Whether it's a truck, bus or RV, heavy-duty vehicles rely on high-quality parts for dependability and performance. Gates Global Low-Pressure (GLP) Couplings have been engineered, designed and tested to meet the unique needs of these applications. The one-piece design of the GLP coupling ensures that port-to-port connections remain tight and leak-free. Plus, it can handle the weight of heavy-duty applications thanks to its sturdy construction - all steel or a brass stem and nut with a steel ferrule.