Title:
PRESSURE REDUCTION VALVE
Document Type and Number:
Japanese Patent JP2016098897
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a pressure reduction valve capable of preventing generation of so-called spring noise by keeping an equilibrium state of a seat packing to a valve seat.SOLUTION: A valve element driving member 10 disposed in a pressure chamber 2b at a secondary side of a fluid passage and bringing a seat packing 20 into contact with a valve seat 5 or separating the same from the valve seat, has a valve rod 12 projecting from a piston portion 11 receiving energization force of a main spring 6 energizing to the seat packing 20, toward a primary-side valve chest 2a provided with the seat packing 20, and pressing the seat packing 20. The valve rod 12 is inserted to a communication passage 4c formed at a secondary side of the fluid passage and extending along the energizing direction of a valve spring 7. A supporting portion 14 radially projecting and kept into contact with an inner side face 4e of the communication passage 4c, is formed on a peripheral face 12b of the valve rod 12.SELECTED DRAWING: Figure 1
Inventors:
TAKAGI SHIGERU
AMAGAI NOBORU
AMAGAI NOBORU
Application Number:
JP2014235855A
Publication Date:
May 30, 2016
Filing Date:
November 20, 2014
Export Citation:
Assignee:
DAISEN KK
International Classes:
F16K17/30; F16K47/02; G05D16/10
Domestic Patent References:
| JP2013206176A | 2013-10-07 | |||
| JPH01106913U | 1989-07-19 | |||
| JPS62163122A | 1987-07-18 | |||
| JP2014115820A | 2014-06-26 | |||
| JPS571874A | 1982-01-07 |
Attorney, Agent or Firm:
Tamio Nishiwaki
Nishiwaki Reishi
Nishiwaki Reishi