A27H type spring micro-opening safety valve is suitable for working temperature ≤ 200 ℃ water, air, steam and other media equipment or pipeline.
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 | A27H-16 |
Valve Body Material | Gray Cast Iron |
Nominal Pressure | ≤1.6Mpa |
Applicable Media | Water, Steam, Air, etc. |
Applicable Temperature | ≤200℃ |
Product Size Reference

Nominal Diameter | do | R | L | L1 | G | ≈H |
DN15 | 10 | 1/2 | 40 | 65 | 1/2 | 135 |
DN20 | 15 | 3/4 | 45 | 65 | 3/4 | 140 |
DN25 | 20 | 1 | 45 | 70 | 1 | 155 |
DN32 | 25 | 1-1/4 | 55 | 85 | 1-1/4 | 170 |
DN40 | 32 | 1-1/2 | 60 | 90 | 1-1/2 | 310 |
DN50 | 40 | 2 | 67 | 105 | 2 | 322 |
DN65 | 50 | 2-1/2 | 76 | 128 | 2-1/2 | 344 |
DN80 | 65 | 3 | 110 | 145 | 3 | 395 |

















