Specifications include, but are not limited to: DEAERATORS: A. Horizontal, tray, single-compartment deaerator, and a separate packaged surge tank with transfer and feedwater pumps and controls to supply feedwater to deaerator.; B. Material for Wetted Components: Components in contact with water that has not been deaerated shall be made of Type 316 stainless steel.; C. Adjustable Spray Valves: Type 316 stainless steel. Arrange spray valves for counterflow of steam and condensate and so corrosive gases being vented do not contact deaerator's head or shell.; D. Vent Condenser: Stainless steel, with automatic and manual vent valves.; E. Deaerator and Storage Tank: 1. Material: Welded SA516-70 carbon steel.; 2. Additional Corrosion Protection: a. 0.13-inch (3.3-mm) thickness allowance.; b. Electrolytic corrosion-inhibitor anode.; 3. Access: Manhole in deaerator and storage tank for access to internal components for inspection and service.; 4. Factory-Applied Insulation and Jacket: Minimum thickness of 2 inches (50 mm) for mineralfiber pipe and tank insulation. Cofver insulation with painted steel jacket.; 5. Factory-Installed Pipe, NPS 2-1/2 (DN 65) and Smaller: ASTM A 53/A 53M, Type S (seamless), Grade B; or ASTM A 106, Type S, Grade B, Schedule 80; with threaded joints and fittings.; SURGE TANK: Factory-assembled and -tested unit consisting of a condensate receiver, transfer pumps, and controls.; Factory-Installed Pipe, NPS 2-1/2 (DN 65) and Smaller: ASTM A 53/A 53M, Type S (seamless), Grade B; or ASTM A 106, Type S, Grade B, Schedule 80; with threaded joints and fittings.: 1. Cast-Iron Threaded Fittings: ASME B16.4, Class 125.; 2. Malleable-Iron Threaded Fittings: ASME B16.3, Class 150.; 3. Forged-Steel Fittings: ASME B16.11, Class 3000.; 4. Malleable-Iron Unions: ASME B16.39, Class 150.; 5. Forged-Steel Unions: MSS SP-83, Class 3000.