1.1 This Standard Practice covers all stainless-steel or stainless-steel lined, cast or fabricated bonnetless,flanged knife gate valves in NPS 2 (DN 50) through NPS 36 (DN 900).
1.2 The valves identified in this Standard Practice are intended for use in applications where shock loadings are notencountered. Applications at conditions other than those specified in Section 3 require special design considerations.