US 11,655,901 B2
Gate valve
Hiroyuki Bekki, Osaka (JP)
Assigned to WATERWORKS TECHNOLOGY DEVELOPMENT ORGANIZATION CO., LTD., Osaka (JP)
Appl. No. 17/603,368
Filed by WATERWORKS TECHNOLOGY DEVELOPMENT ORGANIZATION CO., LTD., Osaka (JP)
PCT Filed May 20, 2020, PCT No. PCT/JP2020/019944
§ 371(c)(1), (2) Date Oct. 13, 2021,
PCT Pub. No. WO2020/235594, PCT Pub. Date Nov. 26, 2020.
Claims priority of application No. JP2019-097128 (JP), filed on May 23, 2019; and application No. JP2019-097129 (JP), filed on May 23, 2019.
Prior Publication US 2022/0205546 A1, Jun. 30, 2022
Int. Cl. F16K 3/316 (2006.01); F16K 3/02 (2006.01); F16K 27/04 (2006.01); F16L 55/105 (2006.01); F16L 21/06 (2006.01); F16L 21/08 (2006.01)
CPC F16K 3/316 (2013.01) [F16K 3/0227 (2013.01); F16K 27/044 (2013.01); F16L 21/065 (2013.01); F16L 21/08 (2013.01); F16L 55/105 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A gate valve comprising:
a valve body capable of closing a flow passage by being inserted between a pair of fluid pipes;
a valve cage disposed between the pair of fluid pipes and accommodating the valve body; and
a sealing band configured to cover between the pair of fluid pipes and the valve cage under a sealed state;
the valve cage including a pair of protruding tubular portions protruding from a body of the valve cage in a pipe axis direction of the fluid pipes; and
the sealing band including a pair of main body portions and a connecting portion connecting the pair of main body portions and formed unitarily therewith, the sealing band being constituted of a plurality of split members split in a circumferential direction of the fluid pipes, the pair of main body portions covering the respective fluid pipes and the protruding tubular portions under a sealed state, the connecting portion being opposed to a lateral face of the valve cage body extending along the pipe axis direction.