Cryogenic valve

The present invention provides a cryogenic valve (1) comprising: a valve body (27); a plug (37); an actuator (39); a kinematic chain (41) comprising a drive member (47) displaced by the actuator (39) and a transmission structure (49) transmitting the movement of the drive member (47) to the plug (37); a tubular bellows (65) disposed around the transmission structure (49), the tubular bellows (65) having internal corrugations (87) protruding toward an interior of the tubular bellows (65); and a protector (93) made of a material having a low coefficient of friction, the protector being placed within the tubular bellows (65) on the inner corrugation (87), the protector (93) being displaced along the displacement axis (X) together with the inner corrugation (87) when the drive member (47) is displaced along the displacement axis (X). 本发明提供一种低温阀(1)，包括：阀体(27)；插塞(37)；致动器(39)；运动链(41)，该运动链包括由致动器(39)位移的驱动构件(47)和将驱动构件(47)的运动传递到插塞(37)的传动结构(49)；管状波纹管(65)，该管状波纹管围绕传动结构(49)布置，管状波纹管(65)具有朝向管状波纹管(65)的内部突出的内部波纹(87)；保护件(93)，该保护件