Backflow, valves and chiller replacements

The Contractor shall furnish all equipment, materials, and labor required to perform the following 3 mechanical services: Backflow Preventors Supply and install 2 each 8” Zurn/Wilkins or equivalent BFP Supply and install 1 each 4” Zurn/Wilkins or equivalent BFP Supply and install 1 each 1.5” Zurn/Wilkins or equivalent BFP Main Gate Valves Supply and install two 8" valves on the effluent side of the backflow preventers. Replace two 8" flanged ductile 90's, one 8" tee, and the seven bolt & gasket kits.

NOTE-This work will need to be completed during off hours. Chiller Pipe Replacement Replace the IO-inch schedule 40-weld pipe (up to 8 feet) that is leaking in the ceiling of the chiller room. Remove the section of IO-inch schedule 40 weld pipe (up to 8 feet) Tis will require disconnecting the chemical feed line. Install 2 new thread-o-lets, plug one off and connect the new chemical line. Replace the schedule 80 PVC all the way back to the ball valve with new split rings.

Leak checked to be performed and monitored by building engineers for 24 hours before insulating Install new insulation and wrapping over new pipe and tie into existing. The plastic vinyl 90's may be reused if not damaged during removal The contractor shall provide and use a smoke eater during all welding, grinding, cutting, and torching of the pipe. Provide necessary fire safety equipment and inform building engineers when fire or sparks will be taking place.