Dual Speed Fluid Control Apparatus.
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
A dual speed fluid control apparatus is provided which includes a valve body having a high pressure passageway and a low pressure passageway extending vertically therethrough in a spaced apart relationship. The valve body has the following an ambient pressure inlet into the top plenum, a fluid bypass outlet into the middle plenum, and a pressurized fluid inlet and fluid outlet into the bottom plenum. A valve is located within each passageway and is responsive to pressure in the bottom plenum for bypassing fluid from the bottom plenum to the middle plenum. A spring biased device is located in each passageway and is responsive to the ambient pressure in the top plenum for pushing each valve toward the closed position against the pressure in the bottom plenum. A control valve device is provided for selectively opening and closing the bottom portion of the low pressure passage way to the bottom plenum. With this arrangement the fluid control apparatus will supply high pressure fluid when the control valve means is closed and will supply low pressure fluid when the control valve means is open, both of these pressures and flow rates being varied by the magnitude of the ambient pressure in the top plenum. Author
- Pumps, Filters, Pipes, Tubing, Fittings and Valves