A48Y type spring-loaded full-opening safety valve is suitable for the working temperature ≤ 350 ℃ steam, air and other media equipment or pipeline, as overpressure protection device.
Working Principle
When the pressure in the equipment and pipeline exceeds the permissible value, the valve automatically opens and then discharges the full amount; when the pressure drops to the specified value, the valve automatically closes to ensure the safe operation of the equipment and pipeline.
Product Parameters
Product Model | A48Y-16C |
Valve Body Material | Cast Steel |
Nominal Pressure | ≤1.6Mpa |
Applicable Media | Steam, Air, etc. |
Applicable Temperature | ≤350°C |
Product Size Reference

Nominal Diameter | do | DN | L | L1 | ≈H |
DN20 | 15 | 25 | 110 | 95 | 306 |
DN25 | 16 | 32 | 110 | 95 | 306 |
DN32 | 20 | 40 | 115 | 100 | 309 |
DN40 | 25 | 50 | 120 | 110 | 323 |
DN50 | 32 | 65 | 135 | 120 | 333 |
DN65 | 40 | 80 | 160 | 140 | 420 |
DN80 | 50 | 100 | 170 | 135 | 432 |
DN100 | 65 | 125 | 205 | 160 | 553 |
DN125 | 80 | 150 | 210 | 190 | 639 |
DN150 | 100 | 175 | 255 | 230 | 654 |
DN200 | 125 | 250 | 305 | 260 | 797 |
DN250 | 150 | 300 | 350 | 320 | 998 |
DN300 | 220 | 400 | 370 | 350 | 1246 |
DN350 | 250 | 500 | 500 | 450 | 1711 |
DN400 | 280 | 500 | 500 | 450 | 1780 |

















