Henan Shuangxin Fire Environmental Protection Equipment Manufacturing Co., Ltd.
Henan Shuangxin Fire Environmental Protection Equipment Manufacturing Co., Ltd.
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Manual HVAC fire damper , installed in the ventilation or air-conditioning systems, usually it is open, once fire occurs, the gas temperature of duct arrives at high degrees, and then the fuse protector will be fused and the damper will close under the pull of spring. It can meet the requirement of stability and completeness in a certain time. It can insolate smog and fire outside.
Mechanical dampers shut the cross sectional area of a duct in the event of a fire either by means of pivoting a fire-resistant board (in Europe), or by means of steel shutters, similar to blinds on a window (in North America). In the European designs, the turning mechanism is fully contained, permitting the dampers (subject to type approval) to be grouted in place, which permits a heat sink effect to conduct heat from an accidental building fire, which impinges upon a duct and damper, to be conducted into surrounding structures.
| Fire damper performance parameter table | ||||
| Serial number | name | performance parameters | ||
| 1 | Standard flange specifications | Valve long side b or diameter D (mm) | Flange side width (mm) | |
| D≤280 | 20 | |||
| 280≤D≤630,b≤630 | 25 | |||
| 630＜D1250,630＜b≤1250 | 30 | |||
| 1250＜D≤2000,1500＜b≤2500 | 40 | |||
| D＞2000,2500＜b≤4000 | 50 | |||
| 2 | Temperature sensor | valve static nominal operating temperature 70℃ (valve closes automatically) | ||
| 3 | Material | Valve body | 2~3mmQ235-A | |
| Bles | 2mm708-88 Cold rolled plate | |||
| Axshaft | GB905-82 Cold pull round steel Ф12 | |||
| Axft sleeve | Oil-containing metallurgical powder copper sleeve | |||
| 4 | Local resistance coefficient | Resistance coefficient of ≤ 0.5 at full opening | ||
| 5 | Paint treatment | Ground floor rust proof primer (second floor), outer fire proof paint (medium ash steel paint) | ||
| 6 | Rated voltage | DC24V±10% | ||
| Rated current | 0.7A | |||
| Micro switch | AC380V,3A | |||
| Torque | 10~70Kg.f/cm | |||
| Action mode | automatic, electric, manual or 70℃ to close the valve | |||
| 7 | Fire control valve | Reset method (open state) | Manual reset | |
| Smoke and fire control valve | Manual reset | |||
| Smoke and fire damper | Manual reset | |||
| Remote control smoke and fire damper | Remote control manual reset | |||
| Automatic reset fire damper | Electric reset | |||
| 8 | Air leakage | In the standard state, when the pressure difference on both sides of the valve is 500Pa after the valve is closed, no more than 700mm³/㎡/h | ||
