US 12,379,035 B2
Valve, and method for manufacturing said valve
Masazumi Funato, Chiba (JP); Tetsuya Watanabe, Chiba (JP); and Mitsuru Hosokawa, Chiba (JP)
Assigned to KITZ CORPORATION, Tokyo (JP)
Appl. No. 18/269,845
Filed by KITZ CORPORATION, Tokyo (JP)
PCT Filed Dec. 28, 2021, PCT No. PCT/JP2021/048902
§ 371(c)(1), (2) Date Jun. 27, 2023,
PCT Pub. No. WO2022/145463, PCT Pub. Date Jul. 7, 2022.
Claims priority of application No. 2020-219484 (JP), filed on Dec. 28, 2020.
Prior Publication US 2024/0068577 A1, Feb. 29, 2024
Int. Cl. F16K 5/06 (2006.01); F16K 5/20 (2006.01)
CPC F16K 5/0636 (2013.01) [F16K 5/0605 (2013.01); F16K 5/0626 (2013.01); F16K 5/201 (2013.01); F16K 5/202 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A valve of a top entry type, comprising: a body having one of a depression and a projection; and a valve disc having the other of the depression and the projection on a tip end side in a direction in which the valve disc is inserted into the body, the valve disc being configured to be placed in the body by fitting the projection in the depression,
the depression having, on an opening side, a tapered section that has an inner diameter gradually decreasing toward a bottom of the depression,
a part of a tip end edge of the projection being configured to be brought into contact with the tapered section when the projection is inserted into the depression,
the tapered section being configured to guide the projection so that an entire circumference of the tip end edge of the projection is located on a bottom side with respect to the tapered section,
wherein the projection has, at the tip end edge, a first tapered section that has a diameter gradually decreasing toward a tip end,
wherein the projection has, on a base end side with respect to the first tapered section, a second tapered section that has a diameter gradually decreasing toward a tip end,
wherein a cylindrical intermediate section is provided between the first tapered section and the second tapered section.