MS-LFR Series Filter Regulators A combined pressure regulator and filter from Festo. The MS4 and MS6 pneumatic filter regulators remove contaminates from compressed air down to a particle size of 5 μm or 40 μm (dependent on filter cartridge). Available in pressure ranges 0.3 bar to 7 bar and 0.5 bar to 12 bar, the MS series filter regulators have a high flow rate and integrated return flow for exhausting air from port 2 to port 1. Available with G1/8 or G1/4 ports. Features and Benefits Constant output pressure with return flow Choice of fully auomatic or manual drain Plastic or fully intergrated metal bowel guard Can be fitted with analogue pressure gauge or sensoro with LCD display Rotary knob with detent can be locked to prevent setting changes Regulators and Filter Regulators