1. The Subject Of The Contract Is Delivery Along With The Replacement Of Three Check Valves In The Pd -1 Rain Pumping Station At 45 Sobieskiego Street In Legionowo - To Prevent Reverse Flow. Range Of Work 1) Purchase And Delivery Of 3 Pcs. Two -Wheeled Check Valves With A Lever And Load With A Diameter Of Dn600mm With A Set Of Seals. 2) Disassembly Of 3 Check Valves From Existing Pump Technological Routes. 3) Installation Of 3 Pcs Of New Check Valves On Existing Technological Routes. 4) Checking The Tightness Of The Connections And The Starting Test Of The Fitted Fittings. 5) Ensuring The Continuity Of The Rain Pumping Station During The Replacement Of The Valves. Technical Requirements Of Check Valves With A Counterweight: 1) Dnive Dnage Divership, With Lever And Weight And An Inclined Disk, 2) Sealing: Metal-Metal, 3) Valve For Use In Liquids With A Maximum Temperature Of 50 Degrees, 4) Length And Paddling Of The Collar-Measurements Made On Their Own During Local Vision, According To Pn-En 1092-2, Pn10/16, Pn10/16, Pn10/16, Pn10/16, Pn10/16, Pn10/16, Pn10/16, 5) All Internal Parts - Made Of Stainless Steel, 6) Corps And Disk - Covered With Epoxy Paint, 7) Stainless Steel Roller 1.4021 (Aisi 420), 8) Lever And Highlight Supporting The Valve During Closing - Adjustable To Avoid A Hydraulic Impact.
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