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ffl�'V�A <br />M?by»«: <br />a) Chlorine cylinders are to have a single chlorine Teflon style valve produced <br />Sherwood or Tekno which is equipped with a fusible metal plug -type relief <br />device. This is a must comply safety requirement. I <br />a) Chlorine ton containers are to have two identical Teflon style valves produced by <br />Sherwood or Tekno near the center Shone This is a must comply safety <br />requirement. When vertically aligned, the valve in the upperposon is usedfor <br />gas withdrawal, and the lower onefor liquid withdrawal. The standard ton <br />container valve is identical to the cylinder valve except that it has nofusible <br />metal type relief device, and the valve seat diameter may be larger than on most <br />cylindervalves, There are tow sizes ofton container valves: 314 inch NGT and I <br />inch NGT <br />a) Outlet threads on cylinder and ton containers are special straight threads <br />(1.030" - 14NGO-RH-EXT) which conform to connection nuumber GA 820 and <br />B20C which utilize a yoke -type connection. These threads are to accommodate <br />the outlet cap only and are not to be usedfor chlorine hose connections. <br />SKI= <br />a) The reliefdevice on chlorine cylinders is a fusible metalplug in the cylinder <br />valve located below the valve seat. Thefusible metal is cast into an 'Alloy "B" or <br />Alloy "A" holder which is screwed into a tapped hole in the valve body. The <br />fusible plugs are designed to melt between 158 degrees F and 165 degrees F <br />a) Ton container valves contain no fusible plugs. The container itself is equipped <br />with six threadedfusible plugs, three in each head, spaced approximately 1200 <br />apart. <br />3. Ton Container and Cylinder Inspection, Cleaning, and Reconditioning <br />a) In addition to the requiredperiod retest, it is recommended that each ton <br />container and cylinder be internally and externally inspected prior to each <br />filling This includes all appurtenances, such as valves andjusible plugs. <br />Criteriafor such inspection is outlined in "Cylinder and Ton container <br />Procedurefor Chlorine Packaging, " Chlorw.ine Institute Pamphlet 17, Sections 3, <br />4, and 5. <br />