QDY421F LPG emergency shut-off valve

Hydraulic emergency cut off valve
using the hand pump handle to do reciprocating action, so that the pressure increases to open the emergency cut off valve, the medium can pass, such as fire or other emergency, the pressure relief valve of the hand pump is opened, the oil pressure system quickly depresses, so that the cut off valve is immediately closed.
The structure of the hydraulic emergency cut off valve is equipped with a low melting point (fusible alloy) plug, in the event of an accident due to the temperature increase ±70ºC melting pressure relief to quickly close the inlet and outlet of the tank to ensure the reliability of the tank system.



The main shape connection size of the hydraulic emergency cut off valve:

Hydraulic emergency cut off valve product use:
hydraulic emergency cut off valve is used in liquefied petroleum gas large storage tank, pipeline system valve accessories. Mainly used in the emergency can quickly close the inlet and outlet of the storage tank at a far place, in the emergency cut off valve oil pressure pipe road or pressure pipe road with low melting point material valve plug, in the event of an accident due to temperature rise easy to melt pressure relief to quickly close the inlet and outlet of the storage tank to ensure the reliability of the liquefied petroleum storage system.