Document N2vvMMK2pbMk31qdZ5YDBJoDD

When you want acid valves that will stay on the go .., Go National for Lead! In many process plants, lead has proved that it-is. first choice for making acid valves last. National Lead brings you lead's many advantages, engi neered into a complete line of valves. . Here are just a few of the types ready to help you fight acid corrosion: 1* "United" Typo R Valve. This "raany-purpose" valve features a split body and removable seat. As a result, it offers advantages unobtainable with valves whose body and seat are cast integrally. The split-body construction permits use as either a uXn or Angle pattern. All you do is reverse the position of the body section as shown in the illustration below. By standardizing on one valve with two uses you hold your supply stock to a minimum. Then, too, the removable seat and plug disc can be replaced easily at nominal cost. Final ly, seat and plug can be suplied in any: alloy or material you specify. For normal applications the valve Is available three standard ways: I. Lead plug disc and stem integral; 2. Re placeable lead plug disc; 3. -Replaceable rubber-and plug disc. 3 "United"TypeCTValve.The important difference bet type'and the "United" Chem-Rayon valve lies in the 'used for body and bonnet. In the Type C valve these of cast carbon steel or cast iron, heavily lined with lead. The body is cast oversize in order to allow a full flow after lining. All parts of the two valves are interchangeable. Available in both "Y" and Angle patterns. . 4* "United" Gate Pattern Valve. Here's a most ef&IUnt available with body and bonnet in hard lead, leadlined cast steel or lead-lined cast iron. It is designed to- provide full :area and unrestricted flow with minimum friction loss. The seat is hard lead, cast integrally with the body lining. This valve can be furnished -with disc made of acid-resisting rubber, takelite or. special alloys as required. You get1 a satisfactory seal at all times. i.,Wr#.also supply.check, foot and diaphragm valves "m;hard,lead;.cast iron, and- cast steel, lead-lined. One valve does twojobs! Reverse the position of the body sections, and the "United" Type R valve is changed from, an Angle pattern to a "I"" pattern. Available in hard lead or lead-lined cast iron or can steel. IZtM "United" Dhem-Rayon Valve, The body of this valve is eastward lead. Fins of the same metal reinforce and greatly increase tjie strength of body and flanges, while holding weight to a minimum. The stuffing box is of exceptional depth. Pack ing can be replaced under pressure. Steel, and bronze bonnet are completely covered (except wheel and bushing) with hard lead. Manufac tured in both "Y" and Angle desigp'wAvailable with removable plug discs of rubber"dr lead. National for Lead - -,... pipe , . . valves . , . sheet.. . lead-lined or lead-covered . - equipment . - . even complete add recovery plants. Behind every National Lead recommendation, every National Lead - product, are years-of experience and many important installa- ` lions id every field handling corrosive liquids and gases. . NATIONAL LEAD COMPANYfg I f,11:1 BROADWAY. HEW -YORK B, N. Y. ?;V' '.'.^Offices and Ptamsin Principal Cities and Canada KL-HQ82--Chemical Engineering, February ,and June--Steel, February 9--Iron Age,March 4--Petroleum Refiner, February and June-- .Textile World, February and June, 1948 1c ' 0000-NLMM015958 Acid When installing acid pipe lim free service, go for a^aterial; Go National fot: Viad) Lead has proved itself the resisting material for acid Lead gives you all of lead's adv - into acid pipe and fittings that or fluctuating temperatures, pressure, yaejium and vibration. * ' v'' . .' Here are three types ready to help you. fight acid corrosion and mechanical stress: 1 flfl-Lead Pipe; National's Chemical Lead Pipe is widely used throughout industry. Of practically pure lead, substan tially free of bismuth, it contains a small amount of copper, which boosts corrosion resistance and endurance limit. The extrusion process used in fabricating this pipe assures uniform wall thick ness, free flow, and freedom from porous or defective All industry Icnows'ikfdepend-' ' ability of lead for jlaid handling.' Hare are Chemical. Lead" Pipe This is oar regular lead pipe. "standard" in nany industries- Other useful types'are.: s by alloying small imounCs of other metals with chemical lead. . For example, our Tellurium Lead Pipe gives'you extra jcOrro-' e athigh temperatures ... greaterterisile strength . .,. higher endurance to vibratory stress. Or, -if you need extra resistance s erosion, tKere's/ai^o our Anrimonial Lead Pipe. This la made with a base of either Chemical or Tellurium Lead. By adding 6% of antimony, tensile strength is almost doubled,ahef hardnesa and stiffness.are greatly increased. 