| 摘要 |
A valve assembly comprising a housing and a valve member mounted within the housing rotatable about an axis and between at least a dispensing position and a further position, for instance a volume selection position during which a material can be withdrawn from a container, wherein at least one of said housing and said valve member is made of a synthetic material and the assembly further comprises a spring, which urges the valve member towards or onto an inner wall of the housing.
|
