prEN 14453
Įtaisai geriamajam vandeniui apsaugoti nuo taršos dėl atbulinio tekėjimo. Nuo DN 10 iki DN 20 vardinio skersmens vamzdyno pertraukikliai su atviromis angomis. D šeima, C tipas
Standarto projektas Naujas
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2026-06-07
Eksportuoti komentarus
Projekto etapai
1. Prioritetinių darbo temų pažymėjimas ir ekspertų skyrimas
2. Projektas
3. Viešoji apklausa
Nuo 2026-04-06
iki 2026-06-07
4. Closure of enquiry
5. Submission to Formal Vote
Organizacija
CEN Europos standartizacijos komitetasICS
23.060.50 - Atgaliniai vožtuvaiTechnikos komitetas
TK 29 VandentvarkaUžsienio technikos komitetas
CEN/TC 164Komentarų skaičius
0Komentavimo pradžia
2026-04-06Taikymo sritis
This document specifies the field of application, the dimensional, the physico-chemical properties and the properties of general hydraulic, mechanical and acoustic design of pipe interrupters with permanent atmospheric vent family D Type C, intended to prevent pollution of potable water by backflow, caused by backsiphoning only. It is applicable to pipe interrupters with permanent atmospheric vent in denominations DN 10 up to DN 20. It covers pipe interrupters with permanent atmospheric vent of PN 10 that are capable of working without modification or adjustment: - at any pressure, up to 1 MPa (10 bar); - with any pressure variation, up to 1 MPa (10 bar); - in permanent duty at a limited temperature of 65 °C and for maximum 1 h at 90 °C. It specifies also the test methods and requirements for verifying their characteristics, the marking and the presentation at delivery. Backflow protection devices integrated in flushing valves are similar to DC and are not covered under this document. The requirements are stated in EN 12541.