Valve body:CF8
Valve disc:304
Nalve cover:CF8
Valve stem:304
Main seal:PTFE OR PCTFE
cylinder: cast aluminium
stents:cast aluminium
Nominal pressure:4.0MPa
Design temperature:-196℃~+70℃
Applicable medium:LNG、LO2、LN2、LAr
Connection method:Insert welding、Butt welding
Nominal diameter:20mm~50mm
Strength test pressure:4.0MPa
Air tightness test pressure:1.6MPa
direction of seal test pressure:0.4MPa
Air pressure cylinder:0.4~0.6MPa
Emergency cut-off temperature:+70℃
Emergency cut-off time:<2 second
| MODEL | Main form and the connection size(mm) | ||||||||||
| H | H1 | H2 | DO | D1 | D2 | D | M | W1 | W2 | B | |
| DZQ-10 | 180 | 469 | 120 | φ10 | φ14.5 | φ80 | φ100 | Rc1/4 | 60 | φ130 | 6 |
| DZQ-15 | 188 | 477 | 128 | φ15 | φ18.5 | φ80 | φ100 | Rc1/4 | 65 | φ130 | 6 |
| DZQ-25 | 194 | 492 | 131.5 | φ25 | φ32.5 | φ82 | φ100 | Rc1/4 | 90 | φ130 | 8 |
| DZQ-32 | 203 | 501 | 141.5 | φ32 | φ38.5 | φ101 | φ100 | Rc1/4 | 105 | φ130 | 8 |
| DZQ-40 | 230 | 578 | 173 | φ40 | φ45.5 | φ101 | φ125 | Rc1/4 | 120 | φ160 | 8 |
| DZQ-50 | 236 | 584 | 176.5 | φ50 | φ57.5 | φ126 | φ125 | Rc1/4 | 140 | φ160 | 10 |