As the space among the axle and the frame improves, the proportioning valve decreases hydraulic force, preventing rear tire lockup. Porter conventional cartridge valves are accessible with the exclusive torque guard avert system, which eliminate the stem harm cause by overtightening from the valve at shut-off. The torque guard procedure http://needle-valve43185.pointblog.net/5-Essential-Elements-For-metering-valve-27134719