MSS SP-126 - 2007 Steel In-Line Spring-Assisted Center Guided Check Valves

This Standard Practice covers in-line, center guided, internally spring-assisted type check valves made of steel, or other alloys listed in Table 1 of ASME B
16.34. These valves, having the feature of limiting fluid flow to one direction only, are intended for use with clean fluids (i.e. fluids that contain no solids).