Valrom-manufactured PPR valves are used for indoor installations for hot water, cold water, and heating supply. The product complies with SR EN ISO 16139. Tightness complies with ISO 9393-2:2005. The valves are PN25 bar at 20°C, PN6 for hot water and heating, and are designed for use in PPR systems for hot/cold water distribution and heating. The valves are marked with: Valrom logo, PP-R material, nominal diameter DN, water flow direction arrow, production date. The valves are designed for fully closed/open use. They are not intended for flow regulation.