The QC4 quick coupling plug with LET-LOK® connection is a precision-engineered solution designed for demanding applications in aviation, gas processing, medical technology, pharmaceuticals, and laboratory environments. Manufactured from durable AISI 316 stainless steel, it ensures exceptional resistance to corrosion and long-term reliability even under extreme conditions. Each unit undergoes rigorous factory testing at 68 bar to guarantee leak-free performance, while its working pressure capacity of up to 206 bar provides outstanding safety and efficiency. The plug is available in both valve and non-valve versions, offering flexibility to meet diverse system requirements. With viton sealing and an impressive operating temperature range from -26°C to +204°C, the QC4 delivers consistent performance across a wide spectrum of environments. Fully interchangeable with other Instrumentation Standard quick couplings, it allows seamless integration into existing systems, making it a versatile and cost-effective choice for professionals seeking uncompromising quality and reliability.