The HQ WSC quick coupling plug with screw-on connection and integrated valve with internal NPT thread is designed for reliable use in demanding hydraulic vehicle systems. Its robust brass body guarantees long-lasting durability and resistance to harsh weather conditions, while the advanced valve construction minimizes fluid loss and prevents air penetration during coupling and uncoupling. The plug sleeve, made of galvanized steel and equipped with practical butterfly handles, enables fast, effortless connection and disconnection without the need for additional tools, even under residual static pressure up to 50 bar. High-quality NBR sealing ensures secure tightness across a wide temperature range from -40°C to +106°C, making the coupling suitable for extreme operating environments. With a working pressure capacity of up to 210 bar, depending on size, and optimized flow performance measured at a 3 bar pressure drop, this quick coupling plug delivers efficiency, safety, and convenience. It is the ideal solution for professionals seeking a reliable, easy-to-use component that enhances system performance and minimizes downtime.