Issuing pump for fluids, gels etc., with issuing tube of issuing pump able to move axially in pump body

摘要

The pump (10) has pump body (14) sealed at the edge to an aperture in a container lid (32), and an issuing tube (12) which can be moved axially in the pump body from the closed position against the action of a coil compression spring (18). An annular seal (22) of elastic material is fitted between the edge of the lid aperture and/or the pump body on one side and the issuing tube on the other.