The quick coupling plug with external NPT thread is a lightweight yet highly durable solution designed for demanding applications in water, chemical, and pneumatic systems. Unlike traditional heavy couplings with balls and protective sleeves, its compact construction ensures ease of use and reduced strain on connected components. Equipped with a high-performance valve, it guarantees excellent flow capacity with minimal leakage, while the option without a shut-off valve provides flexibility for various installation needs. The innovative design allows slight hose rotations, effectively preventing twisting and accidental disconnection, which significantly enhances safety and reliability during operation. Manufactured from robust polysulfone and sealed with an EPDM O-ring, the coupling offers outstanding mechanical strength and exceptional resistance to chemicals, making it ideal for environments requiring durability and long service life. With a working pressure of up to 8.6 bar and an impressive operating temperature range from -40°C to +138°C, it is perfectly suited for challenging conditions, including chemical photographic processes, battery and accumulator filling systems, sprayers, pneumatic installations, and non-freezing liquid applications. Additionally, its compatibility with autoclaving ensures easy sterilization and safe use in sensitive or hygienic environments, providing a versatile and efficient connection solution for both industrial and laboratory settings.