Insulation gate valve is mainly used in petroleum, chemical, metallurgical, pharmaceutical and other systems, the valve assembly of the jacket to the valve between two flanges, valve side, the bottom has set up the connection Jacket mouth, jacket can be free to flow through steam or other thermal insulation medium, to ensure that the viscous medium can smoothly flow through the valve 
 
 ◆ implementation of standards
The design and manufacture: GB12234
Flange Dimensions: JB/T79 GB9113
Pressure and Temperature: GB9131
Structure length: GB12221
Butt welding connection dimension: --
Inspection and Test: GB13927