Ast CV-870S HP Control Valve For Melamine Service

HP Control Valve For Melamine ServiceControl Valve Division3.Special Control Valves for UREA & MELAMINE ServiceUrea High Pressure BUTTERFLY VALVES CV-86603.1. Main Features This series of butterfly valves hss been specially designed for applications onaggressive and corrosive fluids, as required for Urea plant application.The valve body is from a single forged block.Labyrinth heating circuit for steam or diathermic fluids is available on request.3.2. Materials Body: ASTM A182 F316L, F316L urea grade, Duplex Stainless steels, F310 MoLn S31050and others upon request.Trim: special duplex stainless steels and other materials, in accordance withLicensor standard, are available.Packing: glass loaded PTFE, proprietary design V-rings, to warrant perfect andreliable stem seal and a proper stem cleaning from crystalized fluid residual.Graphite packing for elevated temperature service is available on request.3.3. Sizes and Pressure Classes Sizes: From NPS 4” to NPS 10” as standard,higher dimensions are available on request.Rating: Up to PN 400 or Class 2500, flanged connections with lenticular metal gasket according tocustomer specifications.CV-8661 valve with elliptical disc plug for leakage class III.3.4. Seat leakage Leakage IEC 60534-4 / ISA FCI 70-2 classes II and III, with closure at 20° with elliptical disc plug, are available as standard.Class I with calibrated leakage at closed position and Class IV are available on request.3.5. Design Codes & Product StandardsIEC 60534, FCI 70-2, EN 12516, EN 1092, ASME B16.34, ASME B16.5, proprietary standards.3.6. Options -Special proprietary materials Valve body heating Packing flushing Flushing nozzlesAnti-sand protection for valve and actuator stemCV-8661 – Cv table DNPortRated Cv4" 4" 6" 6" 8" 10"77 90 116 135 153 190300 450 850 1230 1450 2200Valve Rang.120 150 90 100 115 135Coefficients - FL and xT travel 10% 100% FL 0.95 0.58 xT 0.85 0.248