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Good sealing capacity of butterfly valve 2011-12-31
The main object of the present invention is to provide a butterfly valve having good sealing capacity and not implying soft sealing element made of rubber, plastic or similar materials. More specifica
Device convenient of butterfly valve 2011-12-30
An object of the invention is to provide a butterfly valve which is arranged to facilitate removal from and replacement in a piping system without disturbing the piping system.
Butterfly valve relatively simple design 2011-12-29
One important feature of the new valve construction resides in an actuating shaft supporting structure which provides a combined shaft bearing and seal arrangement for reliably preventing the escape o
So-called butterfly valves 2011-12-28
Butterfly valves have long been used to control fluid flowing in conduits and problems relating to the general design and constructional features of such valves have been recognized. Generally butterf
Butterfly valves as utilized for controlling 2011-12-27
In butterfly valves such as are used in controlling the flow of liquids to heating systems as in autmobile heating systems, it is common to provide a body having a generally cylindrical passage, a piv
The valving member of a butterfly valve 2011-12-26
In butterfly valves, it is generally difficult to obtain a fluid-tight seal when the valve is in the closed position. The present invention satisfactorily overcomes the sealing problem by providing a
Valves of the type known as disc or butterfly valves 2011-12-23
This invention relates to valves and more particularly to valves of the type known as disc or butterfly valves. Heretofore in the art to which my invention relates, difficulties have been encountered
A valve disc and valve stem assembly in a butterfly valve 2011-12-22
As for a valve disc and valve stem assembly in a butterfly valve, two types of arrangements are known; one in which the valve disc is provided with a single diametrically extending through-hole whose
