EQUIPMENT HEAD IN FT. 300r
Centrifugal PumpsThese Sizes May Become Standard
250-
Solid Lines: 3 5 0 0 r.p.m.
Broken Lines : 1750 r.p.m. η 50 r.p.m.
ZOO-
Pump No.
150^-
IO0l·
50
100 500 U.S. GALLONS PER M I N U T E
IO00
Pump Standards Are in Sight ASA committee expected to approve standards for centrifugal pumps used in chemical industry Ν
EXT
MONTH,
sectional
committee
B-73 of the American Standards Asso ciation is expected to approve a set of voluntary recommended standards for single stage centrifugal pumps used by the chemical industry. More hashingover will be needed before these stand ards are adopted b y ASA. But a set of standards for such pumps seems a t this point to be definitely in the cards. Specifically, the recommended stand ards cover " . . . horizontal, end suc tion, single stage centrifugal pumps, in cluding baseplates, suitable for use in the chemical industry . . . " Approxi mate capacity range is 5 to 10OO gal lons per minute, operating tempera tures up to 500° F . Discharge heads should not exceed those specified for American Standard 150 l b . (steel) flange. Any suitable material of con struction may be used. 58
C&EN
J A N . 2 0, 1 9 5 8
After expected approval b y the full ASA sectional committee, final recom mendations will go to ASA f o r action. ASA will process them in its usual manner and, if all goes w e l ^ will estab lish them officially. • Economy Needed. Behind this project lies the need for more economy in production, a need which h a s grown more pressing since t h e program first started. Annual reports from company after company in the chemical process industries these days mention the high, still rising cost of production. And some estimates say that a set of volun tary standards for the kind of p u m p at hand might save the industry as much as $7 million a year. Individual surveys b y a n u m b e r of member firms of the Manufacturing Chemists' Association got d i e present program under way. Some firms found
I 11 111 IV V VI VI! VIII IX X XI XII XII XIII XIII
Des/gn Speed
Size {Inches)
1 1V4 2 2 3 3 4 6 2 3 4 6 6 6 6
X X X X X X X X X X X X X X X
1 1 VA VA 2 2 3 4
VA 2 3 4 4 4 4
3500 3500 3500 1750 3500 1750 1750 1750 3500 3500 3500 3500 1750 1750 1150
they were using as many as 3000 dif ferent p u m p s . T h e result was a huge, expensive inventory of p u m p s a n d spare parts. Nevertheless, the firms involved decided they could not do a great deal of good b y standardizing on an individual basis. An industry-wide approach was needed. I n 1954, t h e Chemical Industry Ad visory Board of ASA appointed a com mittee from the chemical industry to study t h e worth of t h e project. More affirmative steps followed, and a gen eral conference of interested parties took place at ASA headquarters in April 1955. MCA and t h e Hydraulic Institute were invited to sponsor t h e project u n d e r ASA procedures. Four subcommittees of B-73 went to work on t h e details of standardization. Their job: • Develop boundary dimensions for chemical pumps. • Develop optimum number of pump standards t o cover t h e range of 5 to 1000 gallons per minute. • Consider standard arrangements and standard baseplates.
How
cleanliness p r e v e n t
s
Cleanliness removes the cause of dermatitis — prevents prolonged contact with chemicals, oils, abrasive dust and other skin hazards. Trie preventive cure? Prompt efficient cleansing in combination with safety aids that prevent contact. This simple concept is the basis for the highly successful West Program of Dermatitis Prevention and Control. How does it work? No contributing source of dermatitis is overlooked. Specially formulated hand cleaners insure safe, effective cleansing. Antiseptic protective creams help protect exposed skin areas. "Vinylite" aprons and armguards prevent clothing contamination. Other specialties protect against bacterial infections. The West Program of Dermatitis Prevention and Control is an inexpensive way tQ eliminate the needless penalties and costs of dermatitis. Why not discuss it with one of our specialists? His recommendations will be tailored to your needs. J u s t send t h e coupon. Or call your local West Office.
