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Sfd-y smoke and fire damper (national standard code pfhf wsdc / dj-y / k)

Performance:

1. It is normally open at ordinary times. In case of fire, the smoke (temperature) sensor sends a signal through the control center, input 24V DC, the electromagnetic iron in the actuator is energized, and the valve automatically closes and outputs the closing signal.

2. The valve can also be closed manually or operated at 280 ℃.

3. The control voltage is DC24V, the contact capacity of microswitch is AC380V, 3a, and the action current of electromagnet is 0.3A. It can be interlocked with related equipment.

4. When fully open, the resistance coefficient f ≤ 0.5.

Explain:

Sfd-y-1 is a manual smoke fire damper - normally open 280 ℃; sfd2-y-1 is a circular manual smoke fire damper - normally open 280 ℃;

Sfd-y-2 is a manual smoke fire damper - normally open 280 ℃; sfd2-y-2 is a circular manual smoke fire damper - normally open 280 ℃;

Sfd-y-3 is a manual smoke fire damper - normally open 280 ℃; sfd2-y-3 is a circular manual smoke fire damper - normally open 280 ℃;

Sfd-y-4 is a manual smoke fire damper - normally open 280 ℃; sfd2-y-4 is a circular manual smoke fire damper - normally open 280 ℃;