There are provided an intermediate slide valve as well as a plunger slide valve equipped in a syringe in direct contact with injection liquids and a syringe equipped with such slide valves, the injection liquids nor valves being not affected with each other. The intermediate slide valve 10 equipped in the syringe 10 comprises an approximately cylindrical first elastic body 13 and an approximately cylindrical second elastic body 14 which is jointed with one bottom surface 13c of the first elastic body13, the other bottom surface 13a of the first elastic body 13 and a side surface portion continued therefrom being laminated with a synthetic resin film 15 and the other bottom surface 14a of the second elastic body 14 and a side surface portion continued therefrom be laminated with a synthetic resin film 16.
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