In the receiver, where liquid and vapor are present, the refrigerant always will be at a saturated condition. (For example, R-404A is 78 degrees at 170 psig.) ... Pressure regulating valves can ...

Figure 1 shows a head pressure control valve for low ambient conditions. Notice that the valve has a round pressurized dome at its top, which is charged with a proprietary charge from the manufacturer ...

This can only be done if the vapor pressure is in a vacuum and if the particular fluid tolerates air inclusion. Figure 1. A butterfly valve reduces cavitation by utilizing air sucked in by the liquid ...

This makes for a high-capacity, precision-control valve suitable for high-pressure-drop, erosive flow that resists damage from cavitation. Continue Reading.

A microfluidic valve that amplifies the pressure in a fluid channel enables the realization of static microfluidic digital control logic. This in turn could enable more versatility and integration ...

Heavy-haul freight trains require fully charged brakes. When operating a train on a downgrade, brake usage levels on individual cars climb, equipment heats up, and braking power levels can drop ...