| Product name: | Fire retardant vent valve |
| Appliation: | External type, integrating fire retardant and breathing functions |
| Standard: | GB 18564.1-2006 |
| Material: | cast aluminum alloy |
| Parameters(Selecting Order Item): | |
| Item No. | Description |
| WD-SCZ-W | Nominal diameter Ø50, mounting size 4-Ø8.5, P.C.D=Ø110 |
| WD-SCZ-F | Nominal diameter Ø40, mounting size G11/2 |
| Technique Specification: | |
| Exhalation pressure: | 6~8KPa |
| Suction pressure: | -2~-3KPa |
| Operating temperature range: | -20℃ ~70℃ |
| Remark: | The sealing material shall be replaced every 6 months |