Do you need adapter in order to inflate air

It depends on the type of pump that you use. Many small hand pumps, or air compressors will need an adapter. I have a bicycle pump that does both types of tubes without the need for an adapter .

How do these adaptors trigger the air release in the Schraeder tire inflator? Does it rely on the Presta valve stem?

When I screw the Presta adapters onto the valve stem, it begins to release air. You have to turn the adapter counterclockwise a couple of times so air from the pump will flow in.

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🚴‍♂️ Convert & conquer every ride with ease!

VALUE PACK OF 5 - Never get caught flat—always have spares ready for every ride or emergency.
PREMIUM ZINC ALLOY BUILD - Durable copper-plated metal ensures long-lasting performance and corrosion resistance.
SEAMLESS VALVE CONVERSION - Effortlessly switch Presta valves to Schrader for universal pump compatibility.
ULTRA COMPACT LIGHTWEIGHT - At just 9g and pocket-sized, carry all 5 adapters without bulk or weight.
VERSATILE PUMP COMPATIBILITY - Works flawlessly with both bicycle pumps and air compressors for ultimate convenience.

The Juscycling Presta to Schrader Valve Adapter pack includes 5 compact, lightweight zinc alloy converters designed to effortlessly adapt Presta valves for use with Schrader-compatible pumps and compressors. Engineered for durability and convenience, these copper-plated adapters ensure you're always ready to inflate your bike tires anywhere, anytime.

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