English version machine-translated from the Vietnamese original — under review.
STARDUCT EI PRODUCT SET: EI duct 40/45 - 60/90 - 120 - Bic TDC; FD/MFD EI fire damper up to 120 - L210 - Bic TDC. The damper and the duct share the same traditional construction: compact, lightweight, with quick and convenient connections. The MFD damper uses a Belimo UL555 actuator, NFPA standard, with spring return and auxiliary contacts. In particular, the fusible-link FD damper is the L210 type, wall-mounted, with a torsion spring and a tube fuse. The damper has 5 key features: 1- Mechanical status indication 2- Electrical status indication 3- Local emergency closing. 4- Fuse replacement without removing the ductwork. 5- Pressure balancing (VCD). Convenient for maintenance, repair and periodic inspection. It fully eliminates the blind spots of tension-spring fusible-link dampers.
