Determined to learn more, Emma began to dig deeper into the mystery of MSS SP99. She scoured the archives for more information, talked to colleagues and experts in the field, and even attempted to track down Dr. Lee himself.
stands for the Manufacturers Standardization Society (MSS) Standard Practice titled "Instrument Valves." mss sp99 pdf
ASME B16.34 covers large industrial valves (gate, globe, ball). (≤ 2 inches, high pressure, fine control). Do not use SP-99 for a 12-inch main steam isolation valve. Determined to learn more, Emma began to dig
The standard covers qualification tests (hydrostatic proof and burst) and acceptance tests. ball). (≤ 2 inches
: The standard outlines the materials acceptable for valve construction, considering the compatibility of materials with the process fluid and the operational environment.
Covers ratings up to 15,000 psi (103.4 MPa) at a reference temperature of 100°F (38°C).