Top quality
Valve body and valve leaf: Made from high heat-resistant materials (thick galvanized steel, stainless steel), specially designed and lined with specialized insulation materials (such as ceramic wool, mineral fiber, fireproof gypsum board) inside to ensure thermal insulation (standard I).
Control motor (Actuator): Attached directly to the valve shaft, responsible for opening/closing control. This motor is designed to operate stably in a high temperature environment for a certain period of time and often has a spring return function to automatically close the valve when power is lost or an activation signal is received.
Sensor (optional): Can integrate temperature and smoke sensors to activate the engine.
Sealing gasket: Use high heat resistant material to ensure a tight seal when the valve is closed, preventing smoke from leaking.
Most effective fire spread control: Combining fire prevention and heat insulation features, ensuring fire does not spread through fire compartments, protecting human life and property as much as possible.
Smart system integration: Allows comprehensive monitoring, control and automation, improving the response ability of the fire protection system.
Ensure safety for emergency exits: Prevent smoke and fire from entering emergency exit areas such as stairs and corridors, helping people evacuate safely.
Compliance with strict fire protection regulations: Especially necessary for modern, complex buildings, where fire resistance limits of components are high.
Normal mode: The valve leaf is in the open position (or depending on system requirements) to allow normal air flow. Engine is in standby state.
Fire detection:
The fire alarm system detects smoke/heat and sends an electrical signal to the motor of the MFD EI valve.
Or, if there is an auxiliary thermal fuse, when the local temperature in the duct reaches the threshold, the fuse will blow.
Activate valve closing: The motor receives the signal and quickly controls the valve leaflets to close completely.
Fireproof and thermal insulation: Thanks to its structure and insulation, the MFD EI valve will create a solid barrier, preventing fire and smoke from spreading through the ductwork, while maintaining low temperatures on the non-flammable side for certified times (EI 30, EI 60, EI 90, EI 120, etc.).
