emergency shutdown valve(ESD,ESV)
quick shutoff valve
  • Nominal diameter : DN150 ~ DN2800
  • Nominal pressure : PN2.5 ~ PN40
  • Suitable medium : water , steam, gas , oil, etc.
  • Medium temperature : ≤425 ℃
  • Valve open time : 10 to 90 seconds ( adjustable)
  • Normal off valve : 10 to 90 seconds ( adjustable)
  • Quick closing valve : 0.3 to 0.8 seconds
  • Full state minimum flow resistance coefficient : 0.1
  • Power supply : AC380V
  • Optional control power supply : AC220V, DC220V, DC110V, DC24V
  • Can control the action : open valve , close the valve and stop , 15 -degree swimming , fast off , adjust
  • Remote fault interlock fast off
  • Remote signal types : passive switch signal , 4 ~ 20mA analog signal

Also named 0.3s spring type/hydraulic safety quick shut-off valve, mostly used in thermal power stations.

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Conventional fast opening and closing valve installed in the main steam turbine exhaust pipe , connecting pipes and other pipeline .

Explosion quick closing valve mainly used in chemical , metallurgy , energy piping, biomass power generation have been blast furnace gas pressure generating device (TRT) and other dangerous pipeline inlet line adjustment he quickly shut off the emergency , or in the coal industry , anti- gas and other dangerous gases plant by the explosion of high- press equipment to quickly close or open .

Explosion series meets GB3836.1-2000 ” Electrical equipment for explosive gas atmospheres – Part 1 : General requirements “, GB3836.2-2000 ” Electrical equipment for explosive gas atmospheres – Part 2 : Explosion valve ” d “, and IEC79- 7, BS4683, EN50018 regulations. Ex logo Ex dIIAT4, ExdIIBT4, ExdIICT4 applicable to the presence of explosive gas mixtures in place ; the supply is unspecified Explosion levels are ExdIIBT4.

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