Materials of main parts

Valve body:CF8

Valve disc:304

Valve cover: CF8

Valve stem: 304

Main seal: PTFE OR PCTFE

Cylinder: Cast aluminium

Stents: Cast aluminium

Main technical parameters

Nominal pressure:4.0MPa

Design temperature:-196℃~+80℃

Applicable medium:LNG、LO2、LN2、LAr

Connection method:Insert welding、Butt welding

Nominal diameter: 20mm ~ 50mm

Strength test pressure: 4.OMpa

Air tightness test pressure: 1 . 6Mpa

Direction of seal test pressure: 0 .4Mpa

Air pressure cylinder: 0 .4 ~ 0 . 6Mpa

Emergency cut-off temperature: +7o℃

Emergency cut-off time: <2 second