GB/T 12552-1990
Replaced
GB/T 28778-2023
Active
National standards
GB/T 28778-2023 Pilot operated safety valves
GB/T 28778-2023 Pilot operated safety valves
Price:
$ 66
Basic Information
Standard Code:
GB/T 28778-2023
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
\nValve
ICS Name:
Overvoltage protection
Publish Date:
2023-09-07
Implement Date:
2024-04-01
Pages:
18 pages
Scope
This document specifies the design, material, and structural requirements for pilot safety valves, factory testing, type testing, determination of discharge volume, calculation of rated discharge volume, and calculation of flow channel area, as well as marking and lead sealing.
This document is applicable to pilot safety valves with a set pressure of not less than 0.1 MPa and a flow channel diameter of not less than 4 mm.
Development Information
Replace the following standards
Referenced Standards
GB/T 1047-1995 Nominal size for pipe components
GB/T 1047-2005 Pipework components—Definition and selection of DN (nominal size)
GB/T 1047-2019 Pipework components—Definition and selection of nominal size
GB/T 12241-2005 Safety valves—General requirements
GB/T 12241-2021 Safety valves—General requirements
GB/T 36588-2018 Safety devices for protection against excessive pressure—Common data
Adopt standards
ISO 4126-4:2013
Related Standards
GB 567-1999
Replaced
GB 567-1999 Bursting discs and bursting disc devices
GB/T 12353-1999
Replaced
GB/T 12353-1999 Classification and mounting dimensions for domed metal bursting disc devices
GB/T 12241-2005
Replaced
GB/T 12241-2005 Safety valves—General requirements
GB/T 12242-2005
Replaced
GB/T 12242-2005 Performance test code—Pressure relief devices
GB/T 567.1-2012
Active