Mss Sp-99 Pdf

MSS SP-99 applies to valves, including but not limited to:

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is a standard from the Manufacturers Standardization Society (MSS) titled “Instrument Valves” (typically covering needle, gauge, and manifold valves for process instrumentation). MSS SP-99 applies to valves, including but not

The valve is pressurized until it fails or ruptures. The burst pressure must be recorded to ensure a sufficient safety factor relative to the CWP rating. 2. Acceptance Testing (Production Tests) Pressure Rating: Up to 15,000 psi at 100°F (38°C)

MSS SP-99 applies to small valves and manifold valves primarily used in instrument, control, and sampling piping systems. It is designed for valves with the following specifications: Nominal Pipe Size (NPS) 2 and smaller. Pressure Rating: Up to 15,000 psi at 100°F (38°C). Materials: Covers steel and alloy valves.

The valve is subjected to a pressure of two times its CWP rating for at least one minute. There must be no visible leakage at any pressure-containing part.