Bids Are Invited For Price Registration For The Acquisition Of 3/4” To 2.1/2” Gate Valves In Copper/Brass Alloy, 3/4” And 1” Brass Ferrules And 20Mm Ball Valves In Copper/Brass Alloy For Basic Sanitation Installations Of Drinking Water Supply.

Dnr Ferrule Type Register 20Mm (3/4) In Copper Alloys For Building Branch According To Nbr 13.466 Abnt., Brass Ferrule Of 1 Basic Sanitation Standard, According To Nbr Standard, Drawer Register Dnr 50Mm (2) In Copper Alloy (Brass), For Sanitation, Pn 16, With Cast Aluminum Handwheel, Internal Threads According To Nbr Nm Iso 7-1 And Raw Yellow Finish, Manufactured According To Nbr 14580, For Sanitation Installations., Dnr Drawer Register 65Mm (2.1/2) In Copper Alloy (Brass), For Sanitation Installations., Dnr Drawer Register 20Mm(3/4) In Copper Alloy (Brass), Dnr Drawer Register 40Mm(1.1/2) With Copper Alloy Handwheel, With Cast Aluminum Handwheel, Internal Threads Conf. Nbr Nm Iso 7-1, Gross Yellow Finish, Standard Nbr 14580, For Installation In Sanitation., Pressure Register Dnr 20 (3/4) Copper Alloy (Brass) For Sanitation, With Maneuvering Wing, Manufactured In Accordance With Nbr 14119 And 14120, With Threads In Accordance With Nbr Nm Iso 7-1, Ball Valve Dn20mm Requirements: Adapters With Mechanical Joint To Be Connected To 20 Polyethylene Tube; Head With Internal Hexagon For M6 Wrench, As Per Nbr 10112; Adapter Or Union With Manual Tightening Flap Featuring A Minimum Free Width Of 20Mm For The Adapter And For The Union Of 20Mm Tubes; The Sealing Element (Ring/Oring) Used In The Adapter And In The Union May Be A Toroid With A Circular Section, Or Not, Free From Burrs And Surface Defects, Made Of Pressed Nitrile Rubber, With A Nominal Shore Hardness Between 50 And 70, With A Thickness Between 20-2.5 And 4.5 Mm, Being Housed In The Bag In Such A Way As Not To Allow Any Displacement In The Assembly And Disassembly Operations Of The Part And In The Installation Of The Polyethylene Branch Pipe; The Minimum Penetration Depth Of The Polyethylene Tube Into The Adapter Must Be 20 Mm, After The Sealing Element (Ring/Oring); The Material Used In The Manufacture Of The Branchs Polyethylene Pipe Locking Claw, With The Function Of Preventing Its Axial Displacement, Must Be Made Of Plastic Material With Greater Hardness Than That Of The Polyethylene Pipe, Recommending The Use Of Identification Polyacetal (Pom) According To Astm D 3677. The Pipe Locking Claw Cannot Transmit Efforts To The Ring. Sealing In The Installation Process.