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MSS SP-148-2014 Low Pressure Flanged or Lugged Carbon Steel and Iron or Ductile Iron, Cast or Fabricated, Bonnetless, Knife Gate Valves without Liners
standard by Manufacturers Standardization Society, 2014
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SCOPE AND FIELD OF APPLICATION1.1 This Standard Practice covers carbon steel, iron or ductile iron, cast or fabricated, bonnetless, unlined knife gate valves with flanged or lugged ends from size NPS 2 (DN 50) through NPS 60 (DN 1500).
1.2 The valves identified in this Standard Practice are intended for use in applications where shock loadings are not encountered. Applications at conditions other than those specified in Section 3 require special design considerations.