The Triac F88 Series Firesafe Ball Valves have successfully passed the API-607 4th edition test. They are available with 316SS or WCB body. These high quality investment cast valves feature a fully machined bore. The superior live-loaded packing system is accomplished with Bellville washers, "V"-ring packing and a unique primary pyramidal stem seal. This advanced sealing system provides for protection against stem leaks experienced by ordinary ball valves.