|  MV Series | VF Series | MR Series | DS Series | TF Series | NR Series     NR SERIES     FEATURES AND BENEFITS:     Resilient seal ring on the Disc (rubber or metal) Non-slam effect and closure speed control Double eccentricity Bi-Directional axial shaft support Easy installation and maintenance Large sizes Low pressure drop in flow conditions.     TYPICAL APPLICATIONS:     Pump protection Water transportation Sea water Geothermal water Brine Desalination plant Demineralization water.     TEMPERATURE LIMITS     From -20°C (-15°F) up to +150°C (+320°F)     PRESSURE LIMITS     From Full Vacuum up to +25 Bar (355 psi)     PRODUCTION RANGE     ND 12" up to 80"     BODY STYLE     Double flanged Wafer Lugged.     RATING     NP 6-10 - 16-25 ANSI C1 150.     MATERIALS     Ductile Iron Carbon Steel Stainless Steel Aluminium Bronze High Alloy Titanium     APPLICABLE STANDARDS     Design: ANSI B16.34 / ASME VIII Face to face: API 609 / ISO 5752 short Flange: UNI/DIN/ISO/ANSI/AWWA Testing: API 598   << return to products