API St 600-2015 pdf download

API St 600-2015 pdf download

API St 600-2015 pdf download.Steel Gate Valves—Flanged and Butt-welding Ends, Bolted Bonnets.
1 Scope This standard specifies the requirements for a heavy-duty series of bolted bonnet steel gate valves for petroleum refinery and related applications where corrosion, erosion, and other service conditions would indicate a need for full port openings, heavy wall sections, and large stem diameters. 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 seating, — metallic seating surfaces, — flanged or butt-welding ends. It covers valves of the nominal pipe sizes DN: — 25, 32, 40, 50, 65, 80, 100, 150, 200, 250, 300, 350, 400, 450, 500, 600, 650, 700, 750, 800, 850, 900, 950, 1000, 1050; corresponding to nominal pipe sizes NPS: — 1, 1 1 / 4 , 1 1 / 2 , 2, 2 1 / 2 , 3, 4, 6, 8, 10, 12, 14, 16, 18, 20, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42; and applies to pressure class designations: — 150, 300, 600, 900, 1500, 2500. If product is supplied bearing the API Monogram and manufactured at a facility licensed by API, the requirements of Annex A apply. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. API Standard 598, Valve Inspection and Testing API Standard 624, Type Testing of Rising Stem Valves Equipped with Graphite Packing for Fugitive Emissions ASME B1.1 1 , Unified Inch Screw Threads (UN and UNR Thread Form)
ASME B1.5, Acme Screw Threads ASME B1.8, Stub Acme Screw Threads ASME B1.12, Class 5 Interference—Fit Thread ASME B1.13M, Metric Screw Threads: M Profile ASME B16.5, Pipe Flanges and Flanged Fittings NPS 1/2 through NPS 24 Metric/Inch ASME B16.10, Face-to Face and End-to-End Dimensions of Valves ASME B16.25, Buttwelding Ends ASME B16.34, Valves—Flanged, Threaded and Welding End ASME B16.47, Large Diameter Steel Flanges, NPS 26 Through NPS 60 Metric/Inch Standard ASME B18.2.2, Nuts for General Applications: Machine Screw Nuts, Hex, Square, Hex Flange, and Coupling Nuts (Inch Series) ASME B18.2.6M, Metric Fasteners for Use in Structural Applications ASME B31.3, Process Piping ISO 5210 2 , Industrial valves—Multi-turn valve actuator attachments ISO 5752, Metal valves for use in flanged pipe systems—Face-to-face and centre-to-face dimensions ISO 15649, Petroleum and natural gas industries—Piping MSS SP-91 3 , Guidelines for Manual Operation of Valves MSS SP-102, Multi-Turn Valve Actuator Attachment—Flange and Driving Component Dimensions and Performance Characteristics MSS SP-144, Pressure Seal Bonnet Valves 3 Terms and Definitions For the purposes of this document, the following definitions apply. 3.1 Class An alphanumeric designation that is used for reference purposes relating to valve pressure/temperature capability, taking into account valve material mechanical properties and valve dimensional characteristics. It comprises “Class” followed by a dimensionless whole number. The number following “Class” does not represent a measurable value and is not used for calculation purposes except where specified in this standard.
3.3 NPS An alpha numeric designation of size that is common for components used in a piping system, used for reference purposes, comprising the letters “NPS” followed by a dimensionless number indirectly related to the physical size of the bore or outside diameter of the end connection as appropriate. The dimensionless number may be used as a valve size identifier without the prefix “NPS.” The dimensionless size identification number does not represent a measurable value and is not used for calculation purposes. 3.4 Shell Comprised of the body, bonnet and body-bonnet bolting which constitute the pressure boundary of an API 600 valve. 4 Pressure/Temperature Ratings 4.1 Pressure/temperature ratings shall be in accordance with those specified in the tables of ASME B16.34 for standard class for the applicable material specification and the applicable class. 4.2 Restrictions of temperature and concurrent pressure, or pressure and concurrent temperature, (e.g. those imposed by special soft seals or special trim materials), shall be marked on the valve identification plate (see Section 8). 4.3 The temperature for a corresponding pressure rating is the maximum temperature of the pressure-containing shell of the valve. In general, this temperature is the same as that of the contained fluid. The use of a pressure rating corresponding to a temperature other than that of the contained fluid is the responsibility of the user. 4.4 For temperatures below the lowest temperature listed in the pressure/temperature tables, the service pressure shall be no greater than the pressure for the lowest listed temperature. The use of valves at lower temperatures is the responsibility of the user. Consideration should be given to the loss of ductility and impact strength of many materials at low temperature.

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