Title:
CHECK VALVE AND CHECK VALVE DEVICE INCLUDING THE SAME
Document Type and Number:
Japanese Patent JP2021139470
Kind Code:
A
Abstract:
To provide a check valve which can inhibit contamination from flowing to the downstream side.SOLUTION: A check valve includes: a case having a case body, an inflow passage for flowing a fluid into the case body, and a conduction passage which guides the fluid in the case body to the outside of the case body; and a valve body which is housed in the case body and opens or closes the inflow passage. The case is housed in a housing having an outlet passage for flowing out the fluid and forms an annular passage, which connects the conduction passage with the outlet passage, between itself and the housing. The case body has an annular protruding part extending in a circumferential direction and protruding outward on its outer peripheral surface. The annular protruding part forms a narrowing part in the annular passage.SELECTED DRAWING: Figure 1
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Inventors:
KOMADA KOICHI
KURODA YUICHIRO
KURODA YUICHIRO
Application Number:
JP2020039241A
Publication Date:
September 16, 2021
Filing Date:
March 06, 2020
Export Citation:
Assignee:
KAWASAKI HEAVY IND LTD
International Classes:
F16K15/04; F16K51/00
Attorney, Agent or Firm:
Shoji Ishida