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  • API Std 565

    Thermal Reactors for Sulfur Recovery Units in General Refinery Services

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  • API Std 594

    Check Valves: Flanged, Lug, Wafer, and Butt-Welding

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  • API Std 598

    Valve Inspection and Testing

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  • API Std 599

    Metal Plug Valves—Flanged, Threaded, and Welding Ends

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  • API Std 600

    Steel Gate Valves—Flanged and Butt-Welding Ends, Bolted Bonnets

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  • API Std 602

    Gate, Globe, and Check Valves for Sizes DN 100 (NPS 4) and Smaller for the Petroleum and Natural Gas Industries

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  • API Std 603

    Corrosion-Resistant, Bolted Bonnet Gate Valves—Flanged and Butt-Welding Ends

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  • API Std 607

    Fire Test for Quarter-Turn Valves and Valves Equipped with Nonmetallic Seats

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  • API Std 608

    Metal Ball Valves—Flanged, Threaded, and Welding Ends

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  • API Std 609

    Butterfly Valves: Double-Flanged, Lug- and Wafer-Type, and Butt-Welding Ends

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  • API Std 610

    Centrifugal Pumps for Petroleum, Petrochemical and Natural Gas Industries

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  • API Std 611

    General-Purpose Steam Turbines for Petroleum, Chemical, and Gas Industry Services

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