| | -free service from vacuum to positive pressure. Featured Products (see page 14) ... A167 (Silver plated) Specifications Pressure Ratings are based upon tests conducted ... with calculations per ANSI Code for Pressure Piping B31.3. Working Pressures are ... a 4 to 1 design factor. To determine pressure ratings in accordance with ANSI B31.1, ... multiply Working Pressure by 0.94. Temperature Ratings ...
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