Válvula de respiro com corta-chamas (respiração)

  • Nominal Diameter: DN20 ~ DN300mm (3/4” ~ 12”)
  • Nominal Pressure: PN0.6 ~ 2.5Mpa (150LB ~ 300LB)
  • Body Material: Carbon Steel (CS), SS304, SS316L
  • Diaphragm Material: PTFE, FEP, Silicone Rubber, Viton
  • Pressure Settings: Relief Pressure: +0.3~103.4 Kpa, Vacuum Pressure: -0.3~-82 Kpa
  • Specification Standard: SY/T0511.1-2010
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When the pressure inside the tank balances with atmospheric pressure, both the positive and negative pressure valve discs seal tightly with the valve seat.

  • Positive Pressure Relief: If the tank pressure exceeds atmospheric pressure (positive pressure), the high pressure inside the tank acts on the lower side of the valve disc, overcoming the external atmospheric pressure and valve disc weight, allowing the excess pressure to be released.
  • Negative Pressure Relief: If the tank pressure drops below atmospheric pressure (negative pressure), atmospheric pressure enters through the intake channel, acting on the lower side of the intake valve disc, overcoming the internal tank pressure and valve disc weight, allowing air to enter the tank to balance the pressure.