GB/T 46814-2025 Active National standards

GB/T 46814-2025 Specification for power station valves

GB/T 46814-2025 Specification for power station valves

Publish Date: 2025-12-31 Implement Date: 2026-07-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us
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Basic Information

Standard Code: GB/T 46814-2025
Standard Type: National standards
Standard Status: Active
is_force_gb: no
CCS Name: The boiler and its auxiliary equipment
ICS Name: Boilers and heat exchangers
Publish Date: 2025-12-31
Implement Date: 2026-07-01
Pages: 168 pages

Scope

This document specifies the parameters and models of power station valves, ordering requirements, general requirements, pressure and temperature ratings, design, materials, manufacturing, inspection, testing and acceptance, marking, painting, packaging, supply and storage, delivery documents, installation, commissioning and maintenance requirements.
This document applies to the design, manufacture and acceptance of cast, forged and welded valves with flange, thread and welded end connections, including shut-off valves, gate valves, plug valves, check valves, safety valves, relief valves, regulating valves, pressure relief valves, temperature relief valves, throttle valves, water distribution valves, drain valves, quick-opening and -closing valves, butterfly valves, ball valves, outlet valves of circulating pumps, interlock valves, high-pressure heat exchanger three-way valves, steam extraction check valves, and other valves used in thermal power generation units. The parameter range is:
a) Pressure class less than or equal to PN 800, maximum working temperature less than or equal to 430 °C;
b) Pressure class from Class 150 to Class 4500;
c) Working pressure less than or equal to 38.5 MPa, maximum working temperature less than or equal to 625 °C;
d) Working pressure less than or equal to 16 MPa, maximum working temperature less than or equal to 648 °C.
Valves used in other steam parameter units, industrial boilers, waste heat boilers, and other special equipment can be referenced and adopted accordingly.

