Pressure Regulating Valves are activated automatically by line pressure. The purpose is to open rapidly if the pressure exceeds a predetermined value and close slowly. Pressure regulating valves are designed to maintain a constant backpressure with variations in suction pressure. Pressure-regulating valves regulate fluid pressure levels to meet flow demand variations.
Pressure Regulator is a valve that automatically cuts off the flow of a liquid or gas at a certain pressure for the purpose of preventing damage to plumbing. They are used at the water inlet of recreational vehicles. The application of a pressure regulator is on a tank of oxygen used for breathing. Pressure regulator uses the outside air as a reference to the baseline pressure.
Pressure relief regulators offer fast, positive response service for air, all types of gas fuels, and inert gas applications. These can be used as bypass valves in automatic safety systems, and as high capacity relief regulators downstream of reducing regulator stations and inert gas generators.
A pressure restricting valve is a variation of the globe valve. The valve is used when the pressure range of the piping system is under 175 PSI. Under flow conditions the valve will restrict the water pressure to the required working pressure. If full system pressure is required the valve can be adjusted manually to furnish the maximum available pressure.
Pressure Roller is a combination of drive roller forms and a nip for moving the lenticular materials. It is skewed at an angle to an axis of the first drive roller. A second pressure roller forms a second nip in combination with a tensioning roller for tensioning the lenticular material. A scanner writes an image to the lenticular material (43) as it passes between the first and second nip.