| 摘要 |
A valve mechanism for dispensing viscous, sticky materials from a container having a neck defining a discharge opening. The valve is formed by a tubular body threaded at one end for engaging the container neck. A normally closed spring biased valve in said body controls the discharge of material from said container. The valve body defines a spheroidal dispensing cavity opening through one end thereof for accessibly retaining for subsequent use an increment of material discharge from the container through the valve. In an alternative version, a ball valve is so seated as to preclude wedging of the material into the valve seat.
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