Mss Sp-99 Pdf Link

Every production valve must pass individual acceptance tests before leaving the factory:

To comply with MSS SP-99, manufacturers must clearly mark each valve with essential data, including the manufacturer’s identification, model number, flow direction (if applicable), and material grade. mss sp-99 pdf

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) Every production valve must pass individual acceptance tests