double light-beam filter photometer for continuous measurement of free, com bined, or total residual chlorine in water or sewage. Dept. IEC, Fischer & Porter Co., 789 Jacksonville Rd., Hatboro. Pa. 67 Flowmeters. Variable area flowmeter handbook gives basic engineering data including tables, graphs, and equations for application, sizing, and flow rate calibration prediction of low flow rate rotameters. Dept. IEC, Fischer & Porter Co., 795 Jacksonville Rd., Hatboro. Pa. 68 Meter Tubes. New 20-page catalog details features and specifications of standard meter tubes. Formerly cus tom items, meter tubes can now be ordered as standardized components of oil- and gas-flow measurement systems direct from the catalog. Dept. IEC, Daniel Orifice Fitting Co., P.O. Box 19097, Houston S4. Tex. 69
GET PRODUCT UNIFORMITY FASTER and at LESS COST . . .with
NETTCO
Engineered
Agitation!
Pressure-Vacuum Controls. Eightpage catalog describes a wide variety of pressure-vacuum controls featuring general purpose, sensitive, extremely sensitive, dual switch differential, ab solute, and explosion-proof units. Dept. IEC, United Electric Controls Co., 79 School St., Watertown, Mass. 70 Radioactivity Monitor. Bulletin N 30 describes monitor which provides continuous visual and audible indica tions of radioactivity level for warning against hazards and for measurements in industrial, clinical, educational, and research applications. Dept. IEC, Nucleonic Corp. of America, 196 Degraw St., Brooklyn, Ν. Υ. 71 Valve Regulators. Functions, appli cations, and operation of valve regu lators are described in a new 8-page, photo-illustrated bulletin. Application: provide high-pressure, large volume, gas regulation with minimum pressure loss. Dept. IEC, Rockwell Mfg. Co., Meter and Valve Division, JftO North Lexington Ave., Pittsburgh 8, Pa. 7 2 Water-Flow Indicator. Bulletin 122 on a new water-flow indicator for a visual check of water-flow rate. Indi cating range is 2 to 10 g.p.m. Dept. IEC, Pako Corp., Minneapolis Ifl, Minn. 73
-ore information is as near as your mailbox!
Just write directly to
the manufacturer
or
use the handy
reply card provided on the Alphabeti cal List of Advertisers page.
INCREASE PRODUCTIVITY, lower power costs, and minimize
maintenance requirements . . . with "process-rated" Model W T agitators by Nettco. Standardized components (motor, drive, shaft, stirrer) can be combined to suit your most exacting size, speed, HP or other process specifications. Check the design features of the Model W T tank top agitator . . . Widely spaced, oversized Timken bearings Fully enclosed — dust, fume, moisture-proof Splash lubrication, drip-proof design Oil-trapped against leakage
• Worm gear reduction drives • Ratios from 3.5:1 to 68:1 • Seven sizes available • Complete range of speeds • Minimum moving parts • Large diameter vertical shaft
Model Τ units, featuring helical gear trains and worm gears in combination, offer ratios from 6.25:1 to 100:1 in numerous "process-rated" models designed for dependable, economical operation. Ask Nettco agitation engineers for recommendations. Request Bulletin 551 and data sheet from New England Tank & Tower Company, 83 Tileston Street, Everett 4 9 , Mass.
Ν Ε TTCO E N G I N E E R E D
A G I T A T I O N
FREE Please send me the following literature: Π Tank Top Agitators—Bulletin S51 Q Portable & Tripod Mixers—Spec. Sheets
LITERATURE D D
Pipeline-Flomix®—Bulletin 531 Side Entering—Bulletin 532
VOL 50, NO. 9
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SEPTEMBER 1958
129 A
