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  2. Relay valve - Wikipedia

    en.wikipedia.org/wiki/Relay_valve

    A relay valve is an air-operated valve typically used in air brake systems to remotely control the brakes at the rear of a heavy truck or semi-trailer in a tractor-trailer combination. Relay valves are necessary in heavy trucks in order to speed-up rear-brake application and release, since air takes longer to travel to the rear of the vehicle ...

  3. Haldex (company) - Wikipedia

    en.wikipedia.org/wiki/Haldex_(company)

    Haldex AB (originally Halda Fickurfabrik AB, then Svenska AB Bromsregulatorer, SAB), also known as Haldex Group, is a Swedish company operating in the commercial vehicle industry. Haldex focuses on brake products, air suspension systems and products to enhance safety for heavy vehicles.

  4. Air brake (road vehicle) - Wikipedia

    en.wikipedia.org/wiki/Air_brake_(road_vehicle)

    Truck air-actuated disc brake. An air brake or, more formally, a compressed-air-brake system, is a type of friction brake for vehicles in which compressed air pressing on a piston is used to both release the parking/emergency brakes in order to move the vehicle, and also to apply pressure to the brake pads or brake shoes to slow and stop the vehicle.

  5. Electronically controlled pneumatic brakes - Wikipedia

    en.wikipedia.org/wiki/Electronically_controlled...

    When the brake pipe and car components are charged with air, the brakes release. When the engineer needs to make a brake application, control valves in the locomotive reduce the brake pipe pressure. As the brake pipe pressure is reduced, the service portions on each car divert air from their reservoirs to their brake cylinders.

  6. Railway air brake - Wikipedia

    en.wikipedia.org/wiki/Railway_air_brake

    A comparatively simple brake linkage. In the air brake's simplest form, called the straight air system, compressed air pushes on a piston in a cylinder. The piston is connected through mechanical linkage to brake shoes that can rub on the train wheels, using the resulting friction to slow the train.

  7. What to know about after-Christmas sales from Amazon ... - AOL

    www.aol.com/news/know-christmas-sales-amazon...

    The online retail giant is holding a winter sale, offering up to 40% off on products including vacuum cleaners, cordless drills and air fryers. Best Buy after Christmas sales

  8. Hydropneumatic suspension - Wikipedia

    en.wikipedia.org/wiki/Hydropneumatic_suspension

    The other plastic/rubber parts are return tubes from valves such as the brake control or height corrector valves, also catching seeping fluid around the suspension push-rods. Height corrector, brake master valve and steering valve spools, and hydraulic pump pistons have extremely small clearances (1–3 micrometres) within their cylinders ...

  9. Vet-Approved Home Treatment for Senior Dogs with Arthritis - AOL

    www.aol.com/vet-approved-home-treatment-senior...

    This problem can only be diagnosed if all the other problems that cause similar symptoms are ruled out (1), so just limping and walking on the top of the feet could be caused by something else on ...