Pressure differential brake valve

2019-12-05 23:09

The pressure differential valve is the device that alerts you if you have a leak in one of your brake circuits. The valve contains a specially shaped piston in the middle of a cylinder. Each side of the piston is exposed to the pressure in one of the two brake circuits. As long as the pressure in both circuits is the same, the piston will stay centered in its cylinder.If you run into a situation where your rear brakes are holding pressure after you release the brake pedal it's almost certainly because of an issue with the proportioning valve. Either the piston isn't moving properly, or the small check valve inside the piston has been damaged. pressure differential brake valve

Aug 05, 2018 The pressure differential valve was first installed on in the Bumpside trucks beginning in 1967. It warns that there's an imbalance between the front and rear brake circuits, if there's a line or brake component failure where brake fluid is lost from the system.

On nonABS vehicles, install the new valve(s) into the master cylinder and tighten to 24 ft. lbs. (31 Nm). On vehicles with ABS, install the new valve(s) to the brake line. Connect the brake pipes to the proportioning valve(s), then tighten to 11 ft. lbs. (15 Nm). If raised, carefully lower the vehicle. Pressure Differential Switch All modern vehicles are equipped with a red brake warning light. One of the purposes of this light is to inform the driver of either a fluid loss or pressure loss condition. Fluid level switches are used for fluid loss and pressure differential switches are used for sensing pressure. pressure differential brake valve Differential valves are also used to control the differential pressure across a fixed restriction such as an orifice or flow section to control the flow of a fluid. Monitoring Systems Modern automotive brakes use dual master cylinders to actuate independent front and rear braking circuits, or diagonal braking circuits.

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