Starduct VCD (w. quadrant handle), Model : S-VCD(HQ) frame is made of Z180 galvanized steel sheet, thickness 0.95 ~ 1.15mm. Optional flanges C/TDC/V3/V4 subject to damper sizes. Damper blade is 3v type, made of Z180 gal steel sheet, thickness 0.95 ~ 1.15, max. length 850mm. If damper width > 850mm, blades shall be divided by supporting steel U-channel.

The quadrant handle is step-operation type with pin lock to position each 10% volume air through the damper. The handle has construction and shape make it easy access in narrow space. Damper shafts are made of 10x10mm steel square bar. Shaft bushes are made of PPP plastic of bronze fixed in damper frame. Shaft and blade are joined weldlessly by pressing. Blades are linked together by an interlock mechanism of steel bars tha help blades running simultaneously when opening/closing.

Production standards : Complying with AMCA 500D; Test report No.10131/VLXD-TBMT, Test standard BS-EN 1751:1999

Scope of Test : Leakage of damper frame - Class A, leakage of damper blade -Class 1