VÁLVULAS SCHRADER

The main difference between Schrader and Presta valves is their design and application:

• Schrader valves are wider, have a spring-loaded core, and are used in cars, trucks, motorcycles, and air systems. They require a standard pump and are more durable.
• Presta valves are narrower, use a manual lock nut instead of a spring, and are common on bicycles. They require a specialized pump or an adapter for inflation.

Schrader valves are stronger and easier to use, while Presta valves are lighter and designed for high-performance bicycle tires.

To inflate a Schrader valve, follow these steps:

1. Remove the valve cap to expose the valve core.
2. Attach an air pump, compressor, or inflator with a Schrader-compatible fitting.
3. Press the nozzle firmly onto the valve to create an airtight seal.
4. Pump air into the valve until the desired pressure is reached.
5. Remove the pump nozzle quickly to prevent air loss, then replace the valve cap.

Most gas stations, air compressors, and standard tire inflators are equipped to work with Schrader valves.

A Schrader valve on a compression tester is a one-way check valve used in engine compression testing tools. It allows air to flow into the pressure gauge but prevents it from escaping, ensuring an accurate reading of cylinder pressure.

Compression testers use Schrader valves to maintain pressure after each engine cycle, helping diagnose issues such as piston ring wear, valve leaks, or head gasket failures.