Rotating ball stem tip provides bubble-tight shutoff and ensures long valve life.Large handle ensures ease of operation.All valves are hydrostatically tested prior to shipment. Material traceability on all wetted parts is standard.PTFE or graphite packing is easily adjustable in the field.All packing is below the threads to eliminate contamination by the process, ensure smooth valve operation and long service life.Safety back seating prevents accidental stem blowout and removal under pressure.Standard bonnet lock plate prevents accidental removal under pressure.Wide variety of inlet and outlet configurations and materials.Factory configuration to a wide variety of manufacturers’ tube fittings.