Backflow, valves and chiller replacements

The Contractor shall furnish all equipment, materials, and labor required to perform the following 3 mechanical services:

1. 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
   
   
   
   


2. 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.
   
   
   
   


3. 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.