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Corrosion-resistant, Bolted Bonnet Gate Valves-Flanged and Butt-welding Ends
API STD 603 (Standard + Revision Tracker) : 2025
This standard specifies the requirements for corrosion-resistant bolted bonnet gate valves meeting the requirements of Standard Class, ASME B16.34 and having full port openings for use in process piping applications. This standard sets forth the requirements for the following gate valve features:
• bolted bonnet;
• outside screw and yoke;
• rising stems;
• non-rising handwheels;
• single or double gate;
• wedge or parallel sealing;
• metallic seating surfaces;
• flanged or butt-welding ends.
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