Low-noise rotary control valve

Details Low-noise rotary control valve Low-noise rotary control valve

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 5/08 (2006.01) F16K 5/06 (2006.01) F16K 47/04 (2006.01)

Patent

CA 2145173

A low-noise rotary control valve includes a valve body (10) and a rotatable ball (12). An upwardly extending diverter (28) is positioned in the entry flow passage (15) of the ball (12). A downwardly extending diverter (30) is disposed on the leading edge of the upper half of the valve (12). The diverters (28, 30) provide a small impedance to flow when the valve is in the full open posi- tion, but provide a tortious path for fluid flow when the valve is partially closed. The tortious path inhibits vortex formation re- sulting in reduced noise and vibration. A third impediment (32) in the outflow passage (16) extends upwardly from the valve and inhibit vortex formation downstream of the valve.

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