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GB2210140B - A double closing non-return valve - Google Patents

A double closing non-return valve

Info

Publication number
GB2210140B
GB2210140B GB8807558A GB8807558A GB2210140B GB 2210140 B GB2210140 B GB 2210140B GB 8807558 A GB8807558 A GB 8807558A GB 8807558 A GB8807558 A GB 8807558A GB 2210140 B GB2210140 B GB 2210140B
Authority
GB
United Kingdom
Prior art keywords
return valve
double closing
closing non
double
return
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.)
Expired - Fee Related
Application number
GB8807558A
Other versions
GB2210140A (en
GB8807558D0 (en
Inventor
Michele Barberi
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.)
BARBERI ALDO
Original Assignee
BARBERI ALDO
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 BARBERI ALDO filed Critical BARBERI ALDO
Publication of GB8807558D0 publication Critical patent/GB8807558D0/en
Publication of GB2210140A publication Critical patent/GB2210140A/en
Application granted granted Critical
Publication of GB2210140B publication Critical patent/GB2210140B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
    • F16K15/066—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring with a plurality of valve members

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)
GB8807558A 1987-09-24 1988-03-30 A double closing non-return valve Expired - Fee Related GB2210140B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2241987U IT211836Z2 (en) 1987-09-24 1987-09-24 DOUBLE CLOSING CHECK VALVE WITH EXHAUSTS.

Publications (3)

Publication Number Publication Date
GB8807558D0 GB8807558D0 (en) 1988-05-05
GB2210140A GB2210140A (en) 1989-06-01
GB2210140B true GB2210140B (en) 1991-09-25

Family

ID=11196051

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8807558A Expired - Fee Related GB2210140B (en) 1987-09-24 1988-03-30 A double closing non-return valve

Country Status (2)

Country Link
GB (1) GB2210140B (en)
IT (1) IT211836Z2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104514942A (en) * 2014-07-12 2015-04-15 涂晶 Check valve device normally working on conveying pipeline for fluid with solid impurities

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4953588A (en) * 1989-08-16 1990-09-04 Mueller Co. Dual check valve
JP4269260B2 (en) * 2003-06-05 2009-05-27 三浦工業株式会社 valve
CN106224599B (en) * 2016-08-29 2018-07-10 约翰斯顿流体科技（无锡）有限公司 A kind of multistage check-valves
CN113280158A (en) * 2021-06-22 2021-08-20 深圳市山野水族用品有限公司 One-way check valve

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB292887A (en) * 1928-02-29 1928-06-28 Gottfried Bornefeld Improvements in safety cut-off valves for gas conduits
GB1386204A (en) * 1973-02-26 1975-03-05 Herion Werke Kg Non-return safety valve
US4284097A (en) * 1978-03-28 1981-08-18 Amtrol Inc. In line back flow preventer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB292887A (en) * 1928-02-29 1928-06-28 Gottfried Bornefeld Improvements in safety cut-off valves for gas conduits
GB1386204A (en) * 1973-02-26 1975-03-05 Herion Werke Kg Non-return safety valve
US4284097A (en) * 1978-03-28 1981-08-18 Amtrol Inc. In line back flow preventer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104514942A (en) * 2014-07-12 2015-04-15 涂晶 Check valve device normally working on conveying pipeline for fluid with solid impurities

Also Published As

Publication number Publication date
GB2210140A (en) 1989-06-01
IT8722419V0 (en) 1987-09-24
GB8807558D0 (en) 1988-05-05
IT211836Z2 (en) 1989-05-25

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee