IT1029497B - Perfluordalchiltioglicoli e procedimento per produrli valvola di intercettazione di sicurezza - Google Patents

Perfluordalchiltioglicoli e procedimento per produrli valvola di intercettazione di sicurezza

Info

Publication number
IT1029497B
IT1029497B IT4804475A IT4804475A IT1029497B IT 1029497 B IT1029497 B IT 1029497B IT 4804475 A IT4804475 A IT 4804475A IT 4804475 A IT4804475 A IT 4804475A IT 1029497 B IT1029497 B IT 1029497B
Authority
IT
Italy
Prior art keywords
valve
fire
fail safe
destroyed
elastomer seals
Prior art date
Application number
IT4804475A
Other languages
English (en)
Original Assignee
Ciba Geigy Ag
Willis Oil Tool Co
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
Priority claimed from US05/439,497 external-priority patent/US3935277A/en
Priority claimed from US05/440,125 external-priority patent/US3958592A/en
Application filed by Ciba Geigy Ag, Willis Oil Tool Co filed Critical Ciba Geigy Ag
Application granted granted Critical
Publication of IT1029497B publication Critical patent/IT1029497B/it

Links

Landscapes

  • Safety Valves (AREA)
IT4804475A 1974-02-04 1975-02-06 Perfluordalchiltioglicoli e procedimento per produrli valvola di intercettazione di sicurezza IT1029497B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/439,497 US3935277A (en) 1974-02-04 1974-02-04 New Rf -glycols containing two perfluoroalkylthio groups and useful compositions therefrom
US05/440,125 US3958592A (en) 1974-02-06 1974-02-06 Safety shut-off valve

Publications (1)

Publication Number Publication Date
IT1029497B true IT1029497B (it) 1979-03-10

Family

ID=27032061

Family Applications (1)

Application Number Title Priority Date Filing Date
IT4804475A IT1029497B (it) 1974-02-04 1975-02-06 Perfluordalchiltioglicoli e procedimento per produrli valvola di intercettazione di sicurezza

Country Status (1)

Country Link
IT (1) IT1029497B (it)

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