axially movable within said cylindrical bushing, said actuator (B) being sealingly guided within said cylindrical bushing and being freely accessible from an outer actuating housing side (11), said cylindrical bushing (Z) being secured in place by cold flow deformation of the material of housing (1) at said outer housing side (11), characterised in that said closure element (E) is made out of a full sphere (6) with a concentrically formed waist portion (T) the diameter (d1) of which is smaller than the sphere diameter (k) but larger than the diameter (d) of said valve seat (4), and that said closure element (E) can be inserted from said outer housing side (11) into said cylindrical bushing or can be removed therefrom with the cylindrical bushing (Z) secured in place in said housing bore (2).