Features & Benefits: - Applications for Hydraulic, Chemical, Steam, Oil/Gas, Oxygen, Vacuum - 1 piece body retainer screw in design, no leakage paths through the body provide maximum safety - Thrust washer prevents galling, reduces torque and provides secondary stem seal - Long cycle life, low uniform torques - Adjustable stem packing - Bottom entry blow-out proof stem design provides maximum safety - Self-adjusting stem packing assembly with Belleville spring for temperature fluctuations and vibration - Locking device available - Investment cast body construction