Document NEYnvyQ79g9JqB8nQ3y9rybDp

290 Air System Equipment ' WATERLOO REGISTER COMPANY, INC. "Since 1902" P. O. Box 72 Waterloo, Iowa WATERLOO offers a complete line of Air Diffusion Equipment designed particularly for commercial and industrial heating, ventilating and air conditioning Air System Equipment . 291 Representatives in Principal Cities of United States and Canada Specialists in Low Loss Components For High Velocity Systems Manufacturers of Prefabri cated Metal Spiral "Lockseam" Pipe and Matched Fit tings; Die-Stamped, Two-Piece "Laminar-Flo" 45 and 90 Degree Elbows; Sound Absorbers--For High Velocity Systems. rspiral pipe division 4*nlied W cou SPIRAL "LOCKSEAM" DUCT-For High Velocity Systems EXTREME RIGIDITY PERMITS INSTALLATION OF LONG LENGTHS WITHOUT BUCKLING. _ __ AS FEW AS 9 JOINTS PER 100 FT. 2V Supply Grille Two seta of extruded aluminum louvers, each indi vidually adjustable for four-way deflection at degree desired. 3H Return Air Grille Fixed fins at 45 degrees of 0 degree deflection, in. heavy gage frame, strengthened with adequately spaced support bars. IVMH Supply Register One set of adjustable louvers for easy control of air, right or left, with multi-shutter damper, horizontal blades. Ideally suited for residential installations be cause of narrow stack depth. DV Door Ventilator Inverted V-Shaped fins are permanently affixed to channel frame providing rigidity and complete sight proofing. Provides 72 percent free area. Available flange both sides, one side or channel frame only. OB Damper Opposed Blade Volume Controller may be purchased as a separate unit or can be incorporated as integral part of all Waterloo grilles. DUCTROL Air Volume Extractor Volume controller and extractor adjusts from full open to full closed, to provide even distribution to entire grille surface. Completely assembled at the factory-- ready to install on job. Airline Grille This product of all extruded aluminum construction features solid K in- face bars on K hi. spacing. Available with or without dampers. Ideally suited for wall, sill or floor applications. The complete Waterloo catalog is available upon request containing illustrations and engineering data on all products. Cross-section of United's Spiral Pipe four-ply Lockseam-- flowing smooth in terior Junction. ADVANTAGES OF SPIRAL "LOCKSEAM" DUCT OVER CONVENTIONAL SQUARE, RECTANGULAR OR ROUND GALVANIZED DUCT LIGHTER WEIGHT: United's Spiral "Lockseam" Pipe is 20 percent lighter than conventional, galvanized round duct of equal strength; can be two gages lighter and still retain equal strength properties. GREATER STRENGTH: Spiral construction, with United's Lockseam feature, imparts extreme riinditv which permits the installation of long lengths without buckling or sagging. ` READY TO INSTALL: United Spiral Pipe is delivered ready to assemble into the system. Fittines are factory-engineered to eliminate iob-site measuring, calculation, or modification. EASY STORAGE: United Srpiral Pip. e can be stored wit--h---l-i-t-thleazhaardzaif delays prevent immediate installa- tion. It need hot be kept ler cover. If storage space is available, the entire order for a large building may be placed at once. EASIER TO SEAL: United Spiral round pi e is easier to seal at joints. . CUSTOM LENGTHS: Spiral "Lockseam^' *ipe can be furnished in any specified length up to 20 ft. 12 ft lengths arc standard. - KNOWN COSTS--KNOWN QUANTITY SOUND ABSORBERS--FOR HIGH VELOCITY SYSTEMS Construction Specifications ACOUSTIC^*ANEL: 19 gage ^Jvanixed H in- Protective Cloth fireproof tha cloth Absorbing Lining fireproof rUsa fiber absorb ACTUAL DB ATTENUATION PER FOOT. UNITED SOUND ABSORBERS ing media compressed to 3 io. thickness Duct Dis. 2 Frequency. Octave Bands 4 67 CASING: 24 gsge spiral pipe up to 23 in. OD. V T r 9* IO* 11' 3.83 3 29 5.86 6.00 e7..0o5s 7.15 6.15 6.77 5.73 5.67 4.87 2.88 4.37 6.30 4.38 6.00 4.25 IN 3.89 4.70 4.78 4.45 2.30 3.60 4.23 4.20 4.00 3.40 2 09 3.18 3.8$ 3.91 2.64 3.09 20 gage longitudinal seam 23ia. to 36 in. OD. 18 gage longitudinal seam 37 in. to SO in. OD. 18 gage teaaitudi&al seam 61 tn. and over 12* 14' 18' 18* Vf r? 1.92 2.92 3.63 3.56 3.33 1.64 2.50 3.03 3.07 3.36 1.44 2.19 3.66 3.69 3.60 1.2S 1.96 2.35 2.39 3.22 1 IS 1.75 2.11 2.16 2.00 1.70 1.04 1.59 1.92 1.96 1.82 1.65 .96 1.46 1.77 1.79 1.67 United Sound Absorbers Have These Specific Advantages For High Velocity Systems: 1. Installation Flexibility 2. No Sound Regeneration 3. Minimum Static Piemure 2y .88 1.35 1.63 1.65 1.64 28* .82 1.25 1.51 1.53 1.43 .76 1.17 1.41 1.43 1.33 4. Attenuation Baaed on Actual Tests 32* .71 1.09 1.32 1.34 1.25 .68 1.03 1.24 1.26 1.18 1.00 .64 .975 1-16 1.19 1.11 .60 .92 1.11 1.13 1.05 40* 67 .87 1.06 1.07 1.00 .85 .64 .83 1.01 1.03 .95 .81 MATCHED LOW LOSS FITTINGS 20 gage galvanized steel. Inspection and quality control of weld by Magnaflux equipment. Nine-step factory production con trol of size tolerance. Corrosion resistant continuous weld. Available for every diameter of spiral pipe. CONICAL AND ANGULAR TAKE-OFFS AS T OF I960 ASHRAE GUIDE IN--D---E---D, "PAGE 306 For Complete Specifications. Capacity Rat ings, Installation Instructions, write to United Sheet Metal Company. Inc., 540 S. Dresd A*e., Columbus. O.. for Engineering Data Catalog duct.