Development Information

Word Count: 300 Thousand words Pages: 168 pages

Referenced Standards

DL/T 959-2005 Guidelines for the application of safety valves in power plant boilers DL/T 2025.1-2019 Pumping station valve maintenance guidelines Part 1 General principles DL/T 2025.2-2019 Pumping station valve maintenance guidelines Part 2 Butterfly valve DL/T 2025.4-2022 Recommendations for Overhaul of Power Plant Valves - Part 4: Ball Valves DL/T 2025.5-2025 Repair Guidelines for Power Plant Valves - Part 5: Gate Valves and Stop Valves DL/T 2025.6-2023 Guidelines for maintenance of power plant valves - Part 6: Safety valves DL/T 2025.7-2022 Piping and Valve Inspection Guidelines - Part 7: Regulating Valves (Electric Power Plants) DL/T 2025.8-2025 Guidelines for maintenance of power plant valves - Part 8: Power plant suction check valve DL/T 2025.9-2025 Guidelines for maintenance of power plant valves - Part 9: Drive mechanisms (only English translation provided) DL/T 2025.10-2025 Guidelines for Overhaul of Power Plant Valves - Part 10: Minimum Flow Valve for Power Plant Boiler Pump JB/T 79-2015 Overall steel pipe flange JB/T 79.1-1994 Convex Surface Integral Cast Steel Pipe Flanges JB/T 79.2-1994 Angular-groove integral cast steel pipe flange JB/T 79.3-1994 Screw groove surface integral cast steel pipe flange JB/T 79.4-1994 Overall cast-steel pipe flange with annular connection surface JB/T 81-2015 Sheet steel plate welding flanged steel pipe flange JB 81-1994 Convex Panel-Type Flat-Weld Steel Pipe Flanges JB/T 82-2015 Welding Steel Pipe Flanges JB/T 82.1-1994 Flange for welded steel pipes with convex surface JB/T 82.2-1994 The welding steel pipe flange of concave and convex faces JB/T 82.3-1994 Serrated face butt welding steel pipe flange JB/T 82.4-1994 Round connected steel pipe flange for face welding JB/T 106-2024 JB/T 106-2024 - Valve labeling and painting JB/T 106-2004 Valves marking and paint JB/T 2203-2013 JB/T 2203-2013 Structural length of direct load spring-operated safety valve JB/T 2203-1999 JB/T 2203-1999 spring-type safety valve structural length JB/T 2769-2008 Valve components high pressure threaded flange JB/T 2769-1992 PN16.0-32.0MPa threaded flange is a type of flange with a pressure rating of 16.0-32.0 MPa. It is typically used for connecting pipes and equipment in a pressure vessel or pipeline system JB/T 6439-2008 Valve pressure parts are inspected by magnetic particle testing JB/T 6439-1992 The valve is subjected to magnetic particle inspection of the pressure die-cast steel parts JB/T 6440-2008 The valve is subjected to radiographic inspection of the pressure die-cast steel component JB/T 6617-2016 JBT 6617-2016 Flexible Graphite Gasket Ring Technical Specification JB/T 6617-1993 JB/T 6617-1993 Technical specification for Flexible Graphite Gland of Valve JB/T 6655-2013 JB/T 6655-2013 Technical specification for heat-resistant cylindrical screw compression springs JB/T 6655-1993 JB/T 6655-1993 High-temperature resistance spring technical specification JB/T 6902-2008 Check method for liquid penetration in valves JB/T 6903-1993 Valve forged steel parts ultrasonic inspection method JB/T 7370-2014 Flexible graphite woven packing JB/T 7370-1994 Flexible graphite woven packing JB/T 7746-2020 Compact forged steel valve JB/T 7746-2006 Compact steel valve JB/T 7746-1995 Shrink-diameter forged steel valve JB/T 7927-2014 The appearance quality requirements for valve cast steel components JB/T 7927-1999 The appearance quality requirements for valve cast steel parts JB/T 7928-2014 Industrial Valve Supply Requirements JB/T 7928-1999 JBT 7928-1999 General valve Supply requirements JB/T 8527-2015 Metal Sealing Butterfly Valve JB/T 8527-1997 Metal Sealing Butterfly Valve JB/T 8531-2013 JBT 8531-2013 Valve manual device technical specification JB/T 8531-1997 Valve manual device technical specification JB/T 12001-2014 General requirements for valves for supercritical and ultra-supercritical parameters of coal-fired power plants JB/T 13023-2017 Technical Requirements for Nitrogen-Carbon-Oxygen Composite Treatment (QPQ) JB/T 13768-2020 Electromagnetic vent valve HG/T 20610 HG/T 20614 HG/T 20615 HG/T 20631 HG/T 20634 NB/T 10939-2022 Rules for acceptance of materials used in boilers NB/T 11268-2023 The technical specification for pressure-bearing steel castings in boilers NB/T 47008-2017 Carbon steel and alloy steel forgings used in pressure equipment NB/T 47008-2010 Carbon and alloy steel forgings for pressure equipments NB/T 47010-2017 Stainless steel and heat-resistant steel forgings used in pressure equipment NB/T 47010-2010 Stainless and heat-resisting steel forgings for pressure equipments NB/T 47013.2-2015 Non-destructive testing of pressure equipment - Part 2: Radiographic testing NB/T 47013.3-2023 Non-destructive testing of pressure equipment - Part 3: Ultrasonic testing NB/T 47013.4-2015 "Non-destructive testing of pressure equipment - Part 4: Magnetic particle testing" NB/T 47013.5-2015 Non-destructive testing of pressure equipment - Part 5: Penetrant testing NB/T 47014-2023 Pressure equipment welding process qualification NB/T 47018.1-2017 Welding Material for Pressure Equipment Ordering Technical Specification Part 1: Purchase General Rules NB/T 47018.1-2011 Technical permission of welding materials for pressure equipment Section 1:General rule NB/T 47028-2023 Nickel and nickel alloy forged parts used in pressure vessels NB/T 47033-2023 Thermal Condensation and Pressure Reduction Device NB/T 47033-2013 Temperature and pressure reduction device NB/T 47046-2015 Nickel and nickel alloy plates used in pressure equipment NB/T 47063-2017 Power plant safety valve

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