The Parker cross is a stainless steel 316 cross-shaped pipe fitting with four National Pipe Taper (NPT) female ends for connecting and branching a total of four pieces of pipe. All four connections have NPT threads for creating tighter seals than straight threads. Made from stainless steel 316, it is higher strength and has greater corrosion resistance than stainless steel 304. This fitting meets standards ANSI B31.1 and B1.20.1 for quality assurance. Pipe fittings are components used for connecting, terminating, controlling flow, and changing the direction of piping in many different industries. When purchasing pipe fittings, consider the application, as this will affect material type, shape, size and required durability. Fittings are available threaded or unthreaded, in many shapes, styles, sizes, and schedules (pipe wall thickness). Parker Hannifin is a global manufacturer of motion and control technologies. Founded in 1918 as the Parker Appliance Company in Cleveland, OH, Parker Hannifin now provides precision-engineered products for many industries including aerospace, commercial, medical, mobile, and industrial manufacturing. With locations on every continent, and in 48 countries, Parker Hannifin offers a variety of solutions for flow control, filtration, and hydraulics, among many others.