Document 0q04a71g4ko0a8N5rykOnNRkx

Valoes The Smolensky Valve Co., Inc. Cleveland, Ohio Branch Offices Chicago. III., 1307 Security Bldg....................H. T. Sward, Dist. Mgr New York, N. Y., Grand Central Palace. C. A. McMann, Dist. Mgr Philadelphia. Pa.. 509 Franklin Trust Bldg............... H. L. Schwartz Hartford, Conn.............................................................................J-B Engr. Sales Co. San Francisco. Cal.. Rialto Bldg....................Kirk W. Eichelberger SMOLENSKY VALVES FOR EVERY HEATING PURPOSE--EFFICIENT--ECONOMICAL--DURABLE LIST PRICES STANDARD SMOLENSKY REGR1NDINC PACKLESS VALVES Size* (Woodwhee) Type)........................................................................Inche* Finished end Plated All Over....................................................... Each Vf y.* 12.30 2.20 r 3.45 4.50 w 5.90 2* 8.95 y y/s2VC 2>/C 2W 2>/,' Sizes (Cast Iran Wheel)............................... Inches) >/40( %* >/2* S/4" Screwed Ends..................................................Each ill.45j 1.50 1.65 2.04 DimensioRs~-A..............................................Inches! 2%0 2%* 23/8* 2*/2`r r 2.75 2*4* W 3 60 21/,' I'/l'l 2' i'/i 3" 4.90\ 7.20 12.80 18.50 3*1 3 3%' 3*4* ' STANDARD AND EXTRA HEAVY SMOLENSKY NOISELESS CHECK VALVES Stzes(l> lb. pressure) Inches 2" i 2I/2*'I 3*j 4"! 5*1 6" 7" 8* 9* 10*1 12* 14* 16* Flanged........................ Each 125.00129.00,30.00,39.00 65.25\85.95103.97 130.70 moo 230.00\3fO.00 450.00 520.00 Dimensions Face to Face In. 2*4*1 2}/j*i 2Vi" 27/g*i 3*4*1 4l/2* 5'4* 6* V/l" 7'4*| W IO*/2* 1W Sizes (250 lb. pressure).............................................................. Inches i VAm Flanged...................................................... ............................... Each SI6.35 2*1 V/l 3*1 4* 5* 6* 28.25| 31.50 39.80\ 49.00 69.86 I0S.0Q Dimensions, Face to Face..........................................................Inches 2* Z'/,'! 2W Wi 2VS 3V4* W STANDARD SMOLENSKY REGRINDING PACKLESS RADIATOR VALVES Finished, Plated all Over, Screwed Ends.............................................. Each '/i\ J/.'| l' I'/.' W 83.I5\ 3.80 4.00 6.40 8.10 Dimensions--A............................................................................. Inches 3'i 3%'! 3'/,' 3>/,' 4* 2' 13.10 4*4* LIBERAL TRADE DISCOUNTS FROM LIST PRICES 344 Ventilators American Larson Ventilating Co. Main Office: PITTSBURGH, PA. Product: American-Larson Ro tary Suction Ventilators--proven, by competitive tests, to be the most efficient ven tilator on the market. Efficiency: In a recent (Jan uary, 1923) test conducted by a disinterested party, more than 50 makes of ventilators were tested over a wide range of wind velocities and temperature differences with the result that the American-Larson Ventilator was shown to have the highest rating. Here are the reasons: The American-Larson Ventilator offers less re sistance to the passage of air than any other ven tilator, be it of the stationary or of the rotary type. The patented ejector tube effects air movement in direct ratio to wind velocities and temperature differences. Most ventilators do not function at all in wind only (no temperature difference) velocities below 3H niiles per hour; furthermore, under tem perature differences as great as 20 deg. fahr., the efficiency of these ventilators actually decreases in gentle breeze up to 4 or 5 miles per hour velocity. EFFICIENCY TEST OF A16* AMERICAN-LARSON SUCTION VENTTIATOR HXsnmra* AC-jAmAPran ________________ The official report of the Institute says, in part: "The comparison shows that the American- Larson is far superior to both types at all wind velocities. At very low velocities of wind, it still ventilates while the other types do not move any air. Simi larly. the American-Larson Ventilator utilizes wind to increase the effect of temperature differences, while in the other types 'a gentle breeze actually dimin ished the ventilating effect." Number and Size of Ventilators Required The air supply per person and per hour, or the number of reversals of air contents per hour may be taken from the following table: Type of Room to be-Ventilated Number of Renewals of Air Contents per Hour 2 to 3 4 5 to 8 5 to 8 5 to 8 5 to 10 8 to 12 8 to 12 10 to 12 IS to 20 10 to 12 5 to 6 Further proof of the efficiency of AmericanLarson Ventilators is furnished by a comparative test conducted by Professor Trinks of the Carnegie Institute of Technology of Pittsburgh, in 1921. The results are shown below: To obtain effective, uniform ventilation and avoid local drafts, ventilators should be placed not more than 30 ft. apart; 20 ft. is a good average. It is best to locate them at the ridge unless the building exceeds 40 ft. in width, when two rows of smaller ventilators may be used. Where the build ing is surrounded by higher buildings, it is desirable to extend ventilators above them by mounting on stacks. Example Showing Method of Calculation-- In a building 100 ft. long. 35 ft. wide and 28 ft. average height the air is to be renewed 5 times per hour. How many and what size ventilators are required? With a spacing of ventilators 20 ft. apart and 10 ft. from the ends, in one row along the ridge. 5 ventilators are required, (100 x 35 x 28 ft.) X 5 changes hr. ^ gg ^ cu ft 5 ventilators per hour to be exhausted by each ventilator. From the table of capacities of American-Larson ven tilators under average wind and temperature con ditions, the nearest size is 24-in. size. Requirements: Five 24-in. ventilators. For specified conditions of height, temperature and wind, the capacity of the American-Larson ventilator is: SSM Haro-------------- A' = 18" Stationary Siphon Ventilator. y = 18" Rotary Siphon Ventilator. Z=1H" American-Larson Suction Ventilator. Q = 4j-36/W2^+20Xv]; - where Q is cu. ft. of air exhausted per hour, through a ventilator liaving the throat area of A sq. in., mounted on a roof at a height of H ft. from the center of the ventilator outlet to the floor, and with a wind velocity of v miles per hour, and average temperatures /' inside, and / outside the building. The above is based on sufficient area of openings in the sides of the building for inlet of fresh air. 345