PfOcTdms .ιπ.·ι r...-" ..^tn.4'·. i:-r W E S T C H E M I C A L P R O D U C T S I N C . , 4 2 - 1 6 W e s t S t r e e t . L o n g I s l a n d C i t y 1 , Ν. Υ. B r a n c h e s in p r i n c i p a l c i t i e s · In C a n a d a : 5 6 2 1 - 2 3 C a s g r a i n A v e . , M o n t r e a l L J P l e a s e s e n d y o u r 24 p a g e b o o k l e t , " T h e C o n t r o l o f D e r m a t i t i s i n
Τ
CHEMICAL PRODUCTS INC.
Π
Please have a W e s t R e p r e s e n t a t i v e t e l e p h o n e for an
Ν a me Position-
WEST
DISINFECTING
DIVISION
Industry."
appointment.
, M a i l t h i s c o u p o n w i t h y o u r l e t t e i h e a d to D e p t . 2 0
JAN.
2 0,
1958
C&EN
59
14 basic chemicals you can BUY FROM
F O R M A L D E H Y D E
— An important r a w material in the manufacture of resins, adhesives, textiles,
a n d numerous other products. It is marketed by RCI in five different concentrations. * G T J Y C E R I N E manufacture of synthetic resins, pharmaceuticals, cosmetics, food products and as a humectant.
feather, rubber — Used in the
*HYDRCDCEEXJORXC
A C I D — Has wide application in the chemical industry for pickling and cleaning metals, processing textiles, refining ores and in the manufacture of chemicals generally.
M A L E Ï C
A N H Y D R I D E
— Principally used in the manufacture of
synthetic resins, polyesters, synthetic drying oils, and related products. Its highly reactive structure lends to the synthesis of complex organic chemicals by the Diels-Alder Process. I V I E T H A J N T O L — A widely used solvent and chemical intermediate for the manufacture of formaldehyde, rocket fuels, amines and esters. O R X H O
]PMII!N!fLlPKEiNOL*
tive fungicide a n d bactericide used in many industrial applications for outstanding preservation.
—A v e r y effec-
P E N T ^ C H L O R O -
I P H E M O L — Used in various fungicides, bactericides, algicides and herbicides; in agriculture, lumber, goulp a n d paper applications. S O D I U M
F E N T A C H L O R O I P H E N O L ·
— The H 2 0 soluble salt of penta used to prevent microbio-
logical attack on many organic substances such as wood, adhesives, protein materials. I ? E 1SJΆ A E R T Y T Ï - 2 . R Î T O L — Used primarily in the manufacture of alkyd resins. Imparts better film properties such as high gloss and gloss retention, good durability, faster drying. Used also in ester gums and synthetic drying aids. P H E N O L
_ A buildî ng block in the
plastics industry. Also widely used in the intermediates required for the production of synthetic detergents., lubricating oil additives, insecticides, bactericides and pharmaceuticals. P H T H Â L I C
A N H Y D R I D E
_ Used extensively in the
manufacture of alkyd resins, plasticizers, organic pigments and dyestuffs, and pharmaceuticals, as well asoth*erfine chemical intermediates. * S E J B A C X C
A C I D — Sebacic acid esters are finding increased usage as plasticizers for R V C systems and
as safe, non-flammable jet engine lubricants. S O D I U M
S U L F I T E _ Primarily used by the paper- industry in the
manufacture of kraft paper and fiber board by the semi-chemical hard wood process. * S U L F U R I C
A C H D — A basic
commodity used in the paper, dye a n d pigment, textile, fertilizer a n d organic chemical industries.
* Production
for 1958
committed.
Get tougher, more flexible polymers through REICHHOLD CHEMICALS,
60
C&EN
J A N . 2 0. 1 9 5 8
I N C . , RCI B U I L D I N G ,
WHITE
P L A I N S , Ν. Υ.
