Document NEQvGEyRa4ZMOegOmKdX9vooD

it$S \ In addition to th low /y jT noBAlt\ torero gnd 2.c<oyiillnodf<thf N# oIr,dJ, berg "4FS'' tsrls* Dioml onglnof, Iht outstanding dtiign pnd construction ol thorn compact unit! aiiuroi safrsmsty low fwol and Ivbo oil Consumption... which ha i boon proved in a wide range of power |obt. *~^g y Hero ore the "okinrntlS' \ *,0" Ihol ore alt V IncWed In the low Initial coit of Nord- berg Oletel wnltn thermostatically con* trailed cooling system -- heavy duly ail both air deanor -- lube all cooler -- fuel and lube oil lllter*. Compare before you buy any 10 to 45 hp engine. like oil Notdberg Diesels, the ,?4f$" terle* engine* ore (lurdily built to give year* ol reliable service with .a mini mum ol maintenance time and expense. Clip ih coupon lor dciell* on Nordbcrji Di**l power wnin Iron tOio 41 hp--Dteic) normor unit* from 6 to )0 kw--or for Diet*) pumping unlu in cep*ciiii from 200 to 5000 gpm ( if to 240 ft. soisl head. NOIDOitO MIG. CO.. Milwaukee. Wli. e | Nwdberg Mlg. Co.. Milwaukee, Wl*. I lend celetep revering Mordherg Type | 4fS Dletell. I an Intereiled In a volt | (or (he lellewing ttnlai m | Yeur Npae................................................... I Company Home......................................... Addran................................................. I Gty.......................lone.... Stole. . | 4.IU WATER TREATMENT tram page 101 with calcium or magnesium. To fore stall this development, you need still higher alkalinitie*. Moreover, the great er the feedwater silica ' content, the stronger must be the bolter writer's caustic alkalinity, to safely retain silica in the (orm of soluble sodium silicate. Alkalinity Restrain!. It follows that the more elevated bailer-water slkolin- . lines become, the more effective treat ment is. However, there Is a limit to the degree of alkalinity each specific boiler deilgn can sustoln and yet furnish good-purity steom. Sudden surges in boiler-water causticity can cause vio lent priming. And persistently high alkalinity concentrations will Induce continual carryover of boiler-weter solids with the steam. Steam-purifying links are inefficient under such burden- some demands. In s watertube packaged unit olkalinides, yielding a maximum pH valde of 11.5, can be carried with a moderate measure of safety. Conse quently, boiler-water slksUnitlee with in the pH range of 10.5 to 11.5 assure (1) driving down the calcium hardness 1Uh-Tv entirely as the desired phosphate (2) removing magnesium hardness com pletely in the hydroxide form, while (3) still keeping silica soluble. Imbrittlement Prevention. Certain tannin derivatives offer protection 411 against intercrystsliine cracking of boiler metal besides functioning as an Regardless of the temperatures or pre*-V effective coagulant for hardness pre urea Involved... no matter what tht cipitates. Furthermore, the surplus of lading... your equipment oainteosace^ phosphate carried to ensure tero hard- costs can benefit from longer, more de ness also serves as on added inhibitor, pendable packing life. If you're Pyi*-j;` so normally you need not add more for the best--and you probably are-vV ehemlcals. make sure you get it by specifying:/: Blowdown. You can't precipitate any ! BELMONT Packiogi In fornroUtloorv amount of hardness nor hold any quan- I suited to your particular needstity of silica in solution within any | Don't make do with the (text best-fwki j-/.| boiler. There are definite limits whether on BELMONT... available lo a wide .'1 or net internal water treatment does a range of moterials... hundreds ofy satisfactory job alone, and much of the styles and types... through distributors^ success relies Heavily on the demand everywhere. ' ?> a selected water treatment places on blowdown. Rate of blowdown. In turn, is governed primarily by the maximum total solids eontent permissible at your particular operating preasure. Feedwater chemical characteristics and the boiler pressure may combine to cause For technical assistance on packlog/ specifications! write direct -- ask for,v Catalog #40 or detail your particular*:; problems. uui .V', for Steam Water Oil Got *|$|L fields Alkalies foaming and carryover or undesirable deposits that you cannot prevent with out excessive blowdown. In this event, BELMONT exlernol presoftening and silica reduc tion become a necessity. For watertube packaged boilers, schedule a minimum ol two sludge PACKING AND RUBBER CO. Butter and Scpvivo Streets Philadelphia 37, Ptmnsylvonio blows per unit per day. Make It a daily practice, even if such bjowa arc to be mere puffs. Give one blow in early morning and the other in late afterI noon during comparatively light loads Ring* - ipirafi <oifs flee*4 l pooh Sheet* Coskr.ts t/rcfe'j o Balmont Pocking torev<?'tP'*'(f educe Maintenance ECONOMIZER#' 1. AUSTEEl Superstructure. 2. Bolted packing box. 3. Forged fabricated bonnets and blind hoods. 4. Through-bolted bonnets and blind heads. 5. Stainless steel spring stem. 6. Oiflte Bearings, frlctlon-free. 7. The "DAHL SEAL"-a frle- tlonless Valve Stem Seal -- of Teflon. B. Metallic Bellows Seals of Stainless Steel, Monel, Nickel and Hasfelloy. `IL n -D HAMMEL-DAHL COMPANY I 7 5 POST ROAD, (WARWICK I PROVIDENCE 5, R. I-, U. S, A. SALES OFFICES IN All PRINCIPAL CITIES MANUFACTURING PLANTS IN WARWICK, R. I., U. S. A., CANADA, ENGLAND. FRANCE ANO HQLIAND 216 K>WU MCW - decembek wj