The QC4 quick coupling socket with integrated valve and LET-LOK® connection is a precision-engineered solution designed for demanding applications in aviation, gas systems, medical technology, pharmaceuticals, and laboratories. Manufactured from durable AISI 316 stainless steel, it ensures long-lasting performance even in harsh environments. Each unit undergoes rigorous factory testing at 68 bar to guarantee leak-tight reliability, while its working pressure capacity of up to 206 bar provides exceptional safety and efficiency. Equipped with viton sealing and an impressive operating temperature range from -26°C to +204°C, the QC4 delivers consistent performance across diverse conditions. Fully interchangeable with other Instrumentation standard quick couplings, it offers maximum flexibility and compatibility, making it the ideal choice for professionals who require uncompromising quality, reliability, and ease of integration in critical systems.