... " metal wire, NRC91 or 10% tungsten, 90% tantalum alloy Tantaloy Inlet Spring is made of tantaloy "61" metal wire, NRC91 or ... warranteed main regulating spring in the vacuum regulator, tantallum alloy inlet valve springs and ejector spring in chlorine control valve of ... exchangers, condensers, reaction vessels, leaf springs and bellows. Tantalum spring Inlet Spring For Gas Chlorinators