Product Overview
Low temperature gate valve is suitable for methane, liquid natural gas, ethylene, carbon dioxide, liquid ammonia, liquid oxygen, liquid nitrogen, liquid hydrogen and other low-temperature media.
Structural Characteristics
- In order to prevent abnormal pressure rise in the middle chamber, a pressure relief hole is set at the inlet side of the ram;
- The top length of the valve cover is determined according to the working temperature of the valve to ensure the reliable sealing of the valve stem packing;
- The materials of packing, gasket and other parts should be selected reasonably according to the working temperature;
- The chemical composition and low temperature impact toughness of the material should be strictly controlled;
- It adopts a variety of piping flange standards and sealing face type, which is suitable for various engineering needs.
Execution Standard
Design specification: JB/T7749
Structure length: GB/T12221
Connection flange: JB/T79.1, HG/T20592, GB/T9113
Test and inspection: JB/T9092, GB/T13927
Pressure-temperature: GB/T12224
Performance Parameter
Nominal diameter: DN20 ~ 400mm
Nominal pressure: pn1.6 ~ 10MPa
Applicable temperature: – 45 ℃ ~ 196 °C
Main materials: C3, LCB, LCC, 1Cr18Ni9Ti
Applicable media: methane, liquid natural gas, ethylene, carbon dioxide, liquid ammonia, liquid oxygen, liquid fluorine, liquid hydrogen and other low-temperature media
Product Dimensions
