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Patent Searching and Data


Title:
BUTTERFLY VALVE
Document Type and Number:
Japanese Patent JPH0814437
Kind Code:
A
Abstract:

PURPOSE: To prevent bedewing on the outer surface of a valve by forming stem penetration parts over and under a cylinder. forming a drive manipulation/ mounting part in the upper stem penetration part in a single piece structure so that a core is formed, and covering the pressure bearing part of this core with a material having a low thermal conductivity such as resin.

CONSTITUTION: A butterfly valve concerned is for use in the pipings for a cooling, refrigerating facility, etc. wherein a core 10 equipped with stem penetration parts 12, 13 over and under a short cylinder 11 is embedded in the valve body 1, and among the stem penetration parts the one 12 is provided with a drive manipulatin/mounting part 15 in which an actuator, handle, etc. are mounted. The core 10 is made from a stainless steel plate or cylinder having a low thermal conductivity through a press working or a holding processing, and the cylinder 11 is bored with punch holes 20... in any shape. The cylinder 11 as a pressure bearing part of this core 10 and the drive manipulation/ mounting part 15 are covered 14, 16 with a synthetic resin having a low thermal conductivity such as special-reinforced polyamide resin.


Inventors:
GOMI CHIKASHI
KITAZAWA SHIGEO
Application Number:
JP1994000168601
Publication Date:
January 16, 1996
Filing Date:
June 29, 1994
Export Citation:
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Assignee:
KITZ CORP
International Classes:
F16K1/22; F16K51/00; (IPC1-7): F16K51/00; F16K1/22
Attorney, Agent or Firm:
小林 哲男