| 摘要 |
PURPOSE: A piston pump for supplying a liquefied material, which includes a press ring member installed in outside of a piston, is provided to prevent damage to a packing due to sugar deposit by supplying liquefied material to the inner wall of the piston. CONSTITUTION: A piston pump for supplying a liquefied material comprises a receiving member, a piston(20) and a power member. The receiving member has a space part in which a liquid material is saved. The piston comprises a mounting groove(24) and a pressing ring member(40). The mounting groove is formed at outer circumference of a piston body(22).
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