Technical regulations and scope of application for valves according to the MSS SP-78 standard
This regulatory document establishes strict requirements for the design, manufacturing, and quality control of plug valves made of gray cast iron. The standard applies to shut-off valves equipped with both flanged and threaded connection elements for pipeline systems.
The technological parameters presented in the specification cover a wide range of nominal diameters and pressure-temperature classes, allowing this equipment to be used in various general-purpose industrial engineering networks. EV Group China specialists ensure the compliance of supplied products with all points of this standard.
The documentation contains comprehensive information on the following aspects:
- Standards for the chemical composition of casting alloys.
- Mechanical properties of materials, ensuring durability during operation.
- Geometric tolerances and standardized dimensions of connecting ends, ensuring tightness and ease of installation within assemblies.
When selecting shut-off valves compliant with MSS SP-78, EV Group China engineers recommend considering the operating environment and temperature limitations of gray cast iron as set forth in the requirements of this industry standard.