Pressure regulators are used in pneumatic applications to set and keep the pressure level of a machine constant. In many applications, the pressure of compressors, which supply compressed air in the range of 10...16 bar, is too high, so it has to be reduced with the help of pressure regulators. Excessive pressure leads to higher wear of the application or unnecessarily high energy costs, while with insufficient pressure the required speed or force performance is not reached. This results in fluctuations in quality and faulty results.
The incoming compressed air that flows from the input of the pressure regulator to the valve seat is the primary pressure or input pressure. The pressure regulator ensures that the compressed air, as it flows through the valve, is at the required secondary pressure, also called output pressure. This is regulated in line with the specific requirements by adjusting the rotary knob. When the rotary knob is turned, this moves a spring that exerts a force on the upper side of the regulating diaphragm, which in turn pushes up or down. The valve tappet is actuated and the valve bore opens. When the secondary pressure drops, the spring force on the diaphragm is greater than the counteracting output pressure. This pushes the valve tappet further down, which increases the valve opening and causes the output pressure to rise again.
Our new MS-B series features the second-generation pressure regulator MS-LR-B, which is our attractively priced, technical polymer series. It has a grid dimension of 25, 40 or 62 mm and is easy to operate thanks to the modern polymer materials. The air pressure is regulated and locked by a rotary knob, while integrated primary and secondary exhausting with reverse flow behaviour ensures stable control behaviour. Pressure regulator MS-LR-B is available with pressure gauge or G1/8 adapter ("A8").
Our "one MS worldwide" offers a wide range of pressure regulators. From an integrated return flow function and secondary exhausting as standard to high flow rate performance and very good control characteristics, the MS series offers the right product for every application. It is available in four sizes, with mechanical pressure gauge or alternatively with pressure sensor with and without display. In addition, all pressure regulators in the MS series can be installed in service unit combinations thanks to the simple modular system of the MS series. The pressure regulators can also be configured for use in potentially explosive areas of zones 1, 2, 21 and 22 as well as with UL approval.
The D series includes the pressure regulator LR-DB with the following pressure range: 7 bar output pressure and 10 bar input pressure. Another characteristic is the high flow rate performance with good pressure stability. It is available in one size with a flow rate of up to approx. 1,300 l/min.
无论哪个产品系列，Festo 都支持为敏感应用场合提供单个设备。比如，如果需要 0.02 bar 的压力滞后，那么精准调压阀 LRP 和 LRPS 就是合适之选。这两款产品都能在静态和动态应用中实现精确的压力调节， 对工作压力波动进行补偿。两款调压阀提供两种规格供选择：一种为 40 mm 规格，采用 ⅛" 连接螺纹，标准额定流量为 300 l/min；另外一种为 50 mm 规格，采用 ¼" 连接螺纹，标准额定流量为 2,300 l/min。
电控减压阀 PREL尤其适合调压范围不超过 40 bar 的高压应用场合。电控减压阀 PREL的输出压力由比例压力阀 VPPL通过集成式压力传感器进行测定，然后在内部与设定值进行对比。如果出现偏差，VPPL 会控制 PREL 的控制器，直至输出压力达到设定值为止。增压功能是 PREL 的标配集成功能。此外，调压阀正面和背面设有压力表接口。