Features and Benefits Provides accurate regulations and control of flow. Rising stem design. High quality bronze construction Threads to BS EN 10226 (ISO7) or ISO228 Applicable Standards Connection standard: ISO228 Technical Data Nominal Diameter:DN15~DN50 (12"~2") Nominal pressure: PN 16 Temperature range: -5C ~ +85C Sealing test: 1.1PN Shell test: 1.5PN Suitable for: Water, ethylene glycol, non correction medium, etc.