Pressure controls, commonly known as pressure reduction valves, hold output pressure constant in compressed-air systems until input pressures or output flow changes.
Throughout compressed-air systems, pressures are kept constant input pressure, commonly known as pressure reducing valves, irrespective of input pressure or outflow variations. Regulators are an integral loading, sensing, actuating and control elements in a special class of valves. They can be commonly categorized as general purpose, special purpose or precision, available in many Festo Frl Unit configurations.
The general purpose or utility regulators are flow and control equipment meeting the requirements in most industrial compressed air applications. This Festo Pressure Regulator offers a long service life at competitive prices and relatively easy maintenance. Precision regulators are for use where near tolerances are necessary to monitor the controlled pressure. These regulators are used when the results of a test depend on accurate pressure control. These regulators are used.
A special configuration or material for use with non-air compressed fluids is usually provided to different regulators. Depending on the intended implementation and performance criteria, regulatory structure can vary from easy to complex.
Both designs are based on the operation theory and loading, actuating and regulating components. Some regulators regulate the downstream pressure using simple wire coil springs. Different springs are used to allow secondary pressure to be controlled within certain areas. In the middle, one third of the rated outlet pressure range should ideally be the required pressure. The spring loses sensitivity on the bottom of the pressure range; on the high end, its maximum capacity is approached by the spring.
In order to feel downstream pressure, controls may use the piston or diaphragm. Usually Diaphragms are more responsive and respond more rapidly to pressure changes. You should use it if sensitive pressure settings (less than 0.04 psi) are required. On the other hand, pistons are usually more durable and provide a powerful sensing zone in one specific size unit. The functional difference between accuracy and generic regulators is the degree to which the output pressure is controlled accurately. The precision of the output pressure is determined by the drop due to flow changes.
When the valve first opens, the pressure drop is most pronounced. The factors contributing to the decrease are: spring comprehensive load adjustment, efficient diaphragm displacement area shift and imbalance of the valve surface forces. The varying supply pressure sum is referred to as a regulatory factor, and the diaphragm / valve area ratios as well as the valve imbalance are calculated.
The main factors to consider when choosing a pressure regulator are:
Normal line pressure.
Minimum and maximum regulated pressure: regulators can have a wide range of fittings to meet the requirements, and they may need a specific spring or accessory. In the intermediate third of the regulator spectrum, minimum and maximum pressure also must be given.
Maximum flow required at regulated pressure.
Piping size: not all control systems can be used in all piping sizes; notice the need for adapters. Pipe size should also be compatible with the needs for flow.
Regulator frequency of adjustment: several different methods of adjustment are possible. Consider the location, procedure, method of adjustment, and user when selecting a regulator.
Pressure accuracy degree required.
Included are adapters or options for panel mounting.
Conditions that may be incompatible with products used in a device, environmental or fluid.
Special characteristics such as high relief or central.
The effect of a malfunction or failure of the regulator: a damper or valve for the safety of staff or equipment may be required.