Infusor having fixed and variable flow rate control mechanisms
Labyrinth trim valve
Liquid flow velocity diffuser
Low frequency noise and turbulence reducer
Low noise ball valve assembly with downstream insert
Low noise level control valve
Low noise slide valve
Method and apparatus for reducing torque on an air damper
Mixer valve with hard material plaques, provided with prethrottl
Process and device for attenuating noise caused by a valve durin
Quarter turn rotatable flow control valve
Quiet appliance water valve
Quiet opening ball valve
Quieting means for a fluid flow control device using vortical fl
Quieting means for a fluid flow device
Reduced noise disk valve assembly
Regulation valve
Rotary ball fluid control valve with noise attenuator
Rotary ball valve assembly
Rotary noise attenuating valve