Title:
VENT VALVE
Document Type and Number:
Japanese Patent JP2021162075
Kind Code:
A
Abstract:
To provide a vent valve for a low set point which suppresses entry of dust inside a valve without damaging drainage performance and is excellent in reliability and durability.SOLUTION: In a vent valve 1, when a secondary side of a valve body 16 has negative pressure, the valve body 16 is in an open state and the air can be taken in from a primary side to a secondary side. An air vent restrictor member 15 is provided for the primary side of the valve body. An air vent area of a ventilation part 67 provided for the air vent restrictor member 15 is set smaller than an air vent area of the vent valve itself within the range that drainage performance does not decrease in comparison with the case that the air vent restrictor member 15 is not provided.SELECTED DRAWING: Figure 1
Inventors:
YOKOZAWA NAOSUMI
Application Number:
JP2020063409A
Publication Date:
October 11, 2021
Filing Date:
March 31, 2020
Export Citation:
Assignee:
KITZ CORP
International Classes:
F16K24/06; F16K51/00
Attorney, Agent or Firm:
Tetsuo Kobayashi