NB/T 47044-2014
Valves for power station (English Version)

Standard No.

NB/T 47044-2014

Language

Chinese, Available in English version

Release Date

2014

Published By

Professional Standard - Energy

Latest

NB/T 47044-2014

Replace

JB/T 3595-2002

Scope

This standard specifies the pressure-temperature ratings, general requirements, ordering requirements, design and manufacturing, materials, welding, heat treatment, repair, inspection, testing, marking, painting, supply, packaging, delivery documents, valve installation of power station valves , debugging, quality assurance and environmental protection requirements. This standard applies to the design, manufacture and acceptance of cast, forged and welded valves with flange, threaded and welded end connections, including stop valves, gate valves, blocking valves, check valves, Safety valve, relief valve, regulating valve, pressure reducing valve, temperature reducing and pressure reducing valve, throttle valve, water dis ribution valve, sewage valve, quick opening and closing valve, butterfly valve, ball valve, circulation pump outlet valve, locking valve, high Add three-way valves, air extraction check valves and other types of steel valves and nickel-based alloy valves for thermal power units. The parameter range is PN series: 　——The nominal pressure is less than or equal to 80MPa, and the maximum operating temperature is less than or equal to 430 ℃; 　——The working pressure is less than or equal to 35MPa, the maximum working temperature is less than or equal to 625℃; 　——The working pressure is less than or equal to 8MPa, the maximum working temperature is less than or equal to 648℃. Class series: 　——Pressure levels Class 150 to Class 4500. Valves used in other steam parameter units and industrial boilers, waste heat boilers and other special equipment can also be adopted by reference.

NB/T 47044-2014 Referenced Document

• GB 150 Pressure Vessels (Bound Edition)*， 2024-04-20 Update
• GB 713 Steel plates for boilers and pressure vessels
• GB/T 1047 Pipework components—Definition and selection of nominal size*， 2019-03-25 Update
• GB/T 1184 Geometrical tolerancing--Geometrical tolerance for features without individual tolerance indications
• GB/T 1220 Stainless steel bars
• GB/T 1221 Heat-resistant steel bars
• GB/T 152.4 Fasteners--Counterbores for hexagon bolts and nuts
• GB/T 1804 General tolerances Tolerances for linear and angular dimensions without individual tolerance indications
• GB/T 196 General purpose metric screw threads--Basic dimensions
• GB/T 197 General purpose metric screw threads—Tolerances*， 2018-03-15 Update
• GB/T 1972 Disc spring
• GB/T 2100 Corrosion-resistanst steel castings for general applications*， 2017-11-01 Update
• GB/T 3077 Alloy structure steels*， 2015-12-10 Update
• GB/T 4237 Hot rolled stainless steel plate,sheet and strip*， 2015-09-11 Update
• GB/T 4622.1 Spiral wound gaskets for pipe flanges—Part 1: PN designated*， 2022-10-12 Update
• GB/T 4622.2 Spiral wound gaskets for pipe flanges—Part 2: Class designated*， 2022-10-12 Update
• GB/T 4622.3 Specification of spiral wound gaskets
• GB/T 5796.1 Trapezoidal screw threads—Part 1: Profiles*， 2022-03-09 Update
• GB/T 5796.2 Trapezoidal screw threads—Part 2: General plan*， 2022-03-09 Update
• GB/T 5796.3 Trapezoidal screw threads—Part 3: Basic dimensions*， 2022-03-09 Update
• GB/T 5796.4 Trapezoidal screw threads—Part 4: Tolerances*， 2022-03-09 Update
• GB/T 6414 Castings.Dimensional tolerances and geometrical tolerances and machining allowances*， 2017-12-29 Update
• GB/T 6567.4 Technical drawings.Graphical symbols for piping systems.Valves and control components
• GB/T 699 Quality carbon structure steels*， 2015-12-10 Update
• GB/T 711 Hot-rolled quality carbon structural steel plates sheets and strips*， 2017-02-28 Update
• GB/T 7233.1 Ultrasonic testing of steel castings - Part 1: General purpose steel castings*， 2023-03-17 Update
• GB/T 7233.2 Steel castings—Ultrasonic testing—Part 2:Steel castings for highly stressed components*， 2023-05-23 Update
• GB/T 7306.1 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads Part 1:Parallel internal and taper external threads
• GB/T 7306.2 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads Part 2:Taper internal and external threads
• GB/T 984 Hardfacing electrodes for shielded metal arc welding

NB/T 47044-2014 history

• 2014 NB/T 47044-2014 Valves for power station
• 2002 JB/T 3595-2002 Valves for power station-general requirements

NB/T 47044-2014 Valves for power station has been changed from JB/T 3595-2002 Valves for power station-general requirements.