Fluid Line Products, Inc. has released what it calls the Anti Blocker, a device designed to protect sensitive or expensive control mechanisms in hydraulic operating systems. A steel mesh filter element is available in standard 50 and 120 micron ratings. The filter element can be both cleaned and replaced during maintenance operations. Both the working pressure and collapse pressure range from 0 to 6000 psi (0 to 414 bar), with a temperature range of 40 to 250°F (4.4 to 121°C).