This code specifies standards for the manufacture and use of cast, forged, and fabricated valves. This includes flanged, threaded, welding end, and wafer or flangeless valves made of steel, nickel-based alloys, and other alloys for high-pressure and high-temperature applications like boilers and water heaters. It is primarily applicable in new construction rather than updates of existing structures.
Who uses it?
Valve manufacturers and anyone involved in the purchase, maintenance, training, and safe use of valves within pressure equipment.
What is it for?
ASME B16.34 pertains to:
- measuring pressure-temperature ratings, dimensions, and tolerances
- new construction
- nondestructive examination requirements
- material ratings
- testing
When is it used?
This code applies with equipment described in the ASME B16 Series of Standards, along with the Boiler and Pressure Vessel Code and other ASME B31 piping codes.
This code specifically addresses valves in heating and cooling power station systems, including electrical and geothermal power generators. B31.1 is one of the ASME's most requested codes, relevant for boiler and pressure vessel systems around the world. It should be used in conjunction with ASME's Process Piping Code.
Who uses it?
Power piping system manufacturers, designers, operators, and owners.
What is it for?
ASME B31.1 specifies minimum system requirements for power piping:
- design
- erection
- examination
- fabrication
- inspection
- maintenance
- materials
- operation
- testing
This standard governs piping systems in:
- central and district heating and cooling systems
- electric power generating stations
- geothermal heating systems
- high-temperature, high-pressure water boilers
- industrial and institutional plants
- power boilers
When is it used?
As a companion to ASME's B31.3 Code on Process Piping, along with other codes in ASME's B31 series.
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Anyone involved in the manufacture and maintenance of process piping should use this code, including those in the chemical and petroleum refinery industries. It should be used along with ASME's Power Piping standard. B31.1 is a highly requested code from ASME.
Who uses it?
Process piping manufacturers, users, constructors, and designers. Additionally, anyone involved in the fabrication, assembly, erection, examination, inspection, and testing of process piping.
What is it for?
ASME B31.3 applies to the materials and components of process piping, as well as design, fabrication, assembly, erection, examination, inspection, and testing. It specifically applies to piping found in:
- chemical plants
- cryogenic plants
- paper plants
- petroleum refineries
- pharmaceutical plants
- semiconductor plants
- textile factories
- other processing plants and terminals
Piping in these industries can transport:
- cryogenic fluids
- fluidized solids
- gas, steam, air, and water
- petroleum products
- raw, intermediate, and finished chemicals
- refrigerants
When is it used?
Used as a companion to ASME's B31.1 Code on Power Piping, along with other codes in ASME's B31 series.
This code applies to piping systems that transport liquid or nonhazardous aqueous slurries between production facilities and receiving terminals, such as coal, mineral ores, and concentrates.
Who uses it?
Liquid pipeline designers, owners, regulators, inspectors, and manufacturers.
What is it for?
ASME B31.4 is applied to piping systems for:
- carbon dioxide
- liquid alcohol
- liquid anhydrous ammonia
- liquid petroleum products
- aqueous slurries of nonhazardous materials
The standard also includes design, materials, construction, assembly, inspection, testing, operation, and maintenance requirements for liquid pipeline systems in:
- above-ground or below-ground storage facilities
- ammonia plants
- marine, rail, and truck terminals
- natural gas processing plants
- pump stations
- refineries
- tank farms
When is it used?
Used in conjunction with other ASME B31 standards to ensure compliance with operational and safety regulations governing liquid or aqueous slurry piping systems.
This standard applies to any piping system within the gas transport or distribution industry, including updates that pertain to the training of operational personnel.
Who uses it?
Gas pipeline manufacturers, users, constructors, designers, as well as operation, maintenance, and regulatory personnel.
What is it for?
Piping systems for gas transmission and distribution, including:
- gas pipelines
- gas compressor stations
- gas metering and regulating stations
- gas mains
- service lines up to the outlet of the customer's meter
- gathering pipelines, including offshore
- gas storage equipment and lines
When is it used?
As a companion to other ASME B31 codes, B31.8 regulates materials, design, fabrication, assembly, erection, testing, and inspection of piping systems to ensure compliance with safety measures and optimally reduce operational costs.
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