To provide with a simple structure a piping extending device and piping extending method, capable of being applied to various piping diameters without leakage of contents and easily extending piping.
In this piping extending device 50 and piping extending method, wherein a piping 1 supplying contents 30 is sequentially extended by attaching a extension piping between a front piping 10 and a rear piping 20, this device 50 includes a carriage 55, a valve 14, a piston liner 60, a cylinder 65, a slide rack 70, and an electromagnetic retainer 75. The method has a piston liner 60 held inside the rear piping 20 by magnetic force, due to the attractive action of the electromagnetic retainer 75 and plugging the rear piping 20 during extending of piping.
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SHIMIZU NOBUHIKO
TATEISHI YOJI
DOBASHI ISAO
KANO OSAMU
ISHII TAKAO
SHINWA IND
SAGAMI SAABO KK