IT211836Z2 - Valvola di ritegno a doppia chiusura con scarichi. - Google Patents

Valvola di ritegno a doppia chiusura con scarichi.

Info

Publication number
IT211836Z2
IT211836Z2 IT2241987U IT2241987U IT211836Z2 IT 211836 Z2 IT211836 Z2 IT 211836Z2 IT 2241987 U IT2241987 U IT 2241987U IT 2241987 U IT2241987 U IT 2241987U IT 211836 Z2 IT211836 Z2 IT 211836Z2
Authority
IT
Italy
Prior art keywords
exhausts
check valve
closing check
double closing
double
Prior art date
Application number
IT2241987U
Other languages
English (en)
Other versions
IT8722419V0 (it
Original Assignee
Barbieri Aldo E Figli S N C
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 Barbieri Aldo E Figli S N C filed Critical Barbieri Aldo E Figli S N C
Priority to IT2241987U priority Critical patent/IT211836Z2/it
Publication of IT8722419V0 publication Critical patent/IT8722419V0/it
Priority to GB8807558A priority patent/GB2210140B/en
Application granted granted Critical
Publication of IT211836Z2 publication Critical patent/IT211836Z2/it

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)
IT2241987U 1987-09-24 1987-09-24 Valvola di ritegno a doppia chiusura con scarichi. IT211836Z2 (it)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IT2241987U IT211836Z2 (it) 1987-09-24 1987-09-24 Valvola di ritegno a doppia chiusura con scarichi.
GB8807558A GB2210140B (en) 1987-09-24 1988-03-30 A double closing non-return valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2241987U IT211836Z2 (it) 1987-09-24 1987-09-24 Valvola di ritegno a doppia chiusura con scarichi.

Publications (2)

Publication Number Publication Date
IT8722419V0 IT8722419V0 (it) 1987-09-24
IT211836Z2 true IT211836Z2 (it) 1989-05-25

Family

ID=11196051

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2241987U IT211836Z2 (it) 1987-09-24 1987-09-24 Valvola di ritegno a doppia chiusura con scarichi.

Country Status (2)

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

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 (ja) * 2003-06-05 2009-05-27 三浦工業株式会社 バルブ
CN104514942A (zh) * 2014-07-12 2015-04-15 涂晶 在含固体杂质的流体输送管路上正常工作的止回阀装置
CN106224599B (zh) * 2016-08-29 2018-07-10 约翰斯顿流体科技（无锡）有限公司 一种多级止回阀

Family Cites Families (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
DE2309552A1 (de) * 1973-02-26 1974-09-05 Herion Werke Kg Sicherheitsrueckschlagventil
US4284097A (en) * 1978-03-28 1981-08-18 Amtrol Inc. In line back flow preventer

Also Published As

Publication number Publication date
GB8807558D0 (en) 1988-05-05
IT8722419V0 (it) 1987-09-24
GB2210140B (en) 1991-09-25
GB2210140A (en) 1989-06-01

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