Title:
PRESSURE REGULATING VALVE
Document Type and Number:
Japanese Patent JP2015022696
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To significantly improve stability of water pressure control operation, and to simplify and compactify a whole configuration.SOLUTION: In a valve nipple 50, a valve seat 59 formed at a tip of an insertion part I is arranged in a secondary side position inside a valve body 10. A piston 20 has a double peripheral wall-shaped sliding part H, and accommodates a press spring 40 in an accommodation space 21a between an outer peripheral wall 21 and an inner peripheral wall 22, and thus the press spring 40 is interposed between the piston 20 and the valve nipple 50. The wall thickness t2 of the inner peripheral wall 22 is set to be larger than the wall thickness t1 of the outer peripheral wall 21. In the piston 20, a seating part 31 is arranged in a position, which is on a further secondary side than a connection wall 23 of the sliding part H and is separated from the valve seat 59 to the secondary side. The piston 20 receives a back pressure of pressurized water from a secondary side opening of the valve body 10 and makes the seating part 31 approach the valve seat 59 against pressing energization force of the press spring 40.
Inventors:
HAYAKAWA TORU
YANO KENJI
FUJII YUICHIRO
YANO KENJI
FUJII YUICHIRO
Application Number:
JP2013152663A
Publication Date:
February 02, 2015
Filing Date:
July 23, 2013
Export Citation:
Assignee:
MIZSEI MFG CO LTD
International Classes:
G05D16/10; A47K3/28; F16K47/02
Domestic Patent References:
| JPH10118533A | 1998-05-12 | |||
| JP2002055721A | 2002-02-20 | |||
| JP2001137145A | 2001-05-22 | |||
| JP2002039489A | 2002-02-06 | |||
| JP2002213644A | 2002-07-31 | |||
| JP2004176873A | 2004-06-24 | |||
| JP2011153684A | 2011-08-11 | |||
| JP2013224701A | 2013-10-31 |
Attorney, Agent or Firm:
10, 000 rice fields Masayuki