Title:
DRAIN PIPING JOINT
Document Type and Number:
Japanese Patent JP2023160921
Kind Code:
A
Abstract:
To provide sufficient fire resistance performance in a drain piping joint, suppress drainage noise, and suppress an increase in the outside diameter of the pipe.SOLUTION: A drain piping joint 100 comprises a pipe body 110 formed of a plurality of resin injection molded parts and placed in a through hole of a floor slab, an upper vertical pipe connection 120 that protrudes above the floor slab and connects an upper floor side drainage vertical pipe 220 that allows drainage from the upper floor to flow in, a lower vertical pipe connection 130 that protrudes below the floor slab and connects a lower floor side drainage vertical pipe 230 that allows drainage to flow down to the lower floor, and a horizontal branch pipe connection 140 that connects a drainage horizontal branch pipe above the floor slab. Between the horizontal branch pipe connection 140 and the lower vertical pipe connection 130 in the pipe body 110, formed is a swivel vane 114 that protrudes from the inner surface of the pipe body 110. A recess 112 corresponding to the swivel vane 114 is formed on the outer surface of the pipe body 110, and the recess 112 is filled with a thermally expandable refractory material 116.SELECTED DRAWING: Figure 1
Inventors:
YAGI HIROSHI
ABE YOSHITAKA
MIURA TAKUMU
ABE YOSHITAKA
MIURA TAKUMU
Application Number:
JP2023143119A
Publication Date:
November 02, 2023
Filing Date:
September 04, 2023
Export Citation:
Assignee:
KUBOTA CHEMIX CO LTD
International Classes:
E03C1/12; F16L1/00; F16L5/04; F16L41/03; F16L55/00
Attorney, Agent or Firm:
Yasuda Okamoto Patent Attorneys Corporation
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