The Subject Of The Order Includes The Successive, As Needed, Delivery Of Brand New Vacuum Valves Intended For The Expansion Of The Vacuum Sewage Network In The Wi zownica Commune, According To Quantitative Scope Specified In The Annex To The Swz. 4.2 Technical Parameters Of The Vacuum Valve: Valve Diameter 90Mm. Equipped With A Counter Built Into The Valve Body Allowing For Automatic Counting Of The Number Of Operating Cycles. Should Have A Button For Manual Switching On For Adjustment And Service Purposes, Built Into The Valve Head. Meet The Requirements Of The Pn-Standard En 16932:2018. Have Durability, Documented Operation Of At Least 250,000 Operating Cycles Without The Need To Replace Valve Components. Made Of Materials Adapted To Work In Sewage Atmosphere Conditions And Their Design Should Limit The Possibility Of Blocking The Valve Seat. Have A Structure Ensuring That The Gap Of The Unclosed Valve Head Not Registered By The Monitoring Sensor Is A Maximum Of 6 Mm. It Should Have A Capacity Ensuring A Maximum Hourly Flow Of 0.5 L/S When Sucking A 40-Liter Portion Of Sewage In One Cycle. It Should Be Possible To Easily Clean The Sensor Membrane For Regeneration And Cleaning Without The Need To Dismantle The Controller Housing. The Check Valve Should Be Dismantled For Periodic Cleaning And Regeneration. The Minimum Opening Vacuum Should Be 20 Kpa. The Valve Must Provide Direct Access To The Valve Seat For Service Purposes Without The Need To Disconnect The Lower Part Of The Body From The Network And Dismantle It Closing And Opening System (Membrane, Spring).
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