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Title:
DISK TYPE STEAM TRAP
Document Type and Number:
Japanese Patent JP2011064227
Kind Code:
A
Abstract:

To ensure close fitting of a valve disk to an inner ring valve seat and an outer ring valve seat.

A lid body 2 is fixed to a body 1 having an inlet 4 and an outlet 5 to form a pressure changing chamber 3. A blowout port opened to the center of the pressure changing chamber 3 is provided to allow the inlet 4 to communicate with the pressure changing chamber 3. An annular groove 8 is provided to be opened to the outer circumference of the blowout port 6, an inner ring valve seat 9 is formed between the blowout port 6 and the annular groove 8, and an outer ring valve seat 10 is formed on the outer circumference of the annular groove 8. A discharge port 7 from the annular groove 8 is provided to allow the pressure changing chamber 3 to communicate with the outlet 5. A valve disk 11 is disposed in the pressure changing chamber 3. One end of a bellows 12 is fixed to the outer ring valve seat 10, and a movable outer ring valve seat 13 forming the annular groove 8 is fixed to the other end of the bellows 12, so that the movable outer ring valve seat 13 can be displaced below the inner ring valve seat 9. A stopper member 14 is provided inside the bellows 12 to extend from the outer ring valve seat 10 to the movable outer ring valve seat 13, and when the movable outer ring valve seat 13 is displaced below the inner ring valve seat 9 by a predetermined degree or more, the movable outer ring valve seat 13 abuts on the stopper member.


Inventors:
ASADA TETSUO
Application Number:
JP2009213745A
Publication Date:
March 31, 2011
Filing Date:
September 15, 2009
Export Citation:
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Assignee:
TLV CO LTD
International Classes:
F16T1/14; F16T1/16
Domestic Patent References:
JP2002310393A2002-10-23
JPS5012309U1975-02-07
JPS5789064U1982-06-01
JPH0662299U1994-09-02
JP2002213692A2002-07-31
JP2006170319A2006-06-29
JP2002310393A2002-10-23
JPS5012309U1975-02-07
JPS5789064U1982-06-01
JPH0662299U1994-09-02
JP2010286106A2010-12-24



 
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