DAMPERS, SPLITTERS, ETC Clause Samples
DAMPERS, SPLITTERS, ETC. A. Furnish and install all manual dampers, splitters, and deflectors shown on the Drawings or wherever required for the proper air flow and balancing of the air handling systems and as specified. Hardware shall be equal to Ventfabrics Co. Project No. C-0019 ADDENDUM NO. 1 15890-3 Project No. C-0019 ADDENDUM NO. 1 15890-13
1. Manual dampers and splitters in square or rectangular low pressure ductwork shall be not less than No. 16 U.S.S. gauge galvanized sheet steel. Provide manual dampers and splitters with adjustment means with fixing device. Dampers shall be easy working and provided with steel shafts and No. 609 end bearings.
2. Branch line balancing dampers in medium pressure ductwork shall be of the butterfly type of No. 16 U.S.S. gauge galvanized sheet steel with rounded edges and they shall be vibration free and shall have locking devices and airtight packing glands where damper shafts extend thru ductwork.
3. Manual dampers in ductwork larger than 2 square feet shall be opposed-blade volume dampers with maximum 8" blades. Provide No. 555 quadrant control.
4. wherever damper fixing or locking devices are not exposed or accessible thru access panels, provide Ventlok No. 677 or Young No. 315 key operated regulators with prime coated adjustable covers.
