GB/T 40011-2021 (English Version) PDF

Scope: This standard specifies the terms and definitions, technical requirements, test methods, inspection requirements, signs, packaging, transportation and storage of low-temperature pilot-operated safety valves (hereinafter referred to as safety valves). This standard applies to pilot-operated safety valves with low-temperature evaporative gas medium with nominal pressure less than or equal to PN100, nominal size less than or equal to DN500, operating temperature not lower than -196 °C, and minimum set pressure of 0.1 MPa. The pilot-operated safety valve with a set pressure of 0.06 MPa~0.1 MPa for low-temperature evaporating gas medium can be used for reference.

GB/T 40011-2021 Referenced Document

GB/T 12225 General purpose industrial valves.Specification of copper alloy castings
GB/T 12241 Safety valves—General requirements
GB/T 12242 Pressure relief devices—Performance test code
GB/T 150.4 Pressure vessels - Part 4: Fabrication,inspection and testing,and acceptance
GB/T 28778 Pilot operated safety valve*， 2023-09-07 Update
HG 20202 Specifications for construction and acceptance of degreasing engineering
JB/T 7248 Technical specification for low temperature service steel casting for valves
NB/T 47013.2-2015 Nondestructive testing of pressure equipments.Part 2: Radiographic testing
NB/T 47013.3-2015 Nondestructive testing of pressure equipments.Part 3: Ultrasonic testing