Document pBqaqyZZmkRz7yOnGw5Z883e7

I \ facts you should know About the 1948 STEEL VALVE Outlook UN ANNUAL REPORT ,0 sun run users A vear before tbc war Btorted, stoel valves became difficult to obtain. One of tho most critical wartimo industrial commodities, steel valves have been re quired in large quantities for postwar construction ^'wbat is tho situation now? How about prices, deliveries, new design developments? These are our observations. . . 3 Cutaway of an angle gear driving head for a vsrtleal-ahaft turbine deepwell g 8lng1e-suctlon eemlopen Impetlcf pump. The power unit eonneete to the horizontal theft In two ball bearings w which has a shroud on top ontj ' LITTLE increase in valve prices The steel valve industry has done its share in keeping prices down. Edward selling prices, for example, are now on tho overage only about 10 per cent above those in effect before Pearl Harbor. It is hard to think of any durable goods industry which today serves the buyer on such a favorable price-value Wi Steel valves are real bargains--they don't hold up construction programs because of high cost. they are widely used In wei-pii and closed-suction systems. Drivers are mounted on the vertical axis of the pump, Fig. 1 and 2, minimizing space requirements. These pumps usually are installed with the impellers submerged, so that no priming is required, end suction problems are simplified, or prac tically etiminoied. Q 4--How are these pumps driven? A--By eleciric motors, sleam tur bines or engines. Direct-drive vertical motors, Fig. 1 and 2, may have either hollow or solid shafts. Vertical-shah turbines in a limited horsepower range are also used. Power from horliontalshaft prime movers is transmitted through dal belt, multi-V belts, or rightangle gear drives directly coupled to the pump's vertical shaft Q 6--Whet Is fho performance range of these pumptf A--Capacities vary from about 25 to 15,000 gpm or larger, for discharge heads up to about 1000 ft Q- 6--Whnt are the itrucinret elements of these pump*? A--A vertical-turbine pump contains three major assemblies, bowl B, column C, end driving head ft. Q 7---What ttandard eontirvcilon variations are available? A--Discharge opening may be obove or below the foundation elevation. Lineshafts may be open to aod lubricated by the liquid being pumped, Fig.' 1, or enclosed in a tube and provided with lubrication from an outside source. Fig. 2. 0 8--How era pump rises fitted? A--Since these pumps were originally designed for installation in wells, their site is usually stated in that of the well casing in which the pump can be In stalled. For example, a 6-in. pump has an outside diameter ol about 5Vb In. and will go into a 6-in. well casing. An (Fin. pump is about 7^-in. OD and is intended to be installed in an 6-in. well casing. Q 9--IPhat Is the bawl assembly? A--II is the pumping element B of a vertical-turbine pump. Fig. 1 and 2. It contains the suction case, impellers, intermediate bowls and a discharge connection arranged for coupling the bow] assembly to the discharge column C. This assembly Is sometimes ealled the working barrel or impeller section. Staging is done by increasing pump- shaft length and adding the requited number of duplicate Intermediate bovb and impellers. * Q 10--IFhat It the suction case? A--This is thfc pump's inlet S, Fig I and 2. It guides the liquid at corretf velocities to the eye of the first-sisp impeller. The suction esse contain straight vanes, which prevent prerotition of the liquid and support the bett ing housing A of the bottom pumpshsh bearing. This bearing may be greats packed or lubricated by the liquid bo ing pumped. Q 11--Who! are the IntermedJaU bowht A--These are castings, Fig 1 and l with diffusion vanes V, which guide liq uid flow from one impeller's dlachirp to the suction of the next. Each boi baa bearings lo support the pumpahtfl These bearings ore lubricated by tbs liquid pumped. Q lZ--B7hal types of column astern* btlav era utad? A--They may have either threaded or flanged joints. This pipe conned* the bowls to the driving head and serve* as the dischorge pipe. It It usually fur nished in lengths of about 10 ft. Line IM (42) POWER January !* DELIVERIES IMPROVING, BUT- Deliveries of Edward valves, on the whole, are considerably better than they were a year ago. Most small forged steel valves are obtainable from stock or upon short delivery. Larger steel valves, however, continue to require fairly Tong lead times and undoubtedly that will be the case for all of 1948. Expansion commitments of the steam generating, petroleum and process in dustries aro such that there ia little possibility that deliveries can be shortened very much on steel val ves in sizes above six inches, particularly in the higher pressure and temperature series, until well into 1949. It is therefore still wise to place steel valve orders as far in advance as possible. ONE WAV TO COT INVENTORIES Most businesses are greatly concerned about mount>ng inventories. Among the several causes for inaeased inventories, we think, is the buying of specials." Take the case of valves: standard valves with a high degree of interchangeability require the stocking of very few repair parts; non-standard valves wi th trick attachments mean extra i nventories for repairs and delays in receiving emergency ^placements. The steel valve industry today has a complete ' me of standard valves suitable for fully 99 out of 100 installations. For better deliveries, lower cost, known performance and smaller inventories,''stick to the standard. ?OW* January 1946 NEW DESIGNS FOR NEW SERVICES There is, as we said, a standard valve for virtually every service today. That is another way of saying that the valve industry has kept up with the tech nological advancements of the power, petroleum, and the varied process industries. For instance, take Edward. Each new Edward catalog has listed basically new valves for higher pressures and temperatures. During the past year, Edward continued to improve its original designs for pressure Bealed valve bonnets, welded bodybonnet valvo joints, closing mechanisms, seating systems, etc. Not all the advancement is confined to specific valve designs, either. For instance, the continuing research of the Edward laboratories into the char acteristics of flow and the economics of pressure loss has not only led to the development of the Edward Equalizer for increasing flow through valves, but also has been widely heralded as a contribution to the knowledge of the fundamentals of flow through pipes. Edward engineers have shared their findings and experience with others interested in the same problem. MEN AT WORK As a unit of the Rockwell Manufacturing Company, Edward has access to the combined facilities of the other Rockwell plants in all parts of the United States. This permits more economical manufacturing, an even greater research program, fewer headaches in obtaining materials and equipment which continue in short supply--in other words, more men and minds at work on a common objective. And right here at the Edward plant, employment is at an all-time high. Almost all the experienced Edward personnel thatleftfor war service came back, and many new men and women have been trained. In 1947 expenditures for Edward production facilities also reached an all-time high, exceeding even our big wartime expansion programs. Consequently we sincerely feel that we are in the best position ever to take care of your steel valve requirements in pressures from 150 psi up, in sizes from % in. to 16 in., for all temperatures, and for boiler* room, petroleum, industrial, marine or technological service. (^.F.cxJia i Preessuident SUQJID1AH OF lOCMll MANUFACTURING CO.' EAST CHICAGO. INDIANA*r ' 107