1
'
your Partner- in Progress
EQUIPMENT • Establish design standards for shaft sizes. • Establish standard dimensions in the stuffing box area. • Develop a list of essential and desirable features for a standard chemical pump. • Develop standard definitions, nomenclature, and letter designations for centrifugal pumps and component parts. A few points remain to b e thrashed out a m o n g the standards worked out within this framework. But the subcommittees have reached basic a g r e ^ ment on essentially all of the standaids they set out to develop. With sectional committee B-73 expected to approve their recommendations, official standards for the kind of centrifugal p u m p at hand seem subject only to ASA's final approval. This may come in late spring or early summer.
tubes and gives precise control of speed, says Precision. It's 22 in. in diameter and .14 in. high. Ε4 • Model F combustible gas a n a l y z e r ,
announced by Mine Safety Appliances, includes two significant developments, MSA says: an extremely long-lived fila ment (the sensing element) a n d a re mote analyzing head with explosion proof housing. Unit is designed to sample and measure combustible gases and vapors, mixed with air, either in termittently or continuously. Ε5 • Rotary v a n e c o m p r e s s o r s being made by Waukee Engineering come in sizes from 400 to 6000 cu. ft. per hr. at from 1 to 3 p.s.i. T h e new line features a built-in automatic bypass regulator
which maintains pre-set delivery pres sures at varying outputs. Έ6 • Submersible motor, designed Tor close coupling to agitators or pumps in sewage sumps, chemicals, water, and abrasive industrial oils, has been de veloped by Louis Allis Co. The motor is flange-mounted, is available in ratings of from 3 / 4 to 40 hp., both single and polyphase. Ε7 • Air monitor measures both alpha and beta-gamma activity of airborne par ticulates simultaneously as they are col lected. The new unit can operate con tinuously without attendance for as long as a month, says Nuclear Measure ments Corp., the maker. Basic detector is a gas flow proportional counter with a Mylar window. Ε8
January 2 0 , 1958
Get tougher, more flexible polymers through • Îlastomer-lined
centrifugal
pumps
Use this h a n d y self m a i l e r to o b t a i n further information or literature.
are offered by Ampco Metal in eight capacities, ranging from 30 to 200 gal. per min. Linings are natural rubber, neoprene, and Hypalon. These lowhead p u m p s are designed to replace special p u m p s made of costly or dangerously fragile alloys. Ε1 • High-capacity automatic bypass v a l v e is now made b y Watts Regulator. The all-bronze valve is available in 3 / 4 and 1-in. sizes for pressures from 10 to 250 p.s.i. It's designed to regulate liquid pressure as supplied by pressure pumps. Ε2
Simply mark, clip coupon, fold, and mail Every w e e k C&EN's editors survey a large volume o f valuable scien tific, technical, a n d business information issued in fhe form o f product announcements, booklets, catalogs, d a t a sheets, etc. This material is digested and presented in several departments. For your conven ience this coupon is provided t o facilitate requests for further informa tion on these items as w e l l as on products and services mentioned in advertisements.
si 0 Ωέ
I
Name_
-Position-
Company.
Get ougher, more flexible polymers through Street
Gty-
.Zone-
-State-
(Please print or type)
• Plastic transparent filters are n o w
offered b y Ion Exchange Products. These cartridge-type filters can handle water, air, drugs, photographic solu tions at pressures up to 100 p.s.i. The four sizes available have flow rates of 2, 4, 8, a n d 12 gal. p e r min. E3 • Table model centrifuge, introduced by Precision Scientific, operates at any selected speed up to 2250 r.p.m. It can handle from 0.5- to 100-ml. test
•
CLIP C O U P O N — F o l d A l o n g This Line—Fasten (Staple, T a p e , G l u e ) — M A I L
3 c STAMP
To: Readers' information Service Chemical and Engineering News
I |
!
F u r t h e r useful i n f o r m a t i o n on k e y e d Equipment items ment i o n e d is r e a d i l y a v a i l a b l e . . .
| I I
Use handy coupon on page 62
j
„
^
4 3 0 Park Avenue N e w York 2 2 , Ν. Υ.
ι FASTEN HERE
ONLY
^
4i FASTEN HERE O N L Y
