To provide an improved push down head capable of always stably blowing liquid out, providing good liquid break and easy push down in liquid blowout by fitting a main body A2 having a valve member A3 built therein on an installation tube member A1 fitted on an upper end part of a stem 21 erecting in such a manner that the same can be pushed down under a condition of energized upward, in such a manner that the main body can slide down, and enabling a pump to be formed short and compact while showing the effects mentioned above.

An annular slide piece 31 projects from an upper part of an installation tube 30 having the installation tube member fitted to a stem outer circumference upper end part, and a cylinder tube can slide on an outer side of the stem. A guide member guiding a rear end part of a valve member obliquely backward and upward is provided to construct a structure drawing out the valve member. As a result, existing lever member can be eliminated.

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