Valve,ball 4.00NPS

3. REQUIREMENTS

3.1 ;The 4-inch Ball Valve must be in accordance with Naval Sea Systems Command Drawing 7108102 Assembly A, Naval Sea Systems Command General Notes Drawing 5959311, and all Engineering Reports included with this contract/purchase order, except as amplified or modified herein.;

3.2 Material for Parts Requiring Certification - Quantitative chemical and mechanical analysis is required for the parts listed below unless specifically stated otherwise: Part - ;Body, Piece 1 and Bonnet, Piece 3; Material - ;ASTM-B369, Alloy UNS 96400; Part - ;Ball, Piece 5; Material - SAE-AMS-6931 OR Centrifugally cast 6AL-4V, ASTM-B367, Grade C-5, with mechanical properties as listed in supplementary…