A21W-16T Hexagon Brass Safety Valve, Spring Low-Lift External Thread Relief Valve for Air Compressor Pressure Tank Steam Generator

**A21W-16T hexagon brass safety valve is spring direct load low-lift safety valve**. HPb59-1 brass body with hexagon shape for easy wrench mounting, external thread connection, W metal hard seal, nominal pressure PN16. Low lift stroke, suitable for liquid, compressed air and low-pressure steam, max working temperature ≤200℃. When pressure inside pressure tank, air compressor pipeline or steam generator exceeds preset value, valve pops for pressure relief and reseats automatically after pressure drop. Compact size, vertical installation required, pre-adjustable set pressure. Widely used for small pressure vessels, air compressor tank, hot water pressure tank and steam generator.