Title:
FLUID CONTROL DEVICE AND MANUFACTURING METHOD THEREOF
Document Type and Number:
Japanese Patent JP2021139436
Kind Code:
A
Abstract:
To provide a fluid control device capable of using a single valve body regardless of a formation method of a valve box valve seat.SOLUTION: A butterfly valve 10 as a fluid control device comprises a valve body 14 and a valve box 15. The valve body 14 includes a water cutoff face 14a, a valve body valve seat 14b, valve body valve seat crimp members 14c and 14d, and an opposite face 14f opposed to the water cutoff face 14a. The opposite face 14f is constituted of opposite face constituent portions 14g and 14h which are respectively included in the valve body valve seat crimp members 14c and 14d, and the valve box 15 includes a valve box valve seat 15b. In the case where the valve box valve seat 15b is a screw type valve box valve seat 15b1 which is formed by threading to the valve box 15, the opposite face constituent portions 14g and 14h are flush and in the case where the valve box valve seat 15b is a cutting work type valve box valve seat 15b2 which is formed by applying cutting work to a metal piled up within the valve box, the opposite face constituent portions 14g and 14h are not flush.SELECTED DRAWING: Figure 3A
Inventors:
HORIGUCHI EIZO
Application Number:
JP2020037736A
Publication Date:
September 16, 2021
Filing Date:
March 05, 2020
Export Citation:
Assignee:
MAEZAWA KOGYO
International Classes:
F16K1/46; F16K1/226; F16K25/00
Attorney, Agent or Firm:
Nosho Machida
Etsuo Tada
Ichiro Fujinami
Etsuo Tada
Ichiro Fujinami