| 摘要 |
PROBLEM TO BE SOLVED: To provide a valve which significantly inhibits adherence of impurities to the valve even if the impurities and corrosive gases are included in compressed air and thereby maintains functions of a non-return valve for a long time, and to provide a pressure maintaining valve with a non-return valve which includes the valve.SOLUTION: A valve 30 includes: a valve seat 32 which closes a seal surface 23c enclosing a passage of a compressed gas G; a cylindrical valve rod 34 extending in a direction perpendicular to the seal surface 23c; and a resin pad 36 which is attached to an outer peripheral surface of the valve rod 34, includes an outer peripheral surface configured to slide on an inner surface of a valve guide hole 24a, has a hollow cylindrical shape, and is made of a self-lubricating resin.SELECTED DRAWING: Figure 7 |
