We stock 2- piece, full port 1000 WOG threaded stainless steel ball valves in a variety of sizes from 1/4' to 4" in 316 stainless steel. Our stainless steel ball valves can be used with water, oil or gas applications. High corrosion resistance. We also carry a full line of stainless steel fittings. View an overview of our product offerings. We also carry a large inventory of stainless valves, pipe, tube, fittings and accessories in multiple sizes. Visit our pipe sizes and weight chart. View our specifications on our full port ball valves and other products. View our standard specifications chart. View our stainless steel resource grade chart. It lists multiple applications for the many different Grades of stainless steel. Please view our Reference Catalog highlighting our stainless products including our stainless steel ball valves. Our reference catalog features stainless ball valves and other stainless steel products and accessories. View our stainless steel pipe theoretical bursting pressures chart. A ball valve is a quarter-turn valve that incorporates a pivoting ball that is perforated to control the flow of water, oil or gas within the piping system. The ball valve is open when the handle is in alignment with the pipe and closed when the ball valve handle is in a 90 degree angle with the pipe. Stainless steel ball valves are reliable even after long periods in a stationary position. They are preferred by many plumbers and tradesman when choosing a valve for shutoff applications. The downside is ball valves lack fine control in throttling situations. When looking at the specifications of a stainless steel ball valve you will see descriptions that might include: WOG, which means water, oil & gas.