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A valve comprising a valve body (10) having inlet (140 and outlet (18) passages communicating with a valve chamber (15). A valve element (90) is movable through the valve chamber adjacent a valve seat (92) and a flow deflector ring (104) having a central opening which has discontinuous deflector sur

A valve comprising a valve body (10) having inlet (140 and outlet (18) passages communicating with a valve chamber (15). A valve element (90) is movable through the valve chamber adjacent a valve seat (92) and a flow deflector ring (104) having a central opening which has discontinuous deflector surfaces (106) around a central opening separated by spaced grooves (108) arranger to disrupt flow a stream of fluid flowing between the valve element and the valve seat to prevent the formation of a vena contracta downstream from the valve seat. A plurality of sleeves (34,36) having cylindrical walls divide the valve chamber to form an entrance section (15a) and an outlet section (15b). An array of inlet bores (38) is formed in an outer sleeve (34) and an array of exit bores (40) is formed in an inner sleeve (36), each of the bores having an a receiving end and a discharge end, receiving ends of bores in the array of outlet bores being spaced axially of the valve chamber relative to discharge ends of bores in the array of inlet bores. Bores in the array of inlet bores are inclined relative to bores of the array of exit bores to form a tortuous flow path from the inlet section through a plurality of axially spaced plenums (44,46,48) to the outlet section (15b) of the valve chamber (15) to minimize noise and cavitation as pressure is reduced in the valve chamber.

대표청구항 ▼

A valve comprising: a valve body having inlet and outlet passages communicating with a valve chamber; flow control means in said chamber, said flow control means being adapted to form an entrance section and an outlet section in valve chamber said flow control means having an annular plenum formed t

A valve comprising: a valve body having inlet and outlet passages communicating with a valve chamber; flow control means in said chamber, said flow control means being adapted to form an entrance section and an outlet section in valve chamber said flow control means having an annular plenum formed therein with an array of inlet bores in fluid communication with said entrance section of said valve chamber and said plenum and an array of exit bores in fluid communication with said plenum and said outlet section of said valve chamber, said inlet bores and said outlet bores being arranged and configured to form a tortuous flow path from said inlet section to said outlet section of said valve chamber; said flow control means comprising sleeve means, said plenum being formed in said sleeve means and bores in said array of inlet bores being inclined relative to bores of said array of exit bores to form said tortuous flow path from said inlet section to said outlet section of said valve chamber and valve means in said valve chamber adapted to control flow of fluid from said outlet section of said valve chamber to said outlet passage in said valve body.