Normally Closed for Daily Ventilation
Some smoke exhaust components stay closed during normal operation. Our 280℃ Smoke Exhaust Valves are normally closed. This allows daily ventilation systems to work without interference. When a fire occurs, the valve opens. It can receive a fire control signal for electric opening. It can also be opened manually on site. This allows hot smoke to be exhausted. When the smoke temperature reaches 280℃, a fusible alloy melts. The valve closes automatically. This stops flames and hot smoke from spreading. Yancheng Lima Air Conditioning Engineering Co., Ltd. has been making fire protection equipment since 1996.
|
Parameter |
Specification |
|
Normal State |
Closed |
|
Activation |
Electric (fire signal) or manual opening |
|
Closing Temp |
280℃, automatic by fusible alloy |
|
Signal |
Open/close status output for fire linkage |
|
Materials |
Stainless steel, galvanized steel, aluminized zinc steel |
|
Company Founded |
1996 |
Strong Signal Integration
Integration with fire systems is important. Our 280℃ Smoke Exhaust Valves provide open and close signal outputs. These can connect to the fire alarm and control system. This allows coordinated action with other fire safety equipment. The valve body has high strength. It resists high temperatures. The sealing is good, with low air leakage. This ensures reliable operation when needed.
Key Applications for Smoke Control
These valves are used in many places. They work in office buildings, shopping malls, hotels, and commercial complexes. They are also used in underground garages, subway stations, and underground retail spaces. Industrial plants, warehouses, coating workshops, and cleanrooms use them too. Hospitals, schools, gymnasiums, and convention centers also need them. Key locations include smoke exhaust outlets, branch exhaust ducts, vertical shafts, fan inlets, and ducts between fire compartments. Our factory covers 20,000 square meters. We ensure quality through careful testing.
Frequently Asked Questions (FAQ)
Q: Is this valve normally open or closed?
A: It is normally closed to allow daily ventilation systems to operate separately.
Q: How is the valve opened?
A: It can be opened by a fire control signal (electric) or manually on site.
Q: When does it close?
A: It closes automatically when the smoke temperature reaches 280℃.
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