JPS57177467A - Check valve - Google Patents

Check valve

Info

Publication number
JPS57177467A
JPS57177467A JP6132881A JP6132881A JPS57177467A JP S57177467 A JPS57177467 A JP S57177467A JP 6132881 A JP6132881 A JP 6132881A JP 6132881 A JP6132881 A JP 6132881A JP S57177467 A JPS57177467 A JP S57177467A
Authority
JP
Japan
Prior art keywords
valve
check valve
mingled
constitution
ring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP6132881A
Other languages
Japanese (ja)
Inventor
Yoshinobu Fujiwara
Hiroshi Umetsu
Mitsuo Mitsuma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP6132881A priority Critical patent/JPS57177467A/en
Publication of JPS57177467A publication Critical patent/JPS57177467A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/04—Check valves with guided rigid valve members shaped as balls
    • F16K15/044—Check valves with guided rigid valve members shaped as balls spring-loaded

Abstract

PURPOSE:To obtain a delivery valve which operates stably even when impurities are mingled by producing a valve plug from a rigid ball and a valve seat from a O ring-like elastic member and providing two pairs of them in series in a check valve suitable for a fixed displacement suction and exhaust unit, etc. of a biochemistry automatic analysis device. CONSTITUTION:Caps 18a, 18b are fitted to the left and right sides of a shell 17 made of ''DAIFURON'' . Valve plugs 21a, 21b are made of rigid balls of ceramic with high hardness, and are pressed to elastic O ring-like valve seats 19a, 19b by platinum springs 20a, 20b. According to this constitution, it performs an excellent function as a check valve for a long time with little liquid leakage even though some dusts might by mingled in the fluid.
JP6132881A 1981-04-24 1981-04-24 Check valve Pending JPS57177467A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6132881A JPS57177467A (en) 1981-04-24 1981-04-24 Check valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6132881A JPS57177467A (en) 1981-04-24 1981-04-24 Check valve

Publications (1)

Publication Number Publication Date
JPS57177467A true JPS57177467A (en) 1982-11-01

Family

ID=13167955

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6132881A Pending JPS57177467A (en) 1981-04-24 1981-04-24 Check valve

Country Status (1)

Country Link
JP (1) JPS57177467A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0341283U (en) * 1989-08-31 1991-04-19
JPH0810032B2 (en) * 1986-04-12 1996-01-31 シユタイン，ギユンター Check valve
KR100316788B1 (en) * 1999-07-08 2001-12-12 이상만 Dual check valve
KR200447182Y1 (en) * 2009-03-06 2010-01-06 박춘웅 2 Step Check Valve with Seperating Socket
JP2017172570A (en) * 2016-03-25 2017-09-28 株式会社ケーヒン Fuel supply device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0810032B2 (en) * 1986-04-12 1996-01-31 シユタイン，ギユンター Check valve
JPH0341283U (en) * 1989-08-31 1991-04-19
KR100316788B1 (en) * 1999-07-08 2001-12-12 이상만 Dual check valve
KR200447182Y1 (en) * 2009-03-06 2010-01-06 박춘웅 2 Step Check Valve with Seperating Socket
JP2017172570A (en) * 2016-03-25 2017-09-28 株式会社ケーヒン Fuel supply device
WO2017163835A1 (en) * 2016-03-25 2017-09-28 株式会社ケーヒン Fuel supply device

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