OTR-Ventilkern

Air conditioner valves need good seal materials to work well. Rubber is the main material for valve cores. Choosing the right rubber material can make valves stable under different temperature, pressure, and environment conditions.

The JRA 2009-1991 standard from the Japan Refrigeration and Air Conditioning Industry Association gives a clear guideline for charging valves in car air conditioners. This standard provides a full framework to make sure valves meet quality and safety requirements. Following this specification helps manufacturers produce reliable valve components.

The Automechanika Shanghai 2025 show was successfully held at the National Exhibition and Convention Center in Shanghai from November 26 to 29, 2025. As one of the most important events in the global automotive aftermarket, the exhibition gathered strong attention from industry professionals around the world. This year’s Frankfurt show (Automechanika Shanghai) reached a record scale.

Valve cores are small parts inside a tire valve, but they are very important for tire safety and proper inflation. Over the years, three main types of valve cores have become common worldwide: the American valve core, the Presta valve core, and the German (Dunlop/Woods) valve core. Each type is different in size, sealing method, and pressure limit, so different vehicles use different valve cores to match their needs.

The 2025 China International Automotive Air-conditioning & Refrigeration Exhibition (CIAAR 2025) brought together leading manufacturers, solution providers, and global buyers from the automotive HVAC and safety equipment sectors. As one of the most influential industry exhibitions in Asia, CIAAR showcased the newest technologies in thermal management, smart components, sealing systems, and high-performance materials.

A green valve core refers to a valve core manufactured using low-lead, eco-friendly materials and fully compliant with international environmental standards such as ROHS and REACH.

Air leakage in a tire is a common problem that can affect driving safety. Even small changes in the valve core structure or assembly may cause slow air loss during daily use. Based on after-sales checks and process tracking, several major reasons for tire leakage have been identified, each with clear improvements.

A valve core is a small one-way part that lets air enter a tire and stops air from leaking out. Common types include American (Schrader), French (Presta), German, and British valve core, with the American type being the most widely used. Most valve cores are made of copper and have several parts that work together to give strong sealing performance. Besides tire use, valve cores are also applied in many other fields, such as nitrogen gas springs, accumulators, gas valves, fire extinguishers, and life jackets.

We attended Wuhan Automotive Exhibition during 10th-Oct-2025 to 13th-Oct-2025

Though small, the valve core is a critical "gatekeeper" for pressure containment, where its airtightness, reliability, and durability are paramount. Shandong Tontron Precision Technology regards quality as its lifeline, establishing a comprehensive and stringent quality assurance system spanning from raw materials to finished products. To guarantee the quality of its eco-friendly valve cores exported to the EU, Tontron has established a dedicated, segregated processing area for their semi-finished components, preventing contamination from the source. The copper materials used are sourced from renowned listed suppliers, carefully selected to balance cold heading toughness with machining hardness.