The Series 6911-NWO Tee Male Adjustable ORB x Female NPSM Swivel x Female NPSM Swivel adapters are high-quality carbon steel fittings designed to provide secure, leak-free connections in hydraulic and fluid power systems. These tee adapters feature a three-way design, with a male adjustable ORB (O-Ring Boss) connection and two female NPSM (National Pipe Straight Mechanical) swivel connections. The male adjustable ORB connection ensures a reliable, leak-free seal using an O-ring, while the female NPSM swivel connections allow for easy alignment and a flexible, secure fit. The difference between NPT (National Pipe Tapered) and NPSM is that NPT threads are tapered and rely on thread deformation for sealing, while NPSM threads are straight, designed for mechanical connections without deformation. Made from durable carbon steel, the Series 6911-NWO adapters offer excellent strength and corrosion resistance, making them ideal for high-pressure fluid systems and industrial applications requiring efficient and dependable fluid routing.