SK 589 50 is a part of Fisher Controls' Hi-Pro Series line of quarter turn valves and is a rugged, pre-machined, ball valve that has been designed for applications requiring tight shutoff. It is manual valve featuring a buoyancy valve that offers a high shutoff ratio and is ideal for process applications that require full throttling capability, Class 150 and 300 pressure ratings, and a temperature range of -50°F to 400°F. The quarter-turn, bubble-tight stem ensures quick, easy operation while the stem ramp design and unlimited stem adjustment maximize stem life. It features a stainless steel construction as well as a reinforced PTFE/EPDM seats, stem packing, and elastomeric body seal that provide superior sealing.