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Metering valves are used in the automotive industry, it is a necessary part on autos that have disc brakes on the front wheels and drum brakes on the rear wheels.
1902
Disc brakes have been used just about as long as there have been cars. The disc brake was patented by Frederick William Lanchester in England 1902.
the batmobile
drum brake and disc brakes
A disc brake kit is used to convert an older automobile's drum brakes to disc brakes. Your 2001 Gallant already has disc brakes. It would not require the disc conversion kit. When you begin to hear your brakes squeaking it is time to take your car to the repair shop for new brake pads.
No, they are inferior to disc brakes. Drum brakes were used from the beginning of the auto up until the late 60s. Drum brakes are more prone to overheating than disc brakes. Disc brakes also shed water much better than drum brakes which improves stopping distance in wet conditions. Disc brakes apply pressure more evenly than drum brakes thus improving stopping distance. Disc brakes are superior in every way.
Five advantages of disc brakes include that they are more reliable, more stable working, can be used on a variety of vehicles, are self adjusting, and the pads are next to the spinning rotor. Disc brakes are often chosen over drum brakes.
All modern mass-produced cars and light trucks DO have hydraulic brakes on the front and the rear wheels. Heavy trucks generally have air brakes on all the wheels. Maybe you are thinking of cars that have disk brakes on the front and drum brakes on the rear? On cars, these are both hydraulically operated using the same hydraulic (brake) fluid. In normal stopping situations, the front brakes do more work than the rear brakes. Maybe 70 or 80% of the braking is done by the front wheels (it depends on where the weight is in the car and how fast you stop). Disk brakes are a somewhat better brake for a car, but drum brakes are a little cheaper to manufacture. So, disk brakes are almost always used on the front wheels where the braking is more important. Drum brakes are used on the back of some cars to save money. Note that performance cars (sports cars) almost always have disk brakes on all of the wheels.
There are six components of a car brake. It starts with the pedal that the driver presses. Most of the other parts (combo valve, booster, master cylinder) are meant to transmit the action into force, until finally the wheels are reached. Here, drum brakes and disc brakes are used to apply force to the wheels and force them to stop turning.
disc brakes are usually used on the front of a car is because the braking ratio for any Car is 70 / 30 ........70 percent of the braking power goes to the front 30 percent goes to the back also if you had disc brakes on the rear of the Car and you slam on (emergency stop) the brakes would lock and you would slide all over the road
brakes create heat when used, this heat is disipated through the metal of the brakes, suspension and wheels