2 Cold Expanded Lead-Lined Pipe; Here's leadpipe 3 plus the strength of iron or steel: It's our "tfnited" Lead-lined Cast Iron or Steel Pipe. Outside you have all.the strength needed to stand .-pressure or other mechanical stress; inside, the ability ,to re sist corrosion. - . LedcPs-corrosion resistance plus the strength of steell t ' ' "United."-Ufa-lined. Pipe brings you both. ing is formed in continuous lengths of seamless pipe, then cold-expanded against the inride of the iron of steel tube. ,J- ' `aright fit and a smooth, uniform lining, free of defects, tl steel pipe used meets lASTM standards. 3 ``Ui^ila^tiond" Lead-Lined Pipe: For handling corrosive liq uids or gas'es iLt; extremes of temperature, pressure, vacuum or vibration, we recommend our "United Tubond" Lead-lined Pipe. This is steel of wrought iron pipe with its lead lining permanently bonded, io the ferrous metal. No separation or creep is possible. Tej.Wghue5S of the bond is demonstrated by the illustration below. ; All our lead-lined pipe is available in flanged sections, with the lead-liniiig carried the face of the recessed flange .This insures a positive Iead-to- leadi seal at tech flange,. ... eliminating any. leakage1 -at joints. ' mpth* ,, Eoeri- severe twisting can't break the bpnd. ( national Io* Lead . . . pipe .. ttallies . .. sheet. . . lead-lined or lead-covered equipment . .. even complete acid recovery plants. Behind tvery National Lead recommendation, every National Lead produce, are years oj experience and many important installa tions in curry field handling corrosive liquids and gases- NATIONAL LEAD COMPANY 111 BROADWAY, HEW YORK 6, K. Y. Offices and Plants in Principal Cities and Canada 0000-NL1-000015959 N 29259.01 KL-5084--Chemical Engineering, March and September--Steel, April 5--Iron Age, May 6--Petroleim Refiner, March and September-- Textile World, March and October, 2948 ir . 1' 4 * - wK^^a^^IrV.' ^^**5*^ ??* * ''' * ; *1 ' E$'. ).':* ' Hi1 :- ; 4. -- i LeaH^ ^jj for Acid Equipment "O'-. Whenever acid corrosion is further complicated' by extreme conditions of pressure, temperature or other physical problems... go for equipment that can handle these extrajobs. Go for National Lead's. . - TT. ``Homogeneous" Lead-lined or Lead-covered .' V Equipment You get all of lead's many advantages, pln tional Lead's permanent "Homogeneous* Here are three reasons why "Homoget inent makes acid-handling less of high temperatures isn't the whole story either! ineoiis" bond holds fast even when subjected to in temperature. of the "Homogeneous" processing equipment produced by is designed for service at elevated temperatures, 'dead-lined tanks, autoclaves and the^like, agitators,' propellers and/mixing devices 1> A Bond that's Permanent!. National Lead's ` Lead-lined Equipment gives you an inseparable _ lining (or covering) is permanently bonded to the steel,'copper or brass of which the apparatus is constructed. The "Homogeneous" process of bonding is your assurance that the lead will not creep, buckle, or separate. . Shock, vibration, full vacuum, high tem perature orpressure, will not break the hood. Rugged "Homogeneous" equipment cuts down costly replacements and even more costly shutdowns. Repeatedly, it. has proved itself a sound, profitable investment. Bonded for Life. If yon clamp a strip of our ~`Homogeneattf` leadbonded steel in a visq, you can twist it until the steel fractures-.But i there'll be no parting of the two metals. The bond is inseparable!..r. \ Designed to Order! .As acid-handling problems differ, equipment must he designed for each given set of conditions. Every . piece of National Lead's "Homogeneous" Lead-lined or Lead' n / covered Equipment is individually fabricated to your speciQr fications. This results.in efficient^ cost' <5- cutting apparatus. ; OurEngineeringDepartment Or offers full cooperation m.yonr v t .-fight-against acid-corrosion. j-| .* We will- gladly offer sugges- \N^i. . tionsion the'most economical, v ,r--, r ...and satisfactory..way for you to ::A-^vJ^rv-^sefhe protection of-lead.--... v 2 Endurance at High Temperatures! There's no tin or tin- lead solder used in the bonding of "Homo geneous" equipment. Yon can use this equip ment safely attemperatures closely approach ing the melting point of lead itself (621F.). 1i Heating or Cooling? uHomogeneous" leadcovered copper coils do both fobs well, through out industry. I) National for Lead . pipe . valves , sheet_____ ________________ -i .-.^.-equipment ^-.evert- complete acid recovery plants. ^ ^.iiperyj- National:. Lead'.recommendation, every National . : *ipro.d.tict, -.are 'years-of experience and many important ` . -.lions in every- field handling corrosive liquids end gases. NATIONAL LEAP,COMPANY ' i t.OR^^WAY,. HE\ YORK -8, H. Y. Offices and Plants in Principal Cities aid Canada emical Engineering, April and 6 title World, April and Noveirtb'efj 194 ter, April-and October o o o o -n u -000015960 N 29259.02 ..-.y.'i  Lead Acid Linings When you want to line acid tanks.; equipment exposed to c ...go for trie&and-true 'or Lead/ Lead resists acid...is easily to irregular contours... form continuous, corros National Lead brings you diffe to suit your conditions. Here sn- the, throe' types: 3 Antlmonlal Lead: This is made from either Chemical or Tel lurium Lead by alloying with small amounts of antimony to semire greater tensile-and mechanical strength. 6% of antimony atfcfefTto Chemical Lead almost doubles its tensile strength. This, ; plus greater stiffness, makes Antimonial Lead suitable . : 3, Chemical Lead; This is a practically pure free from bismuth and containing a stnaU' jut'lxf wppZvM?;, which boosts corrosion resistance and endurance limit ft.ha"'''', been used so successfully throughout indostry-that it is accepted ^ as the standardised for add-han dling. The othoi' types o! lead. for industrial ` .use1-;' ateflilSimply : Chemical Lead alloyed" with mtying quantitiesrilof als to meet special [seirWiMhe^;1 - 6 16 6 b ;herd?mechanzcal strain is ^ dr-where linings are ':agp&Tted 'only by a skeleton 'frafife^ork.- " . '^AitHjiidnial -Lead also is harceri:and more' resistant to abrasion - add cutting. It's a good'bet wherever erosion or physical abase exists. How ever, 'as antimony lowers the melting point, we do not rec ommend Aptimonial Lead for use above 240 F, Vacuum processing demands a strong, stiff lead. That's why Anti- A ' menial Lead forms tke'large "crocket pipe" (center) of this partly assembled evaporator for coke by-products. Lead also lines the interior 2o Tellurium Lead: This is Chemical Lead t-01 which jhss. been 6 of the evaporator. added a small amount of tellurium. You get fall ofl^d'^jjregular advantages- plus others needed for specific: jtshsj^Forilie^nple: one added featureof Tellurium Lead is its iis:creafled;:crtrhpsi<ih resistance at high temperatures. 6 i National for Lead Another is its -ability, to work- harden. Mechanical stress,- such as bending, stretchingor hammering, actually increases Tellurium Lead's tensile strength and resistance to : fracture. . .'.pipe-.. r valves ... sheet. . . lead-lined or lead-covered equipment. . .' <we_ complete add recovery plants. Behind every National L&~recommendation; every Notional Lead-., product, are years of experience and many important installa tions in every field handling corrosive liquids and gases- Use-of Tellurium Lead is recordmended where you hare to fight; hath stress and corrosion. NATIONAL LEAD COMPANY 111 BROADWAY, KEW YORK 6, N. Y. 0000-NU-000015961 a stresses won't vicahcjv Tc L<pd.: Here, it's used as a protective covering on rayori spihnirig^Jftiachihes. Offices and Plants in Principal Cities and N 29259.03 KL-5094-Cbemicd BEnngineering, Afy anid^^^^tfieir^teel, September 6--Iron Age, October 14~Petroleam Refiner, May and November-- T,,e..x..t..i.le....W. torU MaymiDecembM$4$ * ^ t