Manufacturers Standardization Society 127 Park St NE, Vienna, VA 22180, United States +17032816613 https://msshq.org/page/SP42 https://maps.app.goo.gl/cvoU1z9PzMJAESuZ6 The MSS SP-42-2013 standard establishes the requirements for corrosion-resistant gate, globe, angle, and check valves with flanged or butt weld ends in pressure classes 1… Read More