The manufacturer’s Standardization Society (MSS) has recently published Standard Practice SP-141, “Multi-Turn and Check Valve Modifications”, which details standard procedures for the most common new valve modifications. As chairman of  MSS Committee 310, which created the document, I am pleased with it finally being published. Quite often our valve modification customers ask for specific modification procedures. This document will serve to meet that need for the majority of valve modifications. For further information on the document, visit the MSS website.