CEN/TC 164
| Registration number (WIID) | Project No. | Title | Status |
|---|---|---|---|
| 74724 | prEN 13959 rev | Anti-pollution check valves - DN 6 to DN 250 inclusive family E, type A, B, C and D | Izstrādē |
| 74723 | FprEN 13079 | Devices to prevent pollution by backflow of potable water - Air gap with injector - Family A - Type D | Izstrādē |
| 74722 | prEN 15040 rev | Chemicals used for treatment of water intended for human consumption - Antiscalants for membranes - Phosphonic acids and salts | Izstrādē |
| 74721 | LVS EN 13828:2025 | Building valves - Manually operated copper alloy and stainless steel ball valves for potable water supply in buildings - Tests and requirements | Standarts spēkā |
| 74721 | EN 13828:2025 | Building valves - Manually operated copper alloy and stainless steel ball valves for potable water supply in buildings - Tests and requirements | Standarts spēkā |
| 74720 | prEN 14367 rev | Non controllable backflow preventer with different pressure zones - Family C, type A | Izstrādē |
| 74719 | prEN 15039 rev | Chemicals used for treatment of water intended for human consumption - Antiscalants for membranes - Polycarboxilic acids and salts | Izstrādē |
| 74718 | prEN 12932 rev | Chemicals used for treatment of water intended for human consumption - Chemicals for emergency use - Sodium dichloroisocyanurate, dihydrate | Izstrādē |
| 74432 | prEN 12926 rev | Chemicals used for treatment of water intended for human consumption - Sodium peroxodisulfate | Izstrādē |
| 74431 | prEN 12931 rev | Chemicals used for treatment of water intended for human consumption - Chemicals for emergency use - Sodium dichloroisocyanurate, anhydrous | Izstrādē |
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