CEN/TC 164
| Registration number (WIID) | Project No. | Title | Status |
|---|---|---|---|
| 81061 | prEN 14664 | Chemicals used for treatment of water intended for human consumption - Iron (III) sulfate, solid | Aptauja |
| 81091 | LVS EN 15848:2026 | Water conditioning equipment inside buildings - Adjustable chemical dosing systems - Requirements for performance, safety and testing | |
| 81091 | EN 15848:2026 | Water conditioning equipment inside buildings - Adjustable chemical dosing systems - Requirements for performance, safety and testing | Standarts spēkā |
| 81117 | prEN 1489 rev | Building valves - Pressure safety valves - Tests and requirements | Izstrādē |
| 81118 | prEN 1491 rev | Building valves - Expansion valves - Tests and requirements | Izstrādē |
| 81120 | prEN 1487 rev | Building valves – Hydraulic safety groups – Tests and requirements | Izstrādē |
| 81122 | prEN 1488 rev | Building valves - Expansion groups - Tests and requirements | Izstrādē |
| 81124 | prEN 1490 | Building valves - Combined temperature and pressure relief valves - Tests and requirements | Aptauja slēgta |
| 81139 | prEN 18380 | Water conditioning equipment inside buildings — Devices using UV LED units — Requirements for performance, safety and testing. | Izstrādē |
| 81542 | prEN 18268 | Chemicals used for treatment of water intended for human consumption - Antiscalants for membranes - Citric Acid | Aptauja slēgta |
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