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.)
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.)
Lleal SA
Original Assignee
Lleal SA
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 Lleal SAfiledCriticalLleal SA
Priority to ES300468ApriorityCriticalpatent/ES300468A1/en
Publication of ES300468A1publicationCriticalpatent/ES300468A1/en
Improvements in the construction of butterfly valves, of the type of which comprise a body consisting of a single piece completely solid between plates, close face to face, and having carried out in two diametrically opposed zones two housings of the shaft of the butterfly, provided, respectively, with a stuffing box and with a sealing lid, characterized in that said butterfly is provided in all its outline with two peripheral races in which are fitted corresponding extensible metal rings adapted to be applied, in the closed position of the valve, against the inner bore surface of the body of the same and thereby ensure a totally tight seal. (Machine-translation by Google Translate, not legally binding)
ES300468A1964-05-231964-05-23Improvements in the construction of mariposa valves (Machine-translation by Google Translate, not legally binding)
ExpiredES300468A1
(en)