Velan Steam Valve Salients.xlsx

This is a procurement specification document detailing Velan steam valve requirements for the USS FRANK CABLE (T-ALT AS 39 19018) steam valve replacement project. The document specifies four valve assemblies required for a naval steam system, organized by service application with detailed technical salient characteristics and construction standards.

The procurement covers four Velan globe-style steam valves in quantities of two each: (1) Superheater Steam Stop Valve with Motor-Operated Valve (MOV) actuator, 6-inch, 705 psig, 875°F, CR-MO construction per A217 Gr. WC6 standard; (2) Desuperheater Outlet Steam Stop Valve with MOV actuator, 5-inch, 705 psig, 725°F, carbon steel construction per A216 Gr. WCB standard; (3) Desuperheater Steam to Soot Blowers Valve (manual), 2.5-inch, 705 psig, 725°F, carbon steel construction per A216 Gr. WCB standard; and (4) Main Feed Water Stop/Check Valve to Economizer and Boiler (manual), 4-inch, 920 psig, 263°F, carbon steel construction per A216 Gr. WCB standard. All valves feature 600LB pressure class ratings, butt weld end connections, bolted bonnets, CR-13 stems, and hard-faced/Stellite seats and discs per ASME B16.10 and B16.34 standards. Motor-operated valves require 440V, 60Hz, three-phase power with 15-second cycle times, dual contactors for push-button closure, and single contactor indicator light controls for open/close operations. The specification includes Velan drawing references, bypass valve configurations for two valves, and photographic documentation of valve actuators